Exhibit A EXHIBIT A

NorthWestern Corporation Case No. 03-12872 (CGC)

CUSTOMIZED EXHIBIT FOR NOTICE OF MOTION TO ASSUME EXECUTORY CONTRACTS

«Name» «Address_1» «Address_2» «Address_3» «City» «State» «Zip» «Country»

Description of Contract Estimated Cure Amount Contract Number «Description» «Cure» «Contract»

Pursuant to the Motion to Assume Executory Contract, the contract listed above is being assumed. If you wish to view the entire exhibit, you can obtain copies at www.kccllc.net/northwestern or by calling Kurtzman Carson Consultants LLC at (866) 381-9100.

Exhibit B Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country 10K Wizard 1950 Stemmons Freeway, Suite 7016 Dallas TX 75207 10K Wizard 1950 Stemmons Freeway, Suite 7016 Dallas TX 75207 1st Dakota National Bank 225 Cedar Street Yankton SD 57078-4333

3 Rivers North Telephone Directory Attn: Sheldon Ivesdal Northwinds Publishing P.O. Box 2367 Great Falls MT 59403 3 Rivers Telephone Cooperative P.O. Box 128 Fairfield MT 59436 3C Electric Cyde Harold Crews 310 East Railway Cut Bank MT 59427 4 Seasons Lot Service 250 5th Ln NE Fairfield MT 59436 4G Plumbing & Heating P.O. Box 3538 Missoula MT 59801 A Core Of Idaho LLC d/b/a A Core Of Missoula Inc. P.O. Box 2559 Idaho Falls ID 83403-2559 A&M Fire And Safety Inc. Chris Larue 739 Utah Butte MT 59701 A&S Metals Ed Wilcox P.O. Box 3772 Butte MT 59701-6800 A.E.Ostermeir Route 1 Box 229 Grand Island NE 68801 A.I. Credit Corp. C/O Lockton Insurance Agency 444 W 4th St, Suite 900 Kansas City MO 64112-1906 A-1 Janitorial 412 N Foster Mitchell SD 57301 A-1 Janitorial 412 N Foster Mitchell SD 57301

Abb, Inc. Patrick Corrigan P.O. Box 9005 Littleton CO 80160-9005

Abb, Inc. Patrick Corrigan P.O. Box 9005 Littleton CO 80160-9005 Aberdeen American News 124 S 2nd St Aberdeen SD 57401 Aberdeen Catholic School 505 SE 3rd Ave Aberdeen SD 57401 Aberdeen Catholic School 1400 N. Dakota St. Aberdeen SD 57401-4414

Aberdeen Chrysler Center Attn: Mike Mikula 901 Auto Plaza Drive Aberdeen SD 57401

Aberdeen Development Corporation Attn: Jim Barringer Banner Shedahl Building P.O. Box 1179 Aberdeen SD 57402-1179

Aberdeen Housing Authority Homestead Attn: Mrs. Juletta M. Smith 2222 3rd Avenue Southeast Aberdeen SD 57401 Aberdeen Living Center 1700 N. Hwy 281 Aberdeen SD 57401 Aberdeen Motors Inc. 901 Auto Plaza Drive Aberdeen SD 57401

Director Of Buildings And Aberdeen Public Schools Attn: Scott Sikkink Grounds 225 SE 3rd Avenue Aberdeen SD 57401 Aberdeen School District May Overby School Attn: Business Manger P.O. Box 4203 Aberdeen SD 57402-4203 Aberdeen School District 6-1 For Holgate Jr High C O Business Manager 203 3rd Ave SE Aberdeen SD 57401 Aberdeen School District 6-1 Attn: Dan Hoke Superintendent Henry Neill Elementary 225 Third Ave Southeast Aberdeen SD 57401 Aberdeen School District 6-1 Henry Neill Elementary 1215 6th Ave SE Aberdeen SD 57401 Aberdeen School District 6-1 C O Business Manager 203 3rd Ave SE Aberdeen SD 57401 Aberdeen School District 6-1 C O Business Manager 203 3rd Ave SE Aberdeen SD 57401 Aberdeen School District 6-1 Howard Hedger School P.O. Box 4203 Aberdeen SD 57402 Aberdeen School District 6-1 Simmona Jr High School Attn: Business Manger 203 3rd Ave SE Aberdeen SD 57402-4203

Accurint Michael Saraceno 6601 Park Of Commerce Boca Raton FL 33487

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 1 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

Ace Electric Inc. Dwight Fischer 808 West Main Laurel MT 59044

Ace-Usa Ace Bond Services Insurance Company Of North America Pacific Employers Insurance Company Westchester Fire Insurance Company Indemnity Insurance Company Of North America C/O Ace Bond Services Tl33B 1601 Chestnut Street Philadelphia PA 19103 Adic (On Site Support) Bruce Jones 8560 Upland Dr Englewood CO 80112 Adjustment Training Center 607 N 4th St Aberdeen SD 57401-2733 Advanced Enterprise Technologies 4722 Campbells Run Road P.O. Box 44145 Pittsburgh PA 15205-0345 Advanced Silicon Materials Inc. Kathy Griffith 119240 Rick Jones Way Butte MT 59750 Advanced Silicon Materials Incorporated 119140 Rick Jones Way Silver Bow MT 59750

Advanced Silicon Materials LLC Attn: Plant Manager 119140 Rick Jones Way Silver Bow MT 59750 Advanced Silicon Materials LLC Ken Smith 3322 Road N N. E. Moses Lake WA 98837 Advanced Silicon Materials LLC 119140 Rick Jones Way Butte MT 59702-3466 Afco Premium Credit LLC 1 South 4443 Summit Ave Suite 304 A Marsh Usa Inc. Oakbrook Terrace IL 60181 A Joint Venture Of AFCO Credit Corp 1 South 443 Summit Ave Suite AFCO Premium Credit LLC And Marsh Usa Inc. 304A Oakbrook Terrace IL 60181 Afton Fevero Johnson P.O. Box 1476 Red Lodge MT 59068

Agreement Limiting Liability Among Western Interconnected Systems, Western Electricity Coordinating Council, Bob Dintleman, and the University of Utah 540 Arapeen Drive, Suite 210 Salt Lake City UT 84108-1288 AI Credit Corp 1401 1401 Branding Ln Ste 230 Downers Grove IL 60515 Al Harmata 5825 S 19th Bozeman MT 59715 Alan Renner Nancy Renner 107 North Main Street Chamberlain SD 57325 Albert & George Sass 3821 E. Seedling Mile Rd. Grand Island NE 68801-8418

Alberta One-Call Corporation Tammy Meyer 230-6940 Fisher Rd SE Calgary AB T2H0W3 Canada Alberton High School P.O. Box 330 Alberton MT 59820

Alfalfa Feeds Inc. NW Prairie Ave Desmet SD 57231 Alfred Watland RR2 Box 144 Castlewood SD 57223 Algona Municipal Utilities 104 West Call St. P.O. Box 10 Algona IA 50511

Allegiance Aaron Bay 2806 Garfield Missoula MT 59801 Allen Kannas RR 2 Box 147 Castlewood SD 57223-9551

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 2 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

Alme Construction Inc. Henry Alme P.O. Box 1327 Cut Bank MT 59427 Alpine Floral Inc. P.O. Box 783 Lewistown MT 59457-0783

Alstom-Esca Deborah Mulvihill Or Rosie Maas 11120 NE 33rd Place Bellevue WA 98004

Alternative Technologies Inc. Tom Becker 12350 River Ridge Blvd Burnsville MN 55337 Amalia M. Columbus P.O. Box 27 Red Lodge MT 59068 Aman Collections P.O. Box 730 Aberdeen SD 57402-0730 American Airlines Corporate Headquarters Bob S Schadt 4255 Amon Carter Blvd Md 4403 Fort Worth TX 76155 American Assurance 2000, L.P. P.O. Box 41027 Houston TX 77241-1027

American Century Ms Peg Vanwagoner 4500 Main St P.O. Box 418210 Kansas City Mo 64111-7709

American Drilling And Supply Inc. Curtis Schelle 1520 East Lane Billings MT 59101

American Fidelity Assurance Company 2000 N. Classen Boulevard Oklahoma City OK 73106 American Home Assurance Company 70 Pine Street New York NY 10270 American Legion Of North Platte, NE P.O. Box 662 North Platte NE 69103-0662

American Meter Glenn Carlson 1350 Bayshore Highway #200 Burlingame CA 94010 American Nat'L Bank & Trust Of New Jersey & Carolyn M. Bryam, Trust. Gail F. Moulton Montclair NJ 07032 American Public Land Exchange Inc. 125 Bank St Ste 610 Missoula MT 59802

Anaconda Civilian Conservation Center Jim Johnston Deer Lodge National Forest 1407 Foster Creek Rd Anaconda MT 59711 Anderson Ford P. O. Box 640 Grand Island NE 68802-0640 Ann M. Westermark 3815 4th Avenue South Great Falls MT 59401 Anna K. Holmberg c/o Northwestern Energy 40 East Broadway Street Butte MT 59701 Anna K. Holmberg c/o Northwestern Energy 40 East Broadway Street Butte MT 59701 Aquila Energy Marketing Corporation 10750 East 350 Highway P.O. Box 11739 Kansas City MO 64138 Aquila Power Corporation 2533 North 117th Avenue Omaha NE 68164 Arc Electric Inc. P.O. Box 4094 Butte MT 59701 Arctco, Inc. 701 SE 12th Madison SD 567042 Arctic Cat 701 SE 12th Madison SD 567042

Ari Fleet Lt Dan Willard 9000 Midatlantic Dr P.O. Box 5039 Mount Laurel NJ 08054

Arizona Public Service Manager Resource Operations P.O. Box 53999, M/S 9842 Phoenix AZ 85072-3999 Ark Asset Management Joseph Scanlon Jr 125 Broad St New York NY 10004

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 3 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

Ark/Lehman Joe Scanlon 125 Broad St New York NY 10004 Arlington Farmers Elevator Co 105 N Main Arlington SD 57212 Arlington Schools 306 South Main Arlington SD 57212-2074 Armour Cable TV Jack Schaefer P.O. Box 57 Mitchell SD 57301 Arnold E. Whitcomb P.O. Box 1508 Red Lodge MT 59068 Asarco Blaine Cox East Helena Helena MT 59635 Ascom Hasler Leasing 100 Corporate North Bannockburn IL 60015-1279

Ash Grove Cement West, Inc. Plant Manager 100 Montana Highway 518 Clancy MT 59634-9701

Aspen Consulting & Engineering Inc. Mark Peterson P.O. Box 4822 Helena MT 59604-4822 Asphalt Paving & Materials Company RR 3 Box 94 Huron SD 57350 Asplundh Tree Expert Company 7524 NE 175th Street P.O. Box 3110 Wilsonville OR 97070 Associated Construction Engineering Attn: Tim Coleman 12 North Broadway 2Nd Fl Belgrade MT 59714 At Klemens & Son 814 12th St North Great Falls MT 59401-1217 August Gabrian P.O. Box 1166 Red Lodge MT 59068 August Peterson RR 2 Box 429 Milbank SD 57252-9314 Aurora Co-Op Elevator P.O. Box 209 Aurora NE 68818

Automated Maintenance Systems Inc. P.O. Box 7768 Rapid City SD 57709

Avalanche Corporation Fred Des Rosier P.O. Box 2697 Browning MT 59417

Avesis Steve Ellingboe 317 6th Ave Suite 1040 Des Moines IA 50309-4113 Avista Corporation P.O. Box 3727 Spokane WA 99220 Avista Corporation 1411 East Mission Avenue P.O. Box 3727 Spokane WA 99220-3727 201 W. North River Drive, Avista Energy, Inc. Electric Accounting Suite 610, Spokane WA 99201 Avista Fiber, Inc. West 201 N River Dr Suite 450 Spokane WA 99201 B & F Excavating Co Inc. P.O. Box 428 Columbia Falls MT 59912-0421 B & L Pumping P.O. Box 302 Browning MT 59417 B and H Publishing 810 8th St. Springfield SD 57062-0444 B C Hearing LLC Lisa Pesanti 700 Dewey Butte MT 59701

Badger Directional Drilling Inc. David Scott Or Douglas Wells 185 Bachelor Grade Rd Kalispell MT 59901

Balko, Inc. P.O. Box 910 Conrad MT 59425 Bank Of Marica NT&SA Commercial Card Services 777 108th Ave NE Ste 510 Bellevue WA 98004 Banner 715 N Brown Co 19 Aberdeen SD 57401-3337 Barclays Bank LLC 1111 Brickell Ave. Miami FL 33131

Barretts Minerals Inc. Ted Stosich 8625 MT Hwy 91 South Dillon MT 59725

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 4 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

Barrow, Hanley, Mewhinney And Strauss, Inc. Michael Lubin 3232 Mckinney Ave 15th Fl Dallas TX 75204-2429 Barry Lazarus Moss & Barnett 4800 Norwest Center 90 South Seventh Street Minneapolis MN 55402 Basec.Net 76 Third St. SW Huron SD 57350 Basin Creek Equity Partners, LLC Attn: President 220 North Alaska Butte MT 59701 Basin Electric Cooperative 1717 E. Interstate Ave Bismarck ND 58503-0564 Basin Electric Cooperative 1717 E. Interstate Ave Bismarck ND 58503-0564 Basin Electric Cooperative 1717 E. Interstate Ave Bismarck ND 58503-0564

Basin Electric Cooperative, Manager Marketing And Power Supply Planning 1717 E. Interstate Ave. Bismarck ND 58503-0564 Batavia Services Inc. 2500 Bayport Blvd Seabrook TX 77586

Bayview Technology Group LLC Bob Scammell 2601 Blake St Suite 302 Denver CO 80205 Beadle Electric Co-Op Hwy 14 East Huron SD 57350 Beadle Electric Cooperative Inc. P.O. Box 38 Huron SD 57350 Bearpaw Gathering Systems, Inc. C/O Kalabuzuba Debbie Lisby 930 W. 1st St. Fort Worth TX 76102 Beartooth Electric Cooperative Mr. Robert Walker Manager P.O. Box 1110 Red Lodge MT 59068 Beartooth Electric Cooperative, Manager P.O. Box 1110 1306 N. Broadway Red Lodge MT 59068-1110 Beatrice Gullard 2900 W. Macdonald Dr. Billings MT 59101

Beaverhead Electronics Harvey Lake 365 North Parkview Court Dillon MT 59725 Bechtel Power Corporation 50 Beale St. San Francisco CA 94105 Belgrade Urgent Care R.N. English 403 W Main St Belgrade MT 59714 Bell Lumber Todd Brown P.O. Box 748 Conway WA 98238 Benefits Health Care 1101 26th St South Great Falls MT 59405 Berkeley Read Lewis Trust Berkeley R Lewis III TTEE P.O. Box 72 North Branch MN 55056 Berndts Landscaping & Lawn Care 101 E Broadway Missoula MT 59801 Best Moritz And Sons 116 S. Smith St. Clark SD 57225-1627 Bethel Luthern Home 1001 S. Egan Ave Madison SD 57042-3336 Bethesda Home 1224 S High St Aberdeen SD 57401-7724 Bethlehem Lutheran Church 1629 Milwaukee Ave Se Aberdeen SD 57402-0937 Betty Lou Harmacek P. O. Box 232 Avon SD 57315 Beverly Enterprises d/b/a Colonial Manor RR 2 Box 480 Groton SD 57445-9802 Beverly Healthcare 1015 3rd St Facility Redfield SD 57469-1499 Bhce P.O. Box 410 Hardin MT 59034-0410

6554 S. McCarran Blvd., Suite Bidart And Ross, Inc. James Ross President / Annette Bidart A 10391 Double R Blvd Reno Nv 89509 Big Flat Electric, Inc. P.O. Box 229 Malta MT 59538

Big Horn County Electric Coop. Inc. Manager P.O. Box 410 Hardin MT 59034-0410

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 5 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

Big Sky State Games Karen Gahl P.O. Box 7136 Billings MT 59103-7136 Big Z, Inc., Robert Zimmerman, 1400 Poly Dr., Suite 10E Billings MT 59102 Bill Baltrusch Construction Inc. P.O. Box 111 Havre MT 59501 Bill Field Trucking LLC P.O. Box 418 Anaconda MT 59711 Bill Healy RR2 Box 29 Montrose SD 57048 Bill Herbolich d/b/a P.O. Box 343 Whitehall MT 59759

Bill Markovich Construction Inc. 2827 Lexington Butte MT 59701 Bill Parnell d/b/a Mall Services P.O. Box 3674 Butte MT 59702-3674 Bill Thomas d/b/a Thomas Built Up Roofing 2931 Quincy Butte MT 59701

Billings Construction Supply Inc. Patrick Jewison P.O. Box 80701 Billings MT 59108

Billings Flying Service Inc. 6309 Jellison Billings MT 59101 Billserv, Inc. 211 North Loop 1604 East Suite 100 Attn: Marshall Millard San Antonio TX 78232

Bindview Development Corporation 5151 San Felipe 25th Floor Houston TX 77056

Bison Building Systems d/b/a Bison Concrete Cutting Stephen Smith P.O. Box 325 Somers MT 59932

Bison Engineering Inc. Hal Robbins 30 South Ewing Helena MT 59601

Blackfoot Telephone Cooperative 1112 N Russell St Missoula MT 59801 Blahnik Construction Inc. 759 Highway 93 North Hamilton MT 59701 Blankenship Construction Inc. Bea Blankenship P.O. Box 460 Butte MT 59703 Blue Cross Blue Shield Of Montana Mary Kay Puckett 560 N. Park Avenue P.O. Box 4309 Helena MT 59604 Blue Dot Services, Inc. Gary G Drook 125 S. Dakota Ave. Sioux Falls SD 57104 Board Of County Commissioners Of Granite County 220 N. Sansom St. Philipsburg MT 59858 Board Of County Commissioners Of Grant County, SD 210 E. 5th Ave. Milbank SD 57252 Board Of County Commissioners Of Hamlin County, SD P. O. Box 237 Hayti SD 57241-0237 Board Of County Commissioners Of Mineral County 300 River St. Superior MT 59872

Bob D. Miller d/b/a Rain Jet Of Montana 8120 Double Tree Ln Missoula MT 59801 Bob Jones Construction 1239 27th St., N.W. Huron SD 57350-5029 Bob Krausz d/b/a Snowy Mountain Lock & Door P.O. Box 3586 Lewistown MT 59457

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 6 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Bob Merrill RR1 Box 2 Parker SD 57053 Bob Webster 2850 Blacktail Loop Rd Butte MT 59701 Bobby And Ty Vinson d/b/a Vinson Custom Cutting 3500 14th Ave South Great Falls MT 59405

Bon Homme-Yankton Electric Association Inc P.O. Box 158 Tabor SD 57063 Bonanza Of Aberdeen Attn: Mr. Bruce Lieberg 1010 SE 6Th Ave Aberdeen SD 57401-6321

Bonneville Environmental Foundation Angus Duncan 133 SW Front Ave Suite 410 Portland Or 97204

Bonneville Power Attn: Brian Altman 7600 NE 41st St., Suite 201 P.O. Box 61409 Vancouver WA 61409

Bonneville Power Attn: Brian Altman 7600 NE 41st St., Suite 201 P.O. Box 61409 Vancouver WA 61409 Attn: Transmission Account Executive for NorthWestern Bonneville Power Administration Energy LLC - TM/Ditt2 P.O. Box 491 Vancouver WA 98666-0491

Bonneville Power Administration Brian Altman 7600 NE 41st St., Suite 201, P.O. Box 61409 Vancouver WA 61409

Bonneville Power Administration Brian Altman 7600 NE 41st St., Suite 201, P.O. Box 61409 Vancouver WA 61409

Bonneville Power Administration Brian Altman 7600 NE 41st St., Suite 201, P.O. Box 61409 Vancouver WA 61409

Bonneville Power Administration Brian Altman 7600 NE 41st St., Suite 201, P.O. Box 61409 Vancouver WA 61409

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 7 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

Bonneville Power Administration Brian Altman 7600 NE 41St St., Suite 201, P.O. Box 61409 Vancouver Wa 61409

Bonneville Power Administration Brian Altman 7600 NE 41st St., Suite 201, P.O. Box 61409 Vancouver WA 61409

Bonneville Power Administration Brian Altman 7600 NE 41st St., Suite 201, P.O. Box 61409 Vancouver WA 61409

Bonneville Power Administration Brian Altman 7600 NE 41st St., Suite 201, P.O. Box 61409 Vancouver WA 61409

Bonneville Power Administration Brian Altman 7600 NE 41st St., Suite 201, P.O. Box 61409 Vancouver WA 61409

Bonneville Power Administration Brian Altman 7600 NE 41st St., Suite 201, P.O. Box 61409 Vancouver WA 61409

Bonneville Power Administration Brian Altman 7600 Ne 41st St., Suite 201, P.O. Box 61409 Vancouver WA 61409

Bonneville Power Administration Brian Altman 7600 NE 41st St., Suite 201, P.O. Box 61409 Vancouver WA 61409

Bonneville Power Administration Brian Altman 7600 NE 41st St., Suite 201, P.O. Box 61409 Vancouver WA 61409

Bonneville Power Administration Brian Altman 7600 NE 41st St., Suite 201, P.O. Box 61409 Vancouver WA 61409

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 8 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

Bonneville Power Administration Attn: Larry Kitchen 905 NE 11th Ave P.O. Box 3621 Portland OR 97208 Bonneville Power Administration Attn: Larry Kitchen 905 NE 11th Ave P.O. Box 3621 Portland OR 97208 Bonnie Aguilar P. O. Box 99 Grand Island NE 68802 Bonnie L. Donnelly d/b/a Interior Plant Designs P.O. Box 4047 Butte MT 59701 Border States Electric Chad Lowe 1401 N. Minnesota Ave. Sioux Falls SD 57102 Boston Safe Deposit And Trust Company Tom O'Connor 135 Santilli Hwy Everett MA 02149-1950 Boulder Hydro Mr Lee Tavenner 400 West Franklin Missoula MT 59801

Boyne Usa Inc. Ted Dansen One Lone Mountain Trail Big Sky MT 59716 Bozeman Daily Chronicle P.O. Box 1190 Bozeman MT 59771 Bozeman High School 205 North 11th Bozeman MT 59715 Bozeman Plumbing And Heating P.O. Box 4270 Bozeman MT 59771 Bozeman Urgent Care J. Michael Wise 1006 West Main Bozeman MT 59715 Attn: Mr. Gary Weihrauch (4211 South BP Canada Energy Company Ltd. 143rd Circle; Omaha, NE 68137-4505) 240 - 4th Avenue., S.W. Calgary Alberta T2P 2Hb Canada Bradley And Susanne Knutson P.O. Box 248, Menno SD 57045 Bradley O. Knutson P. O. Box 248 Menno SD 57045

Brandywine Asset Management Bradley Meeker 3 Christina Centre Suite 1200 201 N Walnut St Wilmington DE 19801 Bresnan Communications Robert Bresnan 1 Manhattanville Rd Purchase NY 10577 Bresnan Communications, LLC 777 Westchester Ave White Plains NY 10604 Bridgeband Communications, Inc. 514 S 23rd Ave Bozeman MT 59718 Bridger Cable TV Randy Novakovich P.O. Box 561 Bridger MT 59014 Broin And Associates 2209 East 57Th Street North Sioux Falls SD 57104-7104 Broin Enterprises Inc. P.O. Box 330 Scotland SD 57059-0330 Brookings Holiday Inn 2500 6th Street Brokkings SD 57006-2406 Brookings Hospital 300-22 ND Avenue Brookings SD 57004-2474 Brookings Public School - Middle School 601 4th St Brookings SD 57006

Attn: Dennis Feickert Chairman Brown Brown County Court House County Commission 100 SE First Ave Aberdeen SD 57401 Brown County Highway Department 3133 Ne 8Th Ave Aberdeen SD 57401 Bruce Bergman 1917 Idaho Ave, S.E. Grand Island NE 57350 Budget Rent A Car Corporation 4225 Naperville Rd Lisle IL 60532 Burger King #2463 1825 6th St Brookings SD 57006-1606 Burlinton Northern Rail Road 80 44th Ave NE Friley MN 55421 Burlinton Northern Rail Road IPC Resbu 44743 P.O. Box 7777 Havre MT 59501-7777 Burnison Inc. 42 2nd St., S.E. Huron SD 57350 Buseman, Joe RR 1 Box 100 Canistota SD 57012-9999 Buseman, Lawrence RR 1 Box 97 Canistota SD 57012-9999 Buseman, Leland RR 1 Box 93 Canistota SD 57012-9999 Buseman, Ray RR 1 Box 100 Canistota SD 57012-9999 Butler Machinery Company 4950 E Hwy 12 Aberdeen SD 57401 Butte Aviation Inc 4602 Harrison Ave. Butte MT 59701

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 9 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Butte Machinists Local Union No. 88 Virginia "Ginger" Winston Business District Lodge No. 86 Representative 156 W Granite St. Butte MT 59701 Butte Silver Bow County, Judy Jacobsen 155 W. Granite St. Parking Commission Butte MT 59701

Butte Silver Bow Parking Commission Bob Sullivan 55 W. Granite Butte MT 59701 Butte Tin Shop Inc. Cindy Donaldson 28 East Galena Butte MT 59701

C Brewer Inc. Duane Brewer P.O. Box 294 Roundup MT 59072-0294

C&H Engineering And Surveying Inc. Per Hjalmarsson 2415 West Main St. Ste 1 205 Edelweiss Dr. Bozeman MT 59718 Caballo Rojo Inc. 505 S. Gillette Avenue Caller Box 3009 Gillette WY 82717

Cable And Communication Corporation P.O. Box 280 Circle MT 59215 Cable Montana, LLC A Subsidiary Of Usa Companies, LLC 2605 Second Ave. Suite A P.O. Box 1057 Keaney NE 68848-1057 Cable TV Associates, Inc. Mr. Terry Thomas Box 111 Redfield SD 57469

Calpin Energy Services, L.P. 700 Louisiana Suite 2700 Houston TX 77002 Candace Mckee Ashum P.O. Box 421 Far Hills NJ 07931 Canistota Good Samaritan Ct. P.O. Box 6 Canistota SD 57012-0006 Canistota Public School Box 8 Canistota SD 57012 Canyon Consulting Services LLC 3015 Nettie St. Butte MT 59701

Capital Fence Ronald Bauer P.O. Box 5296 Helena MT 59604

Capri, Inc John O'Connell 516 Fuller Avenue Helena MT 59601

Capri, Inc., Jim O'Connell 516 Fuller Ave. Helena MT 59601 Carewise, Inc. 701 Fifth Ave 26th Floor Seattle WA 98104 Cargill Inc. P.O. Box 308 Scotland SD 57059-0308 Cargill Inc. 2 Dryer 1610 6th Ave SW Aberdeen SD 57401

Cargill-Alliant, LLC Assistant Vice President 6000 Clearwater Drive Minnetonka MN 55343-9497 Carisch Helicopters Inc. 897 Cobb Hill Rd Bozeman MT 59718 Carol Ann Sanford 2415 Highland Blvd. Bozeman MT 59715 Cascade Electric Company Inc. Ron Cockrell P.O. Box 2909 Great Falls MT 59403 Cascade High School P.O. Box 307 Cascade MT 59421

Cashman Nursery 2055 Spring Hill Rd. Bozeman MT 59718 Cass Clay Creamery A. G. Gus Wack 416 4th Ave., S.W. Aberdeen SD 57401 Casso Corporation Robert W. Eastman, President Casso 1330 N Washington St Spokane WA 99201

Castelle 3255-3 Scott Blvd Santa Clara CA 95054

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 10 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Castlewood Public School 28-1 P.O. Box 98 Castlewood SD 57223-0098 Caterpillar Financial Services Corporation 2120 West End Ave. Nashville TN 37203-0001 Catherine Hudak 6649 Thunder Head Ln. Placerville CA 95667-9761 Catlin, Ronald 321 N. Taylor Pierre SD 57501 Cegelec Esca Corporation 11120 NE 33rd Pl. Bellevue MT 98004 Cellco Partnership D/B/A Verizon Wireless 180 Washington Valley Road Bedminster NJ 07921

Manager, Natural Gas And Electricity Cenex Harvest States Cooperatives Supply 216-16th Street Mall, Suite 950 Denver CO 80202/5123

Centennial Concrete Inc. Marty Saluso 701 Centennial Avenue Butte MT 59701

North Webb Rd. and 13th Center Ridge Company Conestoga Mall Management Street Grand Island NE 68801 Central Air Service Inc. P.O. Box 895 Lewistown MT 59457 Central Cleaning And Restoration 1110 Central Ave Great Falls MT 59401 Central Community College 3134 West Highway 34 Grand Island NE 68801

Central Copters Inc. P.O. Box 7300 Bozeman MT 59771 Central Electric Incorporated 201 6th St. West P.O. Box 872 Lewistown MT 59457 Central Logistics 3636 W. Stolley Park Rd Grand Island NE 68901-6712

Central Montana Communications 2121 Hwy 2 NW Havre MT 59501

Central Montana Communications, Inc. P.O. Box 751 Havre MT 59501 Central Montana Electric Power Cooperative P.O. Box 410 Hardin MT 59034-0410 Central Solutions Inc. 1522 River Drive North Great Falls MT 59405 Cera 55 Cambridge Parkway Cambridge MA 02142 Ceridian Corporation PSD Dept. Attn: Vice President 9399 W. Higgins Rd Ste 400Rosemont IL 60018

Charles E. Lane, Jr. And James Lane P.O. Box 69 Deer Lodge MT 59722-0069 Charles Mix Electric Assn. Inc. P. O. Box 10 Lake Andes SD 57356-0010 Check Point Customer Advocacy 2505 North Highway 360 Suite 800 Grand Prairie TX 75050 Cheryl Lowe 5500 Upper River Road Grants Pass OR 97526

As Trustee Of The Property Of Chicago, Milwaukee, St. Paul And Chicago, Milwaukee, St. Paul Pacific Railroad Company Mr. Richard B. Ogilvie And Pacific Railroad Company 516 West Jackson BoulevardChicago IL 60606 Choteau High School P.O. Box 857 Choteau MT 59422 Chuck Schollmeyer d/b/a Phillipsburg Cable TV P.O. Box 40 Philipsburg MT 59858 Ciber Network Services, Inc. 1 S. 450 Summit Avenue Suite 210 Oakbrook Terrace IL 60181 Cibola Energy Services Corporation 11011 Q Street 106A Omaha NE 68137 Cinda Cloud P.O. Box 511 Burley WA 98322-0511 Cisco Systems 170 West Tasman Dr. San Jose CA 95134-1706

Citizens Lehman Power Sales 530 Atlantic Avenue Boston MA 02210

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 11 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

Citrix Yvette Deleon c/o Subscription Advantage P.O. Box 5023 Ft Lauderdale FL 33310-5023 City Groton Anita Lowary Finance Officer P.O. Box 587 Groton SD 57445

City Of Aberdeen Brown County 123 South Lincoln Street Aberdeen SD 57401 City Of Aberdeen The Honorable Tom Hopper 123 South Lincoln Street Aberdeen SD 57401 City Of Aberdeen Aberdeen Parks And Recreation 401 N. Washington St Aberdeen SD 57401 City Of Aberdeen Water And Sewer Commissioner P.O. Box 1299 Aberdeen SD 57401 City Of Arlington P.O. Box 379 Arlington SD 57212-0379

City Of Bryant Ms Tracy Larson P.O. Box 145 Bryant SD 57221-0145 City Of Clear Lake, South Dakota P.O. Box 107 Clear Lake SD 57226

City Of Clear Lake, South Dakota P.O. Box 108 Clear Lake SD 57226

City Of Grand Island, Nebraska 100 E 1st St Grand Island NE 68801

City Of Grand Island, Nebraska 100 E 1st St Grand Island NE 68801

City Of Grand Island, Nebraska 100 E 1st St. Grand Island NE 68801

City Of Grand Island, Nebraska 101 E 1st St Grand Island NE 68801

City Of Grand Island, Nebraska 102 E 1st St Grand Island NE 68801

City Of Grand Island, Nebraska 103 E 1st St Grand Island NE 68801

City Of Grand Island, Nebraska 104 E 1st St Grand Island NE 68801 City Of Great Falls P.O. Box 5021 Great Falls MT 59403 City Of Howard 203 Chet Cory Dr. Howard SD 57349

City Of Howard 203 Chet Cory Dr. Howard SD 57349

City Of Huron City Hall Beadle County Huron SD 57350 City Of Huron Airport Board City Hall Beadle County Huron SD 57350 City Of Huron Airport Board City Hall Beadle County Huron SD 57350 City Of Huron Airport Board Of The Citiy Of Huron Beadle County South Dakota City Hall, Beadle County Huron SD 57350

City Of Kearney, Nebraska 18 E 22nd St Kearney NE 68847 City Of Kearney, Nebraska 18 E 22nd St Kearney NE 68847 City Of Kearney, Nebraska 19 E 22nd St Kearney NE 68847 City Of Kearney, Nebraska 20 E 22nd St Kearney NE 68847

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 12 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

City Of Kearney, Nebraska 21 E 22nd St Kearney NE 68847

City Of Kearney, Nebraska 22 E 22nd St Kearney NE 68847 City Of Langford Municipal Finance Officer P.O. Box 191 Langford SD 57454-0191 City Of Madison 116 W. Center P.O. Box 309 Madison SD 57042

City Of Madison, South Dakota 116 W. Center P.O. Box 308 Madison SD 57042

City Of Milbank Denise Pescohong P.O. Box 472 Milbank SD 57252 City Of Milbank 401 South Main Street Milbank MD 57252 City Of Milbank 401 South Main Street Milbank SD 57252

City Of Milbank, South Dakota 401 South Main Street Milbank SD 57252 City Of Miller Mr. Bill Lewellen P.O. Box 69 Miller SD 57362 City Of Miller, South Dakota Mr. Bill Lewellen P.O. Box 69 Miller SD 57362 City Of Mitchell, South Dakota P.O. Box 278 Mitchell SD 57301 City Of Mitchell, South Dakota P.O. Box 278 Mitchell SD 57301 City Of Mitchell, South Dakota P.O. Box 278 Mitchell SD 57301

City Of Mitchell, South Dakota P.O. Box 278 Mitchell SD 57301 City Of Mitchell, South Dakota P.O. Box 278 Mitchell SD 57301

City Of Mitchell, South Dakota P.O. Box 278 Mitchell SD 57301 City Of Mitchell, South Dakota South Dakota Department Of Revenue Richard F. Kneip Building 700 N. Illinois Pierre SD 57501-2276

City Of Parker P.O. Box 265 Parker SD

City Of Parkston, South Dakota P.O. Box 490 Parkston SD 57366 City Of Platte, South Dakota P.O. Box 236 Platte SD 57369

City Of Scotland Bon Homme County P.O. Box 316 Scotland SD 57059

City Of Scotland Bon Homme County P.O. Box 316 Scotland SD 57059

City Of Springfield Bon Homme County P.O. Box 446 Springfield SD 57062 City Of Yankton Chan Gurney Airport 700 E 31st St Yankton SD 57078 City Of Yankton Chan Gurney Airport 700 E 31st St Yankton SD 57078

Clapp Research Associates PC 6112 Saint Giles St Raleigh NC 27612 Claremont RR 2 Box 132 A Castlewood SD 57223 Claremont Colony RR 2 Box 132A Castlewood SD 57223

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 13 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Clarence Rogers 1085 Tulip Pl. Manteca CA 95336-7710 Clarence Whitbeck c/o George Ingalls Attny-In-Fact Route 1 Box 5925-3 Red Lodge MT 59068 Clark City Pool Site P.O. Box 217 Clark SD 57225 Clark Electric HC62 Box 3070 Stanford MT 59479 Clark Fork Telecommunications, Inc. 1112 N Russell St Missoula MT 59802 Clark Grade School 220 N. Clinton Clark SD 57225-1318 Clark High School 220 N. Clinton Street Clark SD 57225 Clark High School 220 N. Clinton Box 220 Clark SD 57225-1318 Class Clay Creamery 4164th Ave SW Aberdeen SD 57401 Cleve W. Stutzman 2020 East Capital Ave. Grand Island NE 68801 Cleveland Inspection Services Inc. P.O. Box 100 Cleveland OK 74020

Clifford Of Vermont/TVC Cyrus Parker P.O. Box 5186 Bethel VT 05032 Cline, D.J. 322 Eastern Ave. Brookings SD 57006

CMS (Centers For Medicare Services) Lara Finch 2501 Beltview P.O. Box 4310 Helena MT 59604-4310 Coast Energy Group 1600 Highway 6 Ste 400 Sugarland TX 77478 Coast Energy Group A Division Of Cornerstone Propane LP 125 S. Dakota Ave. Sioux Falls SD 57104 Codington-Clark Electric 3-8th Ave SE P.O. Box 880 Watertown SD 57201 Codington-Clark Electric Cooperative Inc. P.O. Box 880 Watertown SD 57201 Cold Spring Granite Company 14982 485th Ave. Milbank SD 57252

Cole Construction Inc. Steve Or Pat Cole Route 1 Box 98A Silesia MT 59041 College Park 3180 W. Highway 34 Grand Island NE 68801 Colorado Interstate Gas Company P.O. Box 1087 Colorado Springs CO 80944 Colstrip High School P.O. Box 159 Colstrip MT 59323 Columbia Falls Aluminum Company Mike Davis P.O. Box 10 Columbia Falls MT 59912 Commercial Asphalt S Riverside Exit 25254 413th Ave Mitchell SD 57301-7825 Commercial Bank Insurance 505 W. 7th St. P.O. Box 98 Woonsocket SD 57385

Commercial Empire Inc. d/b/a Campwell Drilling & Pump Supply 1522 South 14th St West Missoula MT 59801

Commercial Energy Of Montana President 118 East Main St P.O. Box 548 Cut Bank MT 59427 Commercial Energy Of Montana Ron Perry P.O. Box 548 Cut Bank MT 59427 Commercial Energy Of Montana Ronald L Perry P.O. Box 548 Cut Bank MT 59427 Communication Enterprises, Inc. Richard W. Johnston, Manager P.O. Box 67 Woonsocket SD 57385 Communication Enterprises, Inc. Richard W. Johnston, Manager P.O. Box 67 Woonsocket SD 57385 Communication Enterprises, Inc. Richard W. Johnston, Manager P.O. Box 67 Woonsocket SD 57385 Communication Enterprises, Inc. Richard W. Johnston, Manager P.O. Box 67 Woonsocket SD 57385 Communication Enterprises, Inc. Richard W. Johnston, Manager P.O. Box 67 Woonsocket SD 57385 Community Memorial Hospital 111 W 10th Ave Redfield SD 57469-1519 Community Memorial Hospital 111 W 10th Ave Redfield SD 57469-1519 Community Memorial Hospital 111 W 10th Ave Redfield SD 57469-1519 Comprehensive Hearing Services Christian Grover 2626 Wynne Helena MT 59602

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 14 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

Michelle Chapman Worldwide Compsych Headquarters NEC Towers, 13th Fl 455 N Cityfront Plaza Dr Chicago Il 60611-5532 Computalog USA Inc. 2675 Enterprise Ave Billings MT 59102

Computer Associates International, Inc. One Computer Associates Plaza Islandia NY 11749 ComTech Group Usa, Inc. 75 Tri-State International Suite 200 Lincolnshire IL 60069 Con Way Transportation Services Jacki Boaz 5555 Rufe Snow Drive Ste 5515 North Richland Hills TX 76180 Con Way Western Express Gregg Gardner 3909 Wynne Ave Butte MT 59701 Confluence Consulting Inc. 211 N Grand Ave Ste E Bozeman MT 59715

Confluence Consulting Inc. Jim Lovell 211 N Grand Ave Ste E Bozeman MT 59715

Conoco Philips Company Power Contracts P.O. Box 2197 Houston TX 77252-2197 Conoco Pipe Line Company 600 N. Dairy Ashford Houston TX 77079

Conoco, Inc. Manager Billings Refinery P.O. Box 30198 Billings MT 59107-0198 Conoco, Inc. Rita Williams P.O. Box 2197 Houston TX 77252-2197 Conrad Construction Co. Ltd. Rte 70 Box 49 Chinook MT 59701 Constance C. Hobert, Trustee 5 Graylyn Place Court Winston Salem NC 27106 Continental Casualty Co.; National Fire Ins. Co. Of Hartford; American Casualty Co. Of Reading, Pennsylvania; The Continental Ins. Co.; Fireman's Ins. Co. Of Newark, New Jersey; Western Surety Co.; Universal Surety Of America; Surety Bonding Co. Of America 333 South Wabash Chicago IL 60604 Continental Casualty Co.; National Fire Ins. Co. Of Hartford; American Casualty Co. Of Reading, Pennsylvania; The Continental Ins. Co.; Fireman's Ins. Co. Of Newark, New Jersey; Western Surety Co.; Universal Surety Of America; Surety Bonding Co. Of America 333 South Wabash Chicago IL 60604 Continental Casualty Co.; National Fire Ins. Co. Of Hartford; American Casualty Co. Of Reading, Pennsylvania; The Continental Ins. Co.; Fireman's Ins. Co. Of Newark, New Jersey; Western Surety Co.; Universal Surety Of America; Surety Bonding Co. Of America 333 South Wabash Chicago IL 60604

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 15 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Continental Casualty Co.; National Fire Ins. Co. Of Hartford; American Casualty Co. Of Reading, Pennsylvania; The Continental Ins. Co.; Fireman's Ins. Co. Of Newark, New Jersey; Western Surety Co.; Universal Surety Of America; Surety Bonding Co. Of America 333 South Wabash Chicago IL 60604 Continental Casualty Co.; National Fire Ins. Co. Of Hartford; American Casualty Co. Of Reading, Pennsylvania; The Continental Ins. Co.; Fireman's Ins. Co. Of Newark, New Jersey; Western Surety Co.; Universal Surety Of America; Surety Bonding Co. Of America 333 South Wabash Chicago IL 60604 Continental Casualty Co.; National Fire Ins. Co. Of Hartford; American Casualty Co. Of Reading, Pennsylvania; The Continental Ins. Co.; Fireman's Ins. Co. Of Newark, New Jersey; Western Surety Co.; Universal Surety Of America; Surety Bonding Co. Of America 333 South Wabash Chicago IL 60604 Continental Casualty Co.; National Fire Ins. Co. Of Hartford; American Casualty Co. Of Reading, Pennsylvania; The Continental Ins. Co.; Fireman's Ins. Co. Of Newark, New Jersey; Western Surety Co.; Universal Surety Of America; Surety Bonding Co. Of America 333 South Wabash Chicago IL 60604 Continental Casualty Co.; National Fire Ins. Co. Of Hartford; American Casualty Co. Of Reading, Pennsylvania; The Continental Ins. Co.; Fireman's Ins. Co. Of Newark, New Jersey; Western Surety Co.; Universal Surety Of America; Surety Bonding Co. Of America 333 South Wabash Chicago IL 60604 Continental Casualty Co.; National Fire Ins. Co. Of Hartford; American Casualty Co. Of Reading, Pennsylvania; The Continental Ins. Co.; Fireman's Ins. Co. Of Newark, New Jersey; Western Surety Co.; Universal Surety Of America; Surety Bonding Co. Of America 333 South Wabash Chicago IL 60604 Continental Western Insurance Company 2186 Bella Vista St. Wichita KS 67203

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 16 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Continuum Bruce Davis 10920 Via Frontera San Diego CA 92127 Convention Center 1400 8th Ave Northwest Aberdeen SD 57401 Coon Rapids Municipal Light Plant 123 3rd Ave. Coon Rapids IA 50058 Coon Rapids Municipal Utilities 123 3rd Ave. Coon Rapids IA 50058 Cooper Energy Services Division Of Cameron Cooper Corporation 1950 N. Loop Ave Casper WY 82601 Cordero Mining Company 505 S. Gillette Avenue Caller Box 3009 Gillette WY 82717 Corn Belt Power Cooperative 3365 165th Ave. Spencer IA 41301 Corn Belt Power Cooperative 3365 165th Ave. Spencer IA 41301 Cornerstone Propane LP+C460 125 S. Dakota Ave. Sioux Falls SD 57104 Corporate Express Dave Nei 28241 Mound Rd Warren MI 48092

Corporate Express Office Products Inc. Attn: Brian A Taylor 28241 Mound Rd Warren MI 48092 Corporate Services, A Business Unit Of American Express Travel Related Services Company Inc. Travel Group Service Center 20022 N 31st Ave P.O. Box 53800 Phoenix AZ 85027

Country General 2201 SE 6th Ave Aberdeen SD 57401 Country General 2201 SE 6th Ave Aberdeen SD 57401 County General 1011 Claude Road Grand Island NE 68803 Courier Dispatch P.O. Box 1096 Minneapolis MN 55440 Coyote Air LLC 135 Foxtail Ln Butte MT 59701

CR Solutions Inc. 1717 Black Ave 57 Bozeman MT 59715 Credit Bureau Collection Services P. O. Box 755 Yankton SD 57078 Attention Agency Department Credit Suisse First Boston As Administrative Agent And A Lender Manager Eleven Madison Ave New York NY 10010 Attention Agency Department Credit Suisse First Boston As Administrative Agent And A Lender Manager Eleven Madison Ave New York NY 10010 Attention Agency Department Credit Suisse First Boston As Administrative Agent And A Lender Manager Eleven Madison Ave New York NY 10010 Croft Petroleum Company President 214 N Central Ave P.O. Box 397 Cut Bank MT 59427 CTA Architects Engineers Rick Demarinis 32 W Sixth Ave Helena MT 59601 CTA Architects Engineers 32 W 6th Ave Helena MT 59601 Cummins Rocky Mountain Inc. 5151 Midland Rd Billings MT 59101 Cummins Rocky Mountain LLC Chad Casper 5151 Midland Rd Billings MT 59101 Custom Floors Inc. 1953 S Montana St Butte MT 59701 Cut Bank Gas Company Dan Whetstone 403 East Main Street Cut Bank MT 59427 D & M Cable, A Partnership Douglas J Luebke P.O. Box 23 Corsica SD 57328 D Gary Kabeary 2608 Silver Bow Blvd Billings MT 59102 D&G Crane Service Inc. P.O. Box 3149 Missoula MT 59806

D.J. Cline Dorothy Cline P.O. Box 5057 Brookings SD 57006 D.J. McClure Platte Community Cable Television 519 North Main Redfield SD 57469 D.J. McClure Platte Community Cable Television 519 North Main Redfield SD 57469 D.J. McClure Platte Community Cable Television 519 North Main Redfield SD 57469 Daily Inter Lake 727 East Idaho P.O. Box 7810 Kalispell MT 59904 Dakota Central Telephone Company P. O. Box 299 Carrington ND 58421 Dakota Electronics, Inc. 424 Brown County 19 S Aberdeen SD 57401-5530

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 17 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Dakota Granite 301 S. Main Milbank SD 57252 Dakota Lodging Ltd 2727 SE 6th Ave Aberdeen SD 57401 Dakota Midland Hospital 1400 15th Ave NW Aberdeen SD 57401 Dakota Mobil Hydraulics 111 30th Avenue Brookings SD 57006 Dakota Plains Surgical Center 701 NW 8th Ave Aberdeen SD 57401

Dakota Wesleyan University Superintendent Of Electricity Mitchell SD 57350 Dale A. Luikens P.O. Box 116 Menno SD 57045

Dale T King d/b/a Gregson Creek Geological Dale T King 185 Shirley Way Anaconda MT 59711 Dan & Jerry's Greenhouses Inc. RR1 Madison SD 57042 Dan Kapperman RR2 Box 58 Montrose SD 57048 Dan Meyers Construction 265 10th St., N.E. Huron SD 57350 Danny And Connie Hofer 730 Beach Ave., N.E. Huron SD 57350 Danny And Connie Hofer d/b/a Slim's Concessions P. O. Box 124 Huron SD 57350-0124 Darold D. Runge Route #5 Box 3-A Grand Island NE 68801 Darold D. Runge Route #5 Box 3-A Grand Island NE 68801 Darold D. Runge Route #5 Box 3-A Grand Island NE 68801 Darold D. Runge Route #5 Box 3-A Grand Island NE 68801 Darold D. Runge Route #5 Box 3-A Grand Island NE 68801

Dave Cory - PacifiCorp 700 NE Multnomah, Suite 550 Portland OR 97232 Dave Dereu Dereu Snow Removal 419 Margarethe Rd Kalispell MT 59901 Dave Hutchison d/b/a Hutchs Electric 1219 W Montana Lewistown MT 59457 David G Levee 7260 NE Earlwood Rd Newburg Or 97132 Dawn Degrey-Neuman 602 East Saint Andrews Circle Dakota Dunes SD 57049-5132 Day County Board Of Commissioners 711 W 1st St. Webster SD 57274-1361 Deaconess Billings Clinic Jill Stenger P.O. Box 37000 Billings MT 59107 Debbie Voigt 225 Main St. S Avon SD 57315 Debra Lynn Wood 5935 Nelson Road SE Olalla WA 98359 Decker Architecture, PC 415 N Higgins Suite 2 Missoula MT 59802

Deering Enterprises d/b/a Total Lawn Care 746 Woodland Ave Kalispell MT 59901

Deister Ward & Witcher Inc. Mitch Cowan 14901 Hampden Ave Ste 305 Aurora CO 80014

Dell Financial Services P.O. Box 811550 Chicago IL 60681 Dell Financial Services P.O. Box 811550 Chicago IL 60681 Dell Marketing LP One Dell Way Round Rock TX 78682 Dell Mcalpine 12880 F. M. 645 Palestine TX 75803

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 18 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Deloitte & Touche LLP 400 One Financial Plaza 120 South Sixth St Minneapolis MN 55402-1844 Deloitte & Touche LLP 400 One Financial Plaza 120 South Sixth St Minneapolis MN 55402-1844 Deloitte & Touche LLP 400 One Financial Plaza 120 South Sixth St Minneapolis MN 55402-1844 Deloitte & Touche LLP 400 One Financial Plaza 120 South Sixth St Minneapolis MN 55402-1844 Deloitte & Touche LLP 400 One Financial Plaza 120 South Sixth St Minneapolis MN 55402-1844 Deloitte & Touche LLP 400 One Financial Plaza 120 South Sixth St Minneapolis MN 55402-1844 Deloitte & Touche LLP 400 One Financial Plaza 120 South Sixth St Minneapolis MN 55402-1844 Deloitte & Touche LLP 400 One Financial Plaza 120 South Sixth St Minneapolis MN 55402-1844 Deloitte & Touche LLP 400 One Financial Plaza 120 South Sixth St Minneapolis MN 55402-1844 Deloitte & Touche LLP 400 One Financial Plaza 120 South Sixth St Minneapolis MN 55402-1844 Deloitte & Touche LLP 400 One Financial Plaza 120 South Sixth St Minneapolis MN 55402-1844 Deloitte & Touche LLP 400 One Financial Plaza 120 South Sixth St Minneapolis MN 55402-1844 Deloitte & Touche LLP 400 One Financial Plaza 120 South Sixth St Minneapolis MN 55402-1844

Delta Dental Plan - SD Ms Sidney Gran P.O. Box 1157 Pierre SD 57501 Delwyn O. Gage Marlene Gage 64 Laurel Ln. Bigfork MT 59911-7418

Dennis Flath d/b/a Apex Environmental 365 W River Rock Rd Belgrade MT 59714 Dennis Hoeger d/b/a Hoeger Jackson Associates 216 Summer Cutoff Rd Bozeman MT 59715-8416 Dennis Warner Rt 4 Box 141 Grand Island NE 68801 Department Of Energy Western Area Power Administration Upper Great Plains Region P.O. Box 35800 Billings MT 59107 Department Of Energy Western Area Power Administration Upper Great Plains Region P.O. Box 35800 Billings MT 59107

Aberdeen South Dakota Department Of Military Affairs Attn: Clifford J. Zent Armory 2823 West Main St Rapid City SD 57702-8186

Department Of Natural Resources And Conservation (Broadwater Dam) Mr. Jack Stults P.O. Box 201601 Helena MT 59620-1601

Dependable Sanitation Attn: Mike Erickson 1520 Brown County 19N Aberdeen SD 57401 Dept Of Milt Affair 115 S Roosevelt Aberdeen SD 57401

Derue, Dave (Prev. A2058) Dave Derue 419 Margarette Rd Kalispell MT 59901 Desmet Public School - Armory 405 3rd Ave., S.W. Desmet SD 57231 Deuel County Court House 400 W 4th Street Clear Lake SD 57226 Deuel County Hospital 701 S 3rd Clear Lake SD 57226 Deuel County Memorial Hospital & Clinic 701 Third Ave So P.O. Box 1037 Clear Lake SD 57226 Deuel School Dist 19-4 600 4th Ave Clear Lake SD 57226 Deuel School Dist 19-4 600 4th Ave Clear Lake SD 57226 Diane Worrall 21372 401st Avenue Huron SD 57350 Dick Irvin Inc. P.O. Box 950 Shelby MT 59474-0950 Digital Equipment Corporation 111 Powdermill Road Maynard MA 60181

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 19 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Distribution Construction P.O. Box 19991 Greensboro NC 27419 Distribution Construction Co. Attn: Red Cripps, President P.O. Box 19991 Greensboro NC 27419 Distribution Construction Company P.O. Box 1991 Greensboro NC 27419 Distribution Construction Company P.O. Box 19991 Greensboro NC 27419

Dj & A, PC Glenn Howard 3203 Russell St Missoula MT 59801 Dj&A Marijean Charles 3203 Russell Street Missoula MT 59801 D'Luxe Car Wash Attn: Mr. Lee Wilson 602 S Lawson St Aberdeen SD 57401 D'Luxe Car Wash 602 S Lawson St Aberdeen SD 57401 DMCM Inc. 1616 Highland Helena MT 59601 Doble Engineering 85 Walnut St Watertown MA 02472 Docktor, Mick 108 S. Truck St. Kimball SD 57355-2103 Dodge And Cox Ms Dana Emery One Sansome St 35th Fl San Francisco Ca 94104 Doland School P.O. Box 385 Doland SD 57436-0385 Dolores M. Boe 123 North 144th St. Seattle WA 98133 Dolphin 1510 Fashion Island Blvd Suite 102 San Mateo Ca 94404 Domestic Seed & Supply Co Inc. (Grain Division) 3rd Street P. O. Box 466 Madison SD 57042-0466 Don And Andrea Beer d/b/a Stillwater Excavating P.O. Box 865 Columbus MT 59019-0865 Don David Farms Box 325 Milbank SD 57252 Don Healy RR2 Box 60 Montrose SD 57048

Don R. Warnken P.O. Box 753 Superior MT 59872

Don Ray Lucke 3155 Parkwood Lane Big Fork MT 59911 Donagene Lafromboise P.O. Box 1160 Helena MT 59635 Donald Mccourt 2125 Stonecrop Way Golden CO 80401

Donald Fred Jenni (Jenni Hydro) Hanover Hydro Route #2, box 2228 Lewistown MT 59457-9263 Donald Kenneth Peterson P.O. Box 1244 Big Fork MT 59911 Donald Prouty Grain Dryer RR 1 Box 108 Bryant SD 57221 Donna Marie Page 708 Coyote Court Great Falls MT 59404 Doris C. Whitcomb P.O. Box 1508 Red Lodge MT 59068 Doug And Cheryl Sunne 47770 Linden Beach Road Corona SD 57227

Doug Boutilier P.O. Box 6013 Helena MT 59601-6013 Douglas L. Wheeler c/o Northwestern Energy 40 East Broadway Butte MT 59701 Douh And Cheryl Sunne Milbank Office 47770 Linden Beach Rd Corona SD 57227 2157 W Cameron Bridge Rd Douma Construction Pete Douma West Bozeman MT 59718 Dr Thomas Berbos 1900 NW 40th Ave Aberdeen SD 57401 Dreyfus Service Corporation Attn: Frank Pirrone One Dearborn St Suite 1400 Chicago IL 60602 Drillworx LLC 1612 South 2nd West 1 Missoula MT 59801 Drummond Cable TV P.O. Box 265 Cowley WY 82420 Duke Energy Trading and Marketing LLC, Manager - Power Marketing 4 Triad Center, Suite 1000 Salt Lake City UT 84180 Duke Energy Trading and Marketing LLC, Manager - Power Marketing 4 Triad Center, Suite 1000 Salt Lake City UT 84180 E J Brooks Company Donna Bryant P.O. Box 475 Livingston NJ 07039-1602

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 20 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country E O Johnson Motor Howard Johnson 801 Auto Plaza Dr Aberdeen SD 57401 E O Johnson Motor Howard Johnson 801 Auto Plaza Dr Aberdeen SD 57401 Eagle Communications (Keci), Keith Sommer P.O. Box 5268 Missoula MT 59806 Eagle Fence Inc. 99 High Plains Rd Belgrade MT 59714-8370 Eagle Research Corporation (American Meter Company) Product Development & Engineering 4036 Teays Valley Road P.O. Box 668 Scott Deport WV 25560 Earl Monaco Natural Gas Services Inc. P.O. Box 997 2531 Krysty Dr Missoula MT 59802 Earl Monaco d/b/a Natural Gas Services 2531 Krysty Dr Missoula MT 59801 East Ridge Rentals LLC 226 East Broadway Butte MT 59701 East River Electric Cooperative Inc. P. O. Box 227 Madison SD 57042-0227 East River Electric Cooperative Inc. P. O. Box 227 Madison SD 57042-0227 East River Electric Cooperative Inc. P. O. Box 227 Madison SD 57042-0227 East River Electric Power Cooperative P. O. Box 227 Madison SD 57042-0227 East River Electric Power Cooperative P.O. Box 31 Madison SD 57042 East River Electric Power Cooperative, Inc. 121 SE 1st Street Madision SD 57042 East Side Coin Laundry 1601 SE Sixth Ave Aberdeen SD 57401 East Side Coin Laundry Box 608 Aberdeen SD 57401 East Side Laundry Attn: Frank Dixon 1601 SE Sixth Ave Aberdeen SD 57401

Eby & Associates Inc. Jane Eby P.O. Box 7144 Kalispell MT 59901

Eby & Associates Inc. P.O. Box 7144 Kalispell MT 59901 ECI 3521 Gabel Rd Billings MT 59102 Ecolab Pest Elimination Division P.O. Box 6007 3535 S 3rd St Grand Forks ND 58206-6007

Ecommerce Group Products Inc. Darren Manelski 7 Dey St New York NY 10007 Econo Foods (Nash Finch) 3420 West State Grand Island NE 68803 Econo-ExP.O.rt Henry Skinner P.O. Box 19862 Raleigh NC 27615 Econsult James Falvey 1005 16th Butte MT 59701 Ed Boland Construction Inc. d/b/a Boland Drilling Company 4601 7th Avenue South Great Falls MT 59405 Ed Schlarick Grizzly Corporation Fence Division 1720 South 3rd West Missoula MT 59801-2246 EDM International Inc. Valerie Bagley 4001 Automation Way Fort Collins CO 80525-3479 Edna A. Swab Box 20222 Billings MT 59104 Edna Bailey 516 N 11th Ave Hill City KS 67642 EEI Online Edison Electric Institute 701 Pennsylvania Ave, NW Washington DC 20004-2696 Eleanor H Clapp c/o Northwestern Energy 40 East Broadway Butte MT 59701 Electrical Consultants Inc. 1127 Alderson Ave Billings MT 59102

Electrical Consultants Inc. Dick Mccomish 3521 Gabel Rd Billings MT 59102-7303 Elite Underwriting Services - American Fidelity Insurance Co. Helen Kreiser 191 Sheree Blvd Exton PA 19341 Elizabeth Blair Hecht c/o Bank One P.O. Box 2605 Fort Worth TX 76113 Elizabeth Jakkola 2036 Sierra Drive Elko NV 89801 Elster Electricity LLC Lori Olive 208 S Rogers Ln Raleigh NC 27610 Elster Electricity LLC Lori Olive 208 S Rogers Ln Raleigh NC 27610 Emil Schaaf Route #2, South Blaine Grand Island NE 68801 Empire Office Machines, Inc. 821 North Main St. Helena MT 59601

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 21 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Empire Office Machines, Inc. 206 West Granite Street Butte MT 59701 Empress Software 6401 Golden Triangle Dr Greeneelt MD 20770

Empress Software Inc. Channa Watson 11785 Beltsville Dr Suite 1650 Beltsville MD 20705 Encana Energy Services 950-17th St Suite 2600 US Bank Tower Denver CO 80202 Encana Gathering Services (Usa) Inc. Suite 2600 950-17th Street Us Bank Tower Denver CO 80202

Encana Gathering Services (USA) Inc. Suite 2600 950-17th Street Us Bank Tower Denver CO 80202 Encana Marketing Usa Renee Zemljak 950 17th Street Suite 2600 Denver CO 80202 Encana Oil And Gas Inc. Suite 2600 950-17th Street Us Bank Tower Denver CO 80202 Energy & Environment Measurement Corporation 1744 Mullowney Ln. Billings MT 59101 Energy West Montana John Allen P.O. Box 2229 Great Falls MT 59403-2229 Energy West Resources P.O. Box 2229 Great Falls MT 59403 No. 1 First Avenue South P.O. Energy West Resources, Inc. Asst. Vice-President Energy Marketing Box 2229 Great Falls MT 59403 Energy West Resources, Inc. Attn: Joanne Forwood P.O. Box 2229 Great Falls MT 59403 Energy West Resources, Inc. Jim Morin P.O. Box 2229 Great Falls MT 59403-2229 Energy West Resources, Inc. Jim Morin P.O. Box 2229 Great Falls MT 59403-2229 Energy West, Inc. #1 1st Ave S Great Falls MT 59403 Engineering And Consulting Services, Inc. North 2314 Cherry Rd Spokane WA 99216 Engineering And Consulting Services, Inc. North 2314 Cherry Rd Spokane WA 99216 Engineering And Consulting Services, Inc. North 2314 Cherry Rd Spokane WA 99216 Engineering Inc. Rick Leuthold P.O. Box 81345 1001 South 24th St West BillingsSte # 200 MT 59101 Enron Power Marketing, Inc. Power Contracts Manager 1400 Smith Street Houston TX 77002-7361 Enron Power Marketing, Inc. Documentation Manager 1400 Smith Street Houston TX 7702-7361 Epri Solutions, Inc. P.O. Box 10412 Palo Alto CA 94303 Ernest H. Sager & Lola B. Sager Joint Tenants & Soldiers & Sailors Home Box 22 Buffalo WY 82834 Esca Corporation Deborah Mulvihill Or Rosie Maas 1120 NE 33rd Pl Bellevue WA 98004 Esis 7007 College Blvd. Suite 600 Overland Park KS 66211 ESRI, Inc. 380 New York St Redlands CA 92373 Estate Of Gertrude M. Parker And John E. Parker c/o James H. Parker Exec c/o AIF P.O. Box 568 Shelby MT 59474 Estate Of John H. Casey Colorado National Bank P.O. Box 17532 Cndt 2332 Denver CO 80217 300 Kipling Sq 611 Tenth Ave Estate Of Mable Duncan c/o Gregg & Co. Barristers & Sol SW Calgary AB T2R OB2 Canada Estate Of Mary Morris Boykin #535896-5 48 Wall St Bank Of NY New York NY 10286 Estelle Rae Kennedy 10102 S. Glenstone Circle Highland CO 80126 Estelline Co-Op Grain 108 1st St. N. Estelline SD 57234 Estelline Elementary School 404 6th St. N. Estelline SD 57234 Ethan Public School P.O. Box 169 Ethan SD 57334-0169

Ethnoscience Inc. Lynelle Peterson 4140 King Avenue East Billings MT 59101

Ethos Consultants Inc. John Brumley 14 Meadowlark Estates Havre MT 59501 Eugene Joseph Enrico & Sherry Lee Enrico JT 1709 Stonewood Circle Norman OK 73071 Eugenia Ward 286 Katherine Way Auburn CA 95603 Eutis Body Shop P.O. Box 280 Grand Island NE 68802

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 22 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Evans Transfer And Storage Inc. 750 Utah Butte MT 59701

Evergreen Caissons Inc. Robert Jesperson 735 Clarkson St Denver CO 80218 Evergreen Terrace 718 NE 8th Street Madison SD 57042 Everly & Associates P.O. Box 603 Butte MT 59703 Everly & Associates Bob Everly P.O. Box 603 Butte MT 59703 Exec Air Montana Inc. 2560 Airport Rd Helena MT 59601 Executive Director, Energy Supply, NWE 40 E Broadway Butte MT 59701 Exline Inc. P.O. Box 1487 Salina KS 67402-4425 Express Personnel Services 700 East Front St Butte MT 59701 Express Pipeline LLC Ziad Saad 300 5th Ave SW Ste 2700 Stock Exchange Tower Calgary Alberta T2P 5J2 Canada Express Pipeline Partnership Manager Operations And Engineering 3900 421 7th Ave SW Calgary Alberta T2P 4K9 Canada

Exxon Mobil Corporation W. R. Phillips III 800 Bell Street, Room 3423H Houston TX 77002 Falls Construction Company Guy Huestis 1001 River Drive North Great Falls MT 59401 Family Entertainment Network Inc. Kevin Johnson P.O. Box 126 Mitchell SD 57301 Family Entertainment Network Inc. Kevin Johnson P.O. Box 126 Mitchell SD 57301 Family Entertainment Network Inc. Kevin Johnson P.O. Box 126 Mitchell SD 57301 Family Entertainment Network Inc. Kevin Johnson P.O. Box 126 Mitchell SD 57301 Family Entertainment Network, Inc. Kevin Johnson P.O. Box 126 Mitchell SD 57301 Family Entertainment Network, Inc. Kevin Johnson P.O. Box 126 Mitchell SD 57301 Family Entertainment Network, Inc. Kevin Johnson P.O. Box 126 Mitchell SD 57301 Family Health Care PC 1287 Burns Way Kalispell MT 59901 Family Practice Association Vickie Lynn 935 Highland Blvd Ste 4000 Bozeman MT 59715 Family Wellness Center 224 W Main Suite 401 Lewistown MT 59457-2759

Farmers & Merchants Bank & Trust Co 9 SW 3rd Ave. Aberdeen SD 57401

Farmers & Merchants Bank & Trust Co P.O. Box 1210 Aberdeen SD 57402-1210 Farmers & Merchants Bank & Trust Company Attn: Richard Westra President P.O. Box 1210 Aberdeen SD 57402-1210 Farmers Coop Elevator P.O. Box 255 Avon SD Farmers Co-Op Elevator 303 S 2nd Ave Castlewood SD 57223 Farmer's Elevator Box 82 Hazel SD 57242 Farmers Elevator Company P.O. Box 170 Lake Norden SD 57248 Farmers Elevator Company P.O. Box 107 Mellette SD 57461 Farmers Elevator Company P.O. Box 311 Menno SD 57045-0311 Farmers Elevator Company P.O. Box 66 Mount Vernon SD 57363-0066 Farmers Elevator Company # 2 Rural Route Madison SD 57042 Farmers Elevator Tripp/Parkson P.O. Box G Tripp SD 5736-0457 Farmers Union Elevator (Dryer) W Hwy. 34 Howard SD 57349 Farmer's Union Elevator Association W. Market Howard SD 57349 Farstad Oil Inc. P.O. Box 31195 Billings MT 59101 Farstad Oil Inc. Po Box 31195 Billings MT 59101 Faulkton Cable TV Galen Gillette 519 N Main St Redfield SD 57469 FCC 445 12th St SW Washington DC 20554 Federal Building 3rd Ave SE S Lincoln Street Aberdeen SD 57401 Federal Energy Sales, Inc. Attn: Scott Towner 3222 North Ridge Road Elyria OH 44035 Federal Office Building Attn: Chief Bldg Services Lincoln St And 4th Ave SE Aberdeen SD 57401 Fedex Patricia Corrigan 5500 Momont Rd Missoula MT 59808

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 23 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Fergus Electric Cooperative 8470 US 87 E Lewistown MT 59457 Ferney Framers Elevator N Sixth St. Groton SD 57445-2056 Fidelity Gas Co 400 N Fourth St Bismarck ND 57501 Fidelity Gas Co 400 N Fourth St Bismarck ND 57501 Fidelity Gas Co 400 N Fourth St Bismarck ND 57501 Fidelity Gas Co 400 N Fourth St Bismarck ND 57501 Fidelity Gas Co 400 North Fourth Street Bismarck ND 57501 Filenet Corporation 3565 Harbor Blvd Costa Mesa CA 92626 Fire Suppression Systems Inc. 2171 Industrial Dr Bozeman MT 59715 Fire Suppression Systems Inc. 2171 Industrial Drive Bozeman MT 59715 Fire Suppression Systems Inc. 2171 Industrial Drive Bozeman MT 59715 First Bank (N.A.) Redfield 26 E 7th Ave. Redfield SD 57469 First Bank Aberdeen 324 S First St Aberdeen SD 57401 First Baptist Church Attn: The Reverend Harold Salem 1500 E Melgaard Rd Aberdeen SD 57401 First Baptist Church 1500 E Melgaard Rd Aberdeen SD 57401 First Federal Of Lincoln 1811 West 2nd Grand Island NE 68803 First National Bank Northwest Bank 206 S 1st St Aberdeen SD 57401 First National Bank Of Sioux Falls Peg Nelson P.O. Box 5186 Sioux Falls SD 57117-5186 First National Bank| Mr. G.D. Mcquillen Sr. Vice President & Cashier 204 South First St. Aberdeen SD 57401 First Savings Bank Fsb 210 North Main Street P.O. Box 68 Lake Preston SD 57249 First Trust Center Kevin Underkofler 180 E 5th St P.O. Box 64367 St Paul MN 55164 First United Methodist Church Attn: Cal Engel Chairman Of Trustees 502 South Lincoln St Aberdeen SD 57401 First United Methodist Church 502 South Lincoln St Aberdeen SD 57401 Fiware (Saro, Inc.) (Formerly Billserv) (Now Called Harbor Payments Mary Hoskins 1900 Emery St NW, 2nd Floor Atlanta Ga 30318 Flame Inc. 2 S Main St Aberdeen SD 57401 Flathead Janitorial And Rug Services Inc. P.O. Box 7606 Kalispell MT 59903-1201 Flathead Janitorial And Rug Services Inc. Mark Noland P.O. Box 7606 Kalispell MT 59904 Fleet Capital Corporation 50 Kennedy Plaza Providence RI 02903-2305 FMC Box 1947 Aberdeen SD 57401 Fonner Park East Stolley Park Road Grand Island NE 68801 Ford Pamela Mooney 11918 Westline Industrial Dr St Louis MO 63146 Fort Harrison Va Medical Center Mike Harris Va Medical Center Ft. Harrison MT 59636 Foster, Kenneth R.R. Box 254 Estelline SD 57234 Four Seasons Lot Service Inc. 250 5th Ln NE Fairfield MT 59436 11770 U.S. Highway One, Fpl Energy Power Marketing, Inc. Director Of Contracts East Tower, 5th Floor North Palm Beach FL 33408 11770 U.S. Highway One, FPL Energy Power Marketing, Inc. Director Of Contracts East Tower, 5th Floor North Palm Beach FL 33408 Francis Doom 39377 SD Hwy. 50 Wagner SD 57380-7150

Frank Augare d/b/a Trails End Services Hc72 Box 5005 Browning MT 59417 Freeman Telephone Company 707 Skyline Dr. Youngwood PA 15697 Fre-Mar Grain Mill P.O. Box 357 Marion SD 57043-0357 Frisco Cheese Company 105 N. Locust St Big Stone City SD 57216 Froke, Denise 411 5th Ave. NE Watertown SD 57201 Front Range Pipeline LLC President P.O. Box 909 Laurel MT 59044 Front Range Pipeline LLC P.O. Box 909 Laurel MT 59044

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 24 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Front Range Pipeline LLC P.O. Box 909 Laurel MT 59044 Frontier Airlines Inc. Attn: Corporate Accounts Desk 7001 Tower Rd Denver CO 80249 G & D Investment P.O. Box 1857 Aberdeen SD 57402-1857 G Lee Christy d/b/a Diamond Sprinkler Systems 6530 Gooch Hill Rd Bozeman MT 59718 G.I. Surgery Center 3610 Richmond Circle Grand Island NE 68803 Gage Brothers 601 SW 9th Ave Aberdeen SD 57401-5832 Gage Brothers Concrete Materials 601 SW 9th Ave Aberdeen SD 57401 Gail A. Nelson 956 Mesquiete Springs Dr. Unit #102 Mesquite NV 89027-2388 Gail Mccain 827 N. Coulee Hite Rd. Reardon WA 99029 Galen Gillette 910 E 2nd St. Redfield SD 57469

Garman Construction Jeff Garman 1003 4th Ave Southwest Conrad MT 59425 Garnet G. Stern P. O. Box 218 Freeman SD 57029-0218 Garrison Specialties P.O. Box 581 Helena MT 59624 Garrison Specialties P.O. Box 581 Helena MT 59624 Gary D Harrington Harringtons Floor Covering Inc. 1432 Harrison Ave Butte MT 59701 Gary Kabeary 2608 Silver Blvd Billings MT 59102 Gary Wilfred Nadeau P.O. Box 156 Valier MT 59486 Gary Willis 236 Greenwood Dr. Helena MT 59601 Gas Turbine Corporation 51 Bradley Park Road East Graney CN 60626 Gavin Anderson & Company 220 East 42nd St New York NY 10017 GDR Janitorial Greg Or Connie Maciel 1305 Bluebell Dr Billings MT 59105 GE Capital Financial Inc. 4246 South Riverboat Rd Salt Lake City UT 84123 GE Capital Financial Inc. 4248 S Riverboat Rd Salt Lake City UT 84123 GE Capital Financial Inc. 4248 S Riverboat Rd Salt Lake City UT 84123 GE Support Services Ross Dicaprio 4601 Park Rd Suite 600 Charlotte Nc 28209 Ge Support Services Ross Dicaprio 4601 Park Rd Suite 600 Charlotte Nc 28209 Ge Support Services Ross Dicaprio 4601 Park Rd Suite 600 Charlotte NC 28209 Gem Company 915 SW 7th Madison SD 57042 Gene Lundborg RR2 Box 61 Labolt SD 57252 General Electric Capital Corporation 1415 W 22nd St Ste. 400 Oak Brook IL 60523 General Electric Capital Corporation 44 Old Ridgebury Road Danbury CT 06810-5105 General Services Administration - Public Building Service Public Service Building Washington DC 20405 General Services Administration - Mountain-Plains Service Center (8Pm-P) - Room 288 - Denver Federal Rocky Mountain Region Building 41 Center P.O. Box 25546 Denver CO 80225-0546 Genevieve Walker P.O. Box 3012 Auburn CA 95604-3012 George L. Timothy Grayson 1440 Washington Dr. Huron SD 57350 George O'Brien P.O. Box 580 Stolley Park Road Grand Island NE 68801 Georgia Quilici d/b/a Quilici Glass P.O. Box 525 Butte MT 59701 Gerald And Glenda Ohs Should Be Pony Generating Station Bingham Engineering Mr. Brent Bingham 100 Lindbergh Plaza 2, 5160Salt Wiley Lake PostCity Way UT 84116-2886 Gertrude O. Peterson P.O. Box 295 Cut Bank MT 59427 Getthere DirerectCorporate Customer Agreement Attn: Patrick Coleman 125 S Dakota Sioux Falls SD 57104 GI Bottling Co. Box 1374 Grand Island NE 68802-1374 Gillas J. Stern P. O. Box 218 Freeman SD 57029-0218 Glacier Energy Inc. David W Chapman P.O. Box 2090 Cut Bank MT 59427 Glacier Paving Inc. William Traeger P.O. Box 9222 Kalispell MT 59904 Glasgow High School P.O. Box 28 Glasgow MT 52230

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 25 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Glendale Colony 17866 Glendale Dr. Frankfort SD 57440-7201 Glenn Mcalpine 3025 E. Smith Rd. Bellingham WA 98226-9563 Gliko Aviation Inc. 579 Belt Creek Rd Belt MT 59412 Global Energy Concepts LLC Aka Gec LLC 5729 Lakeview Dr NE Ste 100 Kirkland WA 98033 Gloria Taylor d/b/a Glos Cleaning Services 422 9th Ave Southeast Cut Bank MT 59427-3531 GMC Dave Haselhorst 3800 W 80th St Bloomington MN 55431 Golden Stone Dan Hickman 4150 Hillside Dr. Butte MT 59701 Golden Triangle Community Mental Health Center Holiday Village Shopping Center Great Falls MT 59405 Gooch Hill Enterprises Inc 7825 Gooch Hill Rd Bozeman Mt 59718 Gooch Hill Enterprises Inc. Nich Strauger 7825 Gooch Hll Rd. Bozeman Mt 59718 Good Samaritan Center 130 6th Scotland SD 57059 Good Samaritan Center 913 S 4th Ave Clear Lake SD 57226 Good Samaritan Center 411 NW Calumet Desmet SD 57231 Good Samaritan Center 300 N. Dobson Tripp SD 57376 Good Samaritan Center 300 N. Dobson Tripp SD 57376 Gopher Sign 1310 Randolph Ave St Paul MN 55105 Gopher Sign Co Hwy 22 E Box 768 Clear Lake SD 57226 Gordon Evans 2215 West Koenig Grand Island NE 68801 Gorsuch Kirgis LLP Thomas Teneneaum, Esq 1515 Arapahoe Tower 1 Suite 1000 Denver CO 80202 Gorsuch Kirgis LLP Thomas Teneneaum, Esq 1515 Arapahoe Tower 1 Suite 1000 Denver CO 80202 Graettinger Municipal Light Plant 101 W. Hoffman St. Graettinger IA 51342 Grant County 210 E 5th Milbank SD 57252-2433 Grant County 210 E 5th Milbank SD 57252-2433 Grant County 210 E 5th Milbank SD 57252-2433 Grant Inc. 600 Market Street West Huron SD 57350 Grant Inc. 600 Market Street West Huron SD 57350 Graphic Technologies Inc. 2729 Deford Mill Rd Hampton Cove AL 35763

Graphic Technologies Inc. 9668 Madison Blvd Suite 4 Madison AL 35758

Graphic Technologies, Inc. 2729 Deford Mill Road Hampton Cove AL 35763 Graybar Electric Company Inc 34 N Meramec Ave Clayton MO 63105 Great Falls Clinic LLP d/b/a Helena Physicians Clinic 3330 Ptarmigan Ln. Helena MT 59602 Great Falls Tribune P.O. Box 5468 Great Falls MT 59403 Great Plains Ethanol, LLC 27716 462 Ave. Chancellor SD 57015 Great Platte River Road Memorial Great Platte River Road Memorial Foundation Archway 1004 Farnam St Ste 102 Omaha NE 68102 Gregg Engineering, Inc. P.O. Box 590 Sugarland TX 77487 Grizzly Corporation Fence Division 1720 S 3rd West Missoula MT 59801-2246 Grizzly Power Clean Randy Oppegaard 1413 South 4th St West Missoula MT 59801

Grizzly Security Armored Express Inc. P.O. Box 1682 Kalispell MT 59903 Groebner & Associates John Nylin 9530 Fallon Ave. NE Monticello MN 55362 Gro-Joy Plants. Inc. RR 2 P.O. Box 532 Madison SD 57042 Groton Public School 125 E. 4th Ave Groton SD 57445 Groton Public School - Elementary M J Weber Business Manager 810 North 1st Street P.O. Box 410 Groton SD 57445

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 26 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Groton Public School - Elementary 810 N. 1st St. Groton SD 57445 Groton Public School - High School 125 E. 4th Ave Groton SD 57445 Grp Plumbing 646 Lawnridge Ave SE Huron SD 57350 GTI 2729 Deford Mill Rd Hampton Cove AL 35763 GTI 2729 Deford Mill Rd Hampton Cove AL 35763 Gustav Reimer c/o Northwestern Energy 40 East Broadway Butte MT 59701 H & H Enterprises P.O. Box 437 Black Eagle MT 59414 H&H Enterprises Of Montana, Inc. 280 Wind Cave Circle Billings MT 59102 Hamann Bros. Hamann, Gordon And Russell R.R. 1 Box 251 Estelline SD 57234 Hanks Fire Service Inc. P.O. Box 7363 Great Falls MT 59406 Hanson County P.O. Box 500 Alexandria SD 57311-0500 Hanson Indep 40 P.O. Box 490 Alexandria SD 57311-0490 Harlan Puncochar 3070 Saint Paul Rd. Grand Island NE 68801 Harold H. Hoy 2928 Chapman Lane Billings MT 59102 Harold Henning Route 1 Alda Nebraska 68810 Harold Henning Route 1 Alda Nebraska 68810 Harp Line Constructors Company Highway 2 West P.O. Box 8688 Kalispell MT 59904 Harringtons Floor Covering Inc. 1432 Harrison Ave Butte MT 59701 Harrison High School P.O. Box 7 Harrison MT 59735 Harr's Service Phillips 66 Box 670 Freeman SD 57029 Hartford Life And Accident Insurance Company Jennifer Ryan P.O. Box 2999 200 Hopmeadow St Hartford Ct 06089

Harvies Hotshot Service & Trucking Inc. Andrew Harvie P.O. Box 2175 Cut Bank MT 59427 Havre Pipeline Company, LLC Gas Control 410 17th Street Suite 1400 Denver CO 80202

Hawley Oil Company 840 Conrad-Dupuyer Rd Conrad MT 59425 H-D Electric Co-Op 423 3rd Ave SE Clear Lake SD 57226 Health Advantage Company Jeff Chutz 5600 W Maple Rd A140 West Bloomfield MI 48322 Health Infonet Inc. Robert L Hunter 1156 16th Street West Billings MT 59102 Heartland Communications Inc. 1st And Pine P.O. Box 48 Kimball SD 57355 Heartland Energy Services, Inc. Attn: Richard Friedman 802 W. Broadway Suite 301 Madison WI 53713 Heartland Gain Fuels P.O. Box 1435 Aberdeen SD 57402-1435 Heartland Grain Fuels Ld 694 West Park Ave. NW Huron SD 57350 Heath Consultants Inc. P.O. Box 1267 West Sacramento CA 95691-1267 Heather Wilcox 5481 South Federal Circle Apt G 303 Littleton CO 80123 Helen V. Peterson Schuette Box 313 Cut Bank MT 59427 Helena Sand & Gravel Inc. P.O. Box 5960 Helena MT 59604 Helena Urgent Care Barb 33 Neill Ave Helena MT 59601

Henry D. Bedford Jr and Ka Bedford 664 Fattig Creek Rd Roundup MT 59072 Henry Vanderloos 712 6th Avenue Laurel MT 59044

Hertz Rent A Car (East Ridge Rentals) Marty Struznik 226 E Broadway Butte MT 59701 Hewlett-Packard Company 8000 Foothills Blvd., Ms. 5634 Roseville CA 95747-5634

High Country Equipment Inc. P.O. Box 498 Red Lodge MT 59068

High Mountain Inspection Services Inc. Bill Frazier P.O. Box 1508 Mills WY 82644 Highland Hearing Center Patricia Ingalls 1369 Harrison Ave Butte MT 59701 Highmore Office 322 Eastern Ave. Brookings SD 57006

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 27 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Hilda M. Carlson 191 Vineyard Road Warwick RI 02889 Hill County Courthouse 315 4th St. Havre MT 59501 Hill County Electric Coop 2121 Hwy 2 NW Havre MT 59501 Hill County Electric Coop 2121 Hwy 2 NW Havre MT 59501 Hill County Electric Coop 2121 Hwy 2 NW Havre MT 59501 Hill County Electric Coop 2121 Hwy 2 NW Havre MT 59501 Hill County Electric Coop 2121 Hwy 2 NW Havre MT 59501 Hinsdale High School P.O. Box 398 Hinsdale MT 59241 HKM Engineering Inc. P.O. Box 3588 Butte MT 59702-3588 Holcim Jim Gilbert 4070 Trident Road Three Forks MT 59752 Holiday Inn 2500 6th Street Brokkings SD 57006 Holiday Inn E Hwy 12 Aberdeen SD 57401 Holly A. Wilcox 1564 East Girard Place Apt 1036 Englewood CO 80113 Holnam, Inc. Energy Specialist 4070 Trident Road Three Forks MT 59752 Homeword Inc. 127 Higgins Missoula MT 59802 Hornady Mfg, Company 3625 Old Potash Highway Grand Island NE 68801 Horton And Associates 3713 Creekwood Rd Missoula MT 59802 Houlihan Lokey Howard & Zukin Financial Advisors Inc. P Eric Siegert 225 S Sixth St 4950 Minneapolis MN 55402 Howard Carter BDW Partnership Pine Creek QF Jay R. Bingham 1502 Millbrook Way Bountiful UT 84010 Howard Good Samaritan W. Hazel Ave. Howard SD 57349 Howard Industries Nina Hodl 9317 NE Hwy 99 Suite 0 Vancouver WA 98665-8900 Howard Public School 500 N. Section Line Howard SD 57349 Hub Area Multi District 1114 S Washington St Aberdeen SD 57401 Hub Area Multi District 640 SW 9th Ave Aberdeen SD 57401 Hub Area Multi District 640 SW 9th Ave Aberdeen SD 57401 Hub Area Multi District 640 SW 9th Ave Aberdeen SD 57401 Hub City 2914 Industrial Way Aberdeen SD 57401 Hub City P.O. Box 937 Aberdeen SD 57402-0937

Hub City Division Safeguard Industries Industrial Park Aberdeen SD 57401 Hub City Inc. Attn: Phil Mitzel P.O. Box 1089 Aberdeen SD 57402-1089 Hughes County 104 E Capital Pierre SD 57501 Human Asset Technologies Matthew Park 115 Flanders Rd Westborough MA 01581 Hunt Technologies Kathy Rono 6436 County Rd 11 Pequot Lakes MN 56472 Hunter Brothers Construction Inc. P.O. Box 3119 Butte MT 59702 Huron Nursing Home 1345 Michigan Ave SW Huron SD 57350 Huron Overhead Door Company 37 2nd St SE Huron SD 57350 Huron Regional Medical Center 172 4th St SE Huron SD 57350 Huron School District 2-2 88 3rd St. SE Huron SD 57350 Huron Welding Shop 65 Second St SE Huron SD 57350 Huron Welding Shop 65 Second St SE Huron SD 57350 Huron Welding Shop 65 Second St SE Huron SD 57350 Hutchinson County 140 Euclid St. Oliver SD 57052 Hyde County NE Commercial Ave. Highmore SD 57345-0260

Hydrometrics Inc. Mike Wignot Mike Wignot 2727 Airport Rd Helena MT 59601 IBM Credit Corporation, C/O Bankruptcy Coordinator 13800 Diplomat Farmers Branch TX 75234 IBM Credit Corporation, C/O Bankruptcy Coordinator 13800 Diplomat Farmers Branch TX 75234 IBP, Inc. P.O. Box 515 Dakota City NE 68731 IBP, Inc. Po Box 515 Dakota City NE 68731

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 28 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country ICF Information Technology 9300 Lee Highway Fairfax VA 22031 Ida F. Vanderloos c/o Dorothy Vanderloos 712 6th Ave. Laurel MT 59044 Idacorp Energy Contract Administration P.O. Box 4127 Boise ID 83711 Idaho Power General Manager, Power Supply P.O. Box 70 Boise ID 83707 Idaho Power Company Robert Gumm P.O. Box 70 Boise ID 83707 6955 Union Park Center - Illinova Energy Partners, Inc. William Birnel Director Of Operations Suite 300 Midvale UT 84047 6955 Union Park Center - Illinova Energy Partners, Inc. William Birnel Director Of Operations Suite 300 Midvale UT 84047

Independent Inspection Company Bob Bricker P.O. Box 1776 Havre MT 59501 Independent Inspection Company P.O. Box 1776 Havre MT 59501-1776 Independent Inspection Inc. V#102297 P.O. Box 1776 Billings MT 59103 Independent Record P.O. Box 4249 Helena MT 59604 Industrial Automation Consulting Inc. 118 Main St P.O. Box 810 Three Forks MT 59752 Industrial Towel & Cover Supply P.O. Box 1217 Livingston MT 59047 Integrated Payment Systems, Inc., Mark Martellaro 6200 South Quebec St. Greenwood Village CO 80111 Intergraph Corporation 170 Graphics Drive Madison AL 35758

Intergraph Corporation 22494 Network Place Chicago IL 60673 Intergraph Corporation 22494 Network Place Chicago IL 60673 Intergraph Mapping & Geospatial 170 Graphics Dr Madison AL 35758 Intergraph Mapping & Geospatial 170 Graphics Dr Madison AL 35758 International Association Of Mechanists And Aerospace Workers Attn: Virginia Ginger Winston Business Representative 156 W Granite St Butte MT 59701 International Brotherhood Of Electrical Workers Local 44 Don Hendrickson 1901 S Montana P.O. Box 3467 Butte MT 59702

International Brotherhood Of Electrical Workers System Council U-26 Steve Miller 1125 15th Street N.W Sioux Falls SD 57104 Interstate Power Company 2001 S Federal Ave. Mason City IA 50401 Interstate Power Company 2001 S Federal Ave. Mason City IA 50401 Interstate Structures, Inc. Jerry Kincheloe 2180 25 Road Kearney NE 68847 Intouch Solutions Sara Hedges 2610 W Main St Bozeman MT 59718 Intouch Solutions 2610 W Main St Bozeman MT 59718 Invensys C/O Pacific Metering, Inc. Rodney Walker 34304 SW Ladd Hill Rd Wilsonville OR 97070 Iowa Public Service Co. P.O. Box 778 Sioux City IA 51102 Iowa Public Service Co. P.O. Box 778 Sioux City IA 51102 Iowa Public Service Co. P.O. Box 778 Sioux City IA 51102 It Infusion: Making It Better 7040 N Port Washington Rd Milwaukee WI 53217-3838 Itron Inc. Attn: Contract Administrator 2818 N Sullivan Rd Spokane WA 99216 Itron Inc. Attn: Contract Administrator 2818 N Sullivan Rd Spokane WA 99216 Itron, Inc. Nelson Briggs 2818 Sullivan Rd Spokane WA 99215 Itron, Inc. Attn: Contract Administrator 2818 N Sullivan Rd Spokane WA 99216 Itron, Inc. Attn: Contract Administrator 2818 N Sullivan Rd Spokane WA 99216 Itron, Inc. Attn: Contract Administrator 2818 N Sullivan Rd Spokane WA 99216 Itron, Inc. 2818 N Sullivan Rd Spokane WA 99216 Itron, Inc. 2818 N Sullivan Rd Spokane WA 99216 J & J Cleaning Services (Bozlee) Joan Bozlee 181 Canyon View Dr. Livingston MT 59047-9622 J M Management Inc. d/b/a D & S Fencing Inc. 601 Garden Ave. P.O. Box 4091 Butte MT 59702

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 29 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country J. W. Hoy 2024 Wyndham Park Dr. Billings MT 59102-8116

Jack & Helen A Young Rt 73, Box 2 Lloyd Mt 59535 Jack And Ronna Schaefer d/b/a Missouri Valley Cable TV, Inc. Jack Shaefer Box 57 Mitchell SD 57301 Jack And Ronna Schaefer d/b/a Missouri Valley Cable TV, Inc. Jack Shaefer Box 57 Mitchell SD 57301 Jack And Ronna Schaefer d/b/a Missouri Valley Cable TV, Inc. Jack Shaefer Box 57 Mitchell SD 57301 Jais Refrigeration And Air Conditioning LLC P.O. Box 4476 Butte MT 59701 Jaks Environmental Products And Services Anthony Sibert P.O. Box 3215 Kalispell MT 59903 James Falvey 1005 16th Butte MT 59701 James Mertens RR2 Box 583 Milbank SD 57252 James Talcott Construction Inc. P.O. Box 2493 Great Falls MT 59403 James Valley Ethanol LLC Hwy. 12 Groton SD 57445 James Valley Ethanol LLC Hwy. 13 Groton SD 57445

James Valley Farmers Elevator Co. #1 102 R.R. Ave. P.O. Box 195 Groton SD 57445-0195

James Valley Farmers Elevator Co. #4 P.O. Box 195 Groton SD 57445 James Valley Farmers Elevator Co. 2 & 3 15 S. Main St. P.O. Box 195 Groton SD 57445 Jamir Reclamation Inc. P.O. Box 523 Brookings SD 57006 Janice Blair Olsen c/o Bank One P.O. Box 2605 Ft Worth TX 76113

Jares Fence Co Inc. Bennie Jares, President 8725 Story Rd Billings MT 59101 Jasso, Meshelle L. 23005 Western Ave. Yankton SD 57078 Jay Fortune Construction Inc. P.O. Box 293 Butte MT 59703

JDL Construction Company Inc. James Madison 401 S Main P.O. Box 168 Sheridan MT 59701 Jefferson County, County Commissioner P.O. Box H Boulder MT 59632

Jenni Lawrence And Esther Route 2, Box 2228 Lewistown MT 59457 Jessie G Adams d/b/a Eagle Landscaping 542 Klenck Billings MT 59101 Jim And Joan Magone d/b/a J & J Cleaning Service 181 Canyon View Dr. Livingston MT 59047-9622 Jim Brough Construction 5415 Highway 2 East Havre MT 59501 Jim Brough Construction 5415 Highway 2 East Havre MT 59501 Jim Field Marketing David Rairigh 901 NW 5th Ave Fort Lauderdale FL 33311

Jim Gilman Excavating Inc. 3105 Kossuth Butte MT 59701 Joan E. Hughes 270 Sulky Ln. Kalispell MT 59901 Joan Mckee Barnes 15576 Washington Ave NE Bainbridge Island WA 98110 Jocelyn Stoller Agent 111 West Huron Chicago IL 60610

Jody L. Budde (Cascade Creek) Mr. James Sievers 2292 East River Road Livingston MT 59047-9144

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 30 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Joe Boyer d/b/a Boyer Landscape Design 1903 Ogden Anaconda MT 59711 Joe Wolfe - Operations 919 South 7th Street; Suite 405 Bismark ND 58504 Joe Wolfe - Operations 919 South 7th Street; Suite 405 Bismark ND 58504 Joel O'Brien RR 4 P.O. Box 1 Milbank SD 57252 John Balock d/b/a Twin Bridges TV P.O. Box 417 Twin Bridges MT 59754 John Blocker (Owner) Route 1 Box 275 Grand Island NE 68803 John Blocker (Owner) Route 1 Box 275 Grand Island NE 68803 John Forkan Jr. Business Manager Local 41 P.O. Box 3172 Butte MT 59702 John Hancock Mutual Life Insurance Company John Hancock Place P.O. Box 111 Boston MA 02117 John James Wilcox 316 West 17th Street Apt #1 Cheyenne WY 82001 John M And Rudy S Cicon d/b/a Cicon & Associates P.O. Box 541 Chester MT 59522-0541 John Michael Krop 1811 Chinaberry Court Mitchellville MD 20721 John Niedfelt 1120 E Bismark Rd. Grand Island NE 68801 John Pike Construction P.O. Box 1024 Chinook MT 59523 John Robert Wilcox P.O. Box 309 Troy MT 59935-0309 John Walden 431 West Mercury P.O. Box 3038 Butte MT 59701 Johnson Brothers Excavation P.O. Box 185 Madison MD 57042 Jonathan Blair Trust c/o Bank One P.O. Box 2605 Fort Worth TX 76113 Jongejeugd, Larry P.O. Box 771 Platte SD 57369 Jordan Contracting Inc. P.O. Box 668 Anaconda MT 59711 Jordon Patterson d/b/a Patterson Lawn Care 1616 Juniper Dr Havre MT 59501

Joseph R Davis d/b/a Davis Excavation 27 Tebay Lane Whitehall MT 59759 Joseph R Uckert RR 2 Box 139 Clear Lake SD 57226 Joseph V. & Carmel E. Taule P.O. Box 264 Sunburst MT 59482 JPower Inc. Attn: John Jaffray 5040 Norwest Center 90 South 7th Street Minneapolis MN 55402 JS Corp d/b/a Artmill 2700 Radio Way Missoula MT 59801 JTL Group Inc. P.O. Box 790 Missoula MT 59806 JTL Group Inc. 3131 US Highway 2 East Kalispell MT 59901 Juanita Ewing Micken c/o Darrell J. Micken 515 Lexington Dr. Bozeman MT 59715 Juanita K. Tillotson c/o Northwestern Energy 40 East Broadway Butte MT 59701 Julie L. Coleman P.O. Box 21904 Billings MT 59104-1904 K & M Janitorial 1621 Yale Ave Butte MT 59701 K Mart Store 7023 1815 Sixth Avenue Southeast Aberdeen SD 57401 K Mart Store 7023 1815 Sixth Avenue Southeast Aberdeen SD 57401 K O Lee Company 200 S Harrison Aberdeen SD 57401 K O Lee Company P.O. Box 1416 Aberdeen SD 57402-1416 K2 America P.O. Box 486 Cut Bank MT 59427 K2 America Corporation P.O. Box 486 Cut Bank MT 59427 Kalispell Unit Hourly Gas Employees Mr Tom Vanek P.O. Drawer 9888 Kalispell MT 59904 Kaneb Pipe Line Operating Partnership, L.P. Suite 550 100 North Broadway Witchita KS 67202 Kansas-Nebraska Gas Company 301 E Ossipee St. Norcatur KS 67653 Kari Stormo 313 W 29th St. Sioux Falls SD 57105 Kathy Tieszen Marion Interior Design P.O. Box178 Marion SD 57043 Kaufman Trust Northwest Capital Management TTE P.O. Box 30058 Billings MT 59117 Kaufmanns Overhead Door & Awning Rob Kaufman/Patrick Donely 33 Barnet Lane Bozeman MT 59715

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 31 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Keesler S S V Store 621 SE 6th Ave Aberdeen SD 57401 Keesler's 621 SE 6th Ave Aberdeen SD 57401 Keller, Earl P. O. Box 483 Menno SD 57045-0483 Kelly And Dana Anderson 124 Rendezvous Trl Livingston MT 59047 Kelly Keintz d/b/a Fence Link P.O. Box 3401 Missoula MT 59806 Ken Petersen - VP RTO West RTO West P.O. Box 70 Boise ID 83707 Kenneth P. Williams 17 Lariat Loop Bozeman MT 59715 Ken's Super Store 2201 SE 6th Ave Aberdeen SD 57401 Kessler's 621 SE 6th Ave Aberdeen SD 57401 Kevin Anderson Box 32 Andorer SD 57402 Kevin Fournier d/b/a Fournier Decorating 1855 Garrison Ave Butte MT 59701 201 W. North River Drive, Kevin Holland Avista Suite 610 Spokane WA 99201 Kevin Pederson RR 2 Box 402 Milbank SD 57252-9308 Kevin Smidt P. O. Box 365 Menno SD 57045-0365 Kimball Cable TV E.M. Parsen P.O. Box 1043 Pierre SD 57501 Kimball Cable TV E.M. Parsen P.O. Box 1043 Pierre SD 57501

King, Todd 72255 Laskey Sky Valley CA 92241 Kingsbury County 202 2nd St. SE De Smet SD 57231 Kingsbury Electric 511 5th St SW Drawer E Desmet SD 57231 Kingsbury Memorial 700 SE 4th Street Lake Preston SD 57249 Klueber, Roland RR 1 Box 163 Canistota SD 57012 KM Construction Co Inc. P.O. Box 1341 Bozeman MT 59701 K-Mart Corp 3907 3535 West 13th Grand Island NE 68801 Knife River Coal Mining Company 1915 N Kavaney Dr Bismarck ND 58501 Knife River Coal Mining Company 1915 N Kavaney Dr Bismarck ND 58501 Knife River Coal Mining Company 1915 N Kavaney Dr Bismarck ND 58501 Knife River Coal Mining Company 1915 N Kavaney Dr Bismarck ND 58501 Knife River Coal Mining Company 1915 N Kavaney Dr Bismarck ND 58501 Knife River Coal Mining Company 1915 N Kavaney Dr Bismarck ND 58501 Knife River Coal Mining Company 1915 N Kavaney Dr Bismarck ND 58501 Knife River Coal Mining Company 1915 N Kavaney Dr Bismarck ND 58501 Knife River Coal Mining Company 1915 N Kavaney Dr Bismarck ND 58501 Knife River Coal Mining Company 1915 N Kavaney Dr Bismarck ND 58501 Knife River Coal Mining Company 1915 N Kavaney Dr Bismarck ND 58501 Knife River Coal Mining Company 1915 N Kavaney Dr Bismarck ND 58501 Knife River Coal Mining Company 1915 N Kavaney Dr Bismarck ND 58501 Knife River Coal Mining Company 1915 N Kavaney Dr Bismark ND 58501 Knife River Coal Mining Company 1915 North Kavaney Drive Bismarck ND 58501 KR Office Interiors Inc. 2009 Harrison Ave Butte MT 59701 Kronebusch Electric Inc. 120 N Front St. Conrad MT 59425 Krug & Sons Inc. 24750 Hwy. 212 Laurel MT 59044 L.B. Nichols 821 St. Mark Sp4 Redding CA 96003 Lafarge North America 5400 W Marginal Way SW Seattle WA 98124 Lagerquist Corporation 3109 W 41st., #101 Sioux Falls SD 57105 Lagerquist Elevators 3109 West 41st., Ste. 101 Sioux Falls SD 57105

Lake Central (Madison Middle School) 800 NE 9th Madison SD 57042 Lake County 200 E Center St. Madison SD 57042

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 32 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Lake Norden Creamery - Davisco Int 408 Oak Street Box 66 Lake Norden SD 57248 Lake Norden Creamery - Davisco Int P.O. Box 169 Lake Norden SD 57248 Lake Preston Co-Op 100 2nd NW Lake Preston SD 57249 Lake Preston Coop Elevator 107 Chase NE Desmet SD 57231

Lake Preston Development Corporation 327 Main Avenue North P.O. Box 215 Lake Preston SD 57249 Lake Preston Health Care Tealwood Inc. 700 SE 4th Street Lake Preston SD 57249 Lake Preston Health Care Tealwood Inc. 700 SE 4th Street Lake Preston SD 57249 Lake Preston Public School 303 SE 1st Lake Preston SD 57249 Lake Region Electric 1212 N Main St Webster SD 57274 Lakewood Mall 3315 SE 6th Ave Aberdeen SD 57401 Lakewood Mall 11506 Nicholas St., Ste. 200 Omaha NE 68154-4421 Lamar Outdoor Advertising, Inc Po Box 151 Helena MT 59624

Land & Water Consulting Inc. Barry Dutton / Charles Van Dam P.O. Box 8254 Missoula MT 59807 Landmann-Jungman 600 Billars Scotland SD 57059 Land-O-Lakes 111 Kasan Ave Volga SD 57071 Land-O-Lakes Agricultural Service 115 E. Highway 14 Volga SD 57071 Lands Energy Steve Lewis 2366 Eastlake Ave. East Suite 311 Seattle WA 98012

Larry And Gary Jongejeugd P.O. Box 771 Platte SD 57369 Larry J Jaeger d/b/a Highland Repair 2000 Waterline Rd Butte MT 59701 Larson Digging Incoroporated 20853 418th Avenue Iroquois SD 57353 Laslovich Construction Tony Laslovich 112 Mountain View Homes Anaconda MT 59711-1616 Laverne Mennenga Rt. 2 Box 72 Castlewood SD 57223 Lavina High School P.O. Box 146 Lavina MT 59046 Lavonne K. Polzien 2321 S. Fifth Ave. Sioux Falls SD 57105-4003 Lawrence Blair c/o Bank One P.O. Box 2605 Fort Worth TX 76113

Legacy Consulting Services LLC 403 West Quartz St Box 75 Butte MT 59701-9156

Legato Systems, Inc. 3210 Porter Dr Palo Alto CA 94304 Leo Fitzgerald P.O. Box 152 Marion SD 57043 Leon Plastics Inc. P.O. Box 1728 Grand Island NE 68802 Leon Plastics, Inc. P.O. Box 1728 Grand Island NE 68802 Leroy Meyer Route 3 Box 239 Grand Island NE 68801 Lewis Manufacturing & Construction Inc. Mary Ann Lewis P.O. Box 250 Bridger MT 59014-0001 Lewis Manufacturing And Construction Inc. P.O. Box 250 Bridger MT 59014-0001 LH Residential LLC 7403 Highline Ct Missoula MT 59808 Liberty Cleaners P.O. Box 1000 Kearney NE 68848-1000 Liebert Global Services Liebert Customer Service & Support 610 Executive Campus Dr Westerville OH 43082

Liebert Global Services 610 Executive Campus Dr Westerville OH 43082 Liebert Global Services 610 Executive Campus Dr Westerville OH 43082 Lien Transportation P.O. Box 40 Aberdeen SD Lien Transportation Company P.O. Box 40 Aberdeen SD 57402-0040

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 33 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

Life Care Services Pam Goodrich P.O. Box 8839 Missoula MT 59807 Lincoln Telephone Company, Inc. Hrc 50 Box 1 Lincoln MT 59639 Lindsay Drilling And Contracting Inc. Terry Lindsay P.O. Box 67 Clancy MT 59634 Linesoft Corporation Attn: Chief Financial Officer 12310 E Mirabeau Parkway Spokane WA 99216 Linesoft Corporation Attn: Chief Financial Officer 12310 E Mirabeau Parkway Spokane WA 99216 Linesoft Corporation Attn: Chief Financial Officer 12310 E Mirabeau Parkway Spokane WA 99216 Linesoft Corporation 12310 E Mirabeau Parkway Spokane WA 99216 Local Union No 44 Of The International Brotherhood Of Electrical Workers Business Manager / Financial Aflcio Attn: Stan Dupree Secretary P.O. Box 3467 Butte MT 59702-3467 Lockton Companies Inc. 444 W 47th St Suite 900 Kansas City MO 64112 Lockton Insurance Agency 444 W 47th St., Suite 900 Kansas City MO 64112-1906 Loel Lust Chevrolet Attn: Leo Heupel 1314 SW 6th Ave Aberdeen SD 57401 Loel Lust Chevrolet Box 37 Aberdeen SD 57402-0037 Lombardi & Johnson Roofing Inc. P.O. Box 8916 Missoula MT 59807

Los Angeles Dept. Of Water And Power P.O. Box 111 Los Angeles CA 90051 4110 N. Scottsdale Rd, Suite Louis Dreyfus Electric Power Inc. Attn: Steven J. Lewis 250 Scottsdale AZ 85251-3919 Louise C. Whitcomb 2351 Solomon Ave. Apt. 383 Billings MT 59068 Louise Kero 125 Warren Anaconda MT 59711 100 Interstate Highway 45 Louisiana Pacific Corporation Regional Supply Manager North P.O. Box 3107 Conroe TX 77305 Louisiana-Pacific Corporation 100 Interstate Hwy 45 North P.O. Box 3107 Conroe TX 77305 Louisiana-Pacific Corporation 100 Interstate Hwy 45 North P.O. Box 3107 Conroe TX 77305 Lowell And Sherry Smith 183 Middle Burnt Fork Rd Stevensville MT 59870 Lowell Henry Nichols c/o Northwestern Energy 40 East Broadway Butte MT 59701 Lucas, Ken Modern Woodmen Of America P.O. Box 694 Platte SD 57369 Lucia Weaver 1116 Chouteau Ave. Helena MT 59601 Luikens, Dale A. 551 Park Street Menno SD 57045 Luzenac America Inc. Jim Gilbert 4070 Trident Road Three Forks MT 59752 Luzenac America Inc. 2150 Bench Rd Three Forks MT 59752 Luzenac America, Inc. John Godla 767 Old Yellowstone Trail Three Forks MT 59752 Lyle Sign Co. 500 SE 5th St Desmet SD 57231 Lyle Sign Co. 500 SE 5th Desmet SD 57231 Lynch Flying Service Inc. d/b/a Edwards Jet Center 1691 Aviation Place Billings MT 59105 Lynuxworks Attn: Sales Admin 5050 Quorum Dr 700 Dallas TX 75240 Lynuxworks Linda Lewis 5050 Quorum Dr. #700 Dallas TX 75240

M&G Manor, Dave Weber P.O. Box 913 Parkston SD 57366 Mac Bonnie Franks Rte 2 P.O. Box 1133 Avinger TX 75630 Machinery Power & Equipment 5200 Southgate Drive Billings MT 59101 Maddox Roofing & Construction Inc. Linda Maddox P.O. Box 6867 Great Falls MT 59406 Madison Community Hospital 917 N Washington Avenue Madison SD 57042 Madison Middle School Lake Central School Dist 39-2 800 NE 9th St Madison SD 57042 Madsen Door Service, Inc. d/b/a Overhead Door Company Of So. Montana P.O. Box 30675 Billings MT 59107 Magic City Cleaning Service 514 West Morase St Lewistown MT 59457

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 34 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Malcolm D. McAlpine P.O. Box 307 Valier MT 59486-0307 Mallard Cablevision LLC 101 S Washington El Campo. TX 77437 Malta High School P.O. Box 670 Malta MT 59538 Manor Care Inc. 410 NW 8th Ave Aberdeen SD 57401 Manor Motel E Hwy 12 Milbank SD 57252 March Engineering Inc 9220 E Hodgeman Canyon Dr Bozeman MT 59715-8520 Marci Albrecht Marion Interior Design P.O. Box 178 Marion SD 57043 Margaret Waltner P.O. Box 396 Scotland SD 57059-0396 Margaretj. Kelleher 9 La Cam Rd. Thousand Oaks CA 91320-3834 Margarite Marie Britton 5801 Pebble Beach Las Vegas NV 89108 Marianne Gardner 40209 N E 119th Ave. Amboy WA 98601 Marias Health Care P.O. Box 990 Shelby MT 59474 Marias River Gas Company P.O. Box 7033 Billings MT 59103 Marie McAlpine 585 Andrew Dr Burlington Hills Estate Burlington WA 98233 Marilyn Johnson 16070 476th Ave. Labolt SD 57246 Marion Ind. School P.O. Box 207 Marion SD 57043-0207 Mark Wending 100 W Main Ave Bryant SD 57221 Marquette Bank P.O. Box 848 Huron SD 57350-0848 Marsh USA Inc. Attln Marcy Korbel 333 S 7th St., Suite 1600 Minneapolis MN 55402 Marsh USA Inc. 333 South 7th St Sharon Albrecht Minneapolis MN 55402 Marsh USA Inc. 333 South 7th St Minneapolis MN 55402 Marsh USA Inc. 333 South 7th St Minneapolis MN 55402 Marsh USA Inc. 333 South 7th St Minneapolis MN 55402 Marshall County 911 Vander Horck St. Britton SD 57430 Martha E. Cummings Zehr 3607 West Lawrence Lane Phoenix AZ 85021 Martin And Associates 1515 N Sanborn Mitchell SD 57301 Marty Indian School L B Dillon Box A Marty SD 57361

Matriarch Construction, Craig Stevens P.O. Box 472 Laurel MT 59044 Maurice Harshman d/b/a Harshman Electric P.O. Box 1293 Chinook MT 59523

Maxim Technologies Inc. Jeff Jackson P.O. Box 4669 Helena MT 59604 Maxwell 42805 Maxwell Rd. Scotland SD 57059 Maxwell 42805 Maxwell Rd. Scotland SD 57059 McCain Foods Western Inc. P.O. Box 100 Clark SD 57225 McCook Feed & Fert P.O. Box 308 Canistota SD 57012-0308 Mcentee, Charles C. R.R. #4 Mitchell SD 57301 Mcgree Corporation James Mcgree P.O. Box 4076 Butte MT 59702 Mcleodusa Telecommunications Services, Inc. 6400 C St SW P.O. Box 3177 Cedar Rapids LA 52406 MDU Resources Group 400 North Fourth Street Bismarck ND 58501 Meadow Gold Dairies Inc. 312 3rd Avenue South Great Falls MT 59405 Measure Now/Prisym Solutions David G Ische 211 N 1st St Suite 280 Minneapolis MN 55401 Melstone Public School P.O. Box 97 Melstone MT 59054 Menard Inc. 3620 West State Grand Island NE 68803 Menards Inc. 3821 SE 6th Ave Aberdeen SD 57401 Menards Inc. 3821 SE 6th Ave Arlington SD 57401 Menno School District 33-2 P.O. Box 346 Menno SD Menno School District 33-2 P.O. Box 346 Menno SD

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 35 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Mercer Mary Gobes 800 Lasalle Ave Suite 2100 Minneapolis MN 55402-2012 Mercury Advertising Bob Jones 22 South Grand Ave Bozeman MT 59715 Mercury Cleaners Attn: Kurtes Kruger 611 South Main St Aberdeen SD 57401 Merrick Machine Co Box 188 Alda NE 38810 Meter Devices Company, Inc. John Gagnon P.O. Box 6832 Sta. B Canton OH 44706 Methodist Church 511 N. Elm Grand Island NE 68801

Metso Automation Scada Solutions, Inc. Arlin Ginther 10333 Southport Road SW Calgary AB T2W 3X6 Canada MFS/York Division Tic United Corp. 2928 East Highway 30 Grand Island NE 68801 Michael J. Mccourt 305 High Park Way Missoula MT 59803 Mick Dockter Hrc. 66, Box 4 Kimball SD 57355 Micken Hearing Services 1009 N 7th St Bozeman MT 59715 Micken Hearing Services 1009 N 7th St Bozeman MT 59715 Micronet Communications Inc. Attn: Contracts Department 720 Avenue F, Suite 100 Plano TX 75074 Microsoft Corporation Law And Corporate Affairs Attn: Select Attorney One Microsoft Way Redmond WA 98052

Microsoft Corporation Attn: Select Volume Licensing, Dept 551 One Microsoft Way Redmond WA 98052

Microsoft Enterprise License Agreement One Microsoft Way Bldg 2213 Redmond WA 98053 Mid States Printing Inc. 1216 S Main St Aberdeen SD 57401 Midcom 701 Enterprise St N Aberdeen SD 57402 Midcom 701 Enterprise St N Arlington SD 57402 Midcom 701 Enterprise St N Arlington SD 57402 Midcontinent Broadcasting Co. Mr. Joe Floyd Sioux Falls SD 57102

Midcontinent Cable Systems Co Of SD Mr. Claude Kraft P.O. Box 910 Aberdeen SD 57401

Midcontinent Cable Systems Co Of SD Mr. Claude Kraft P.O. Box 910 Aberdeen SD 57401

Midcontinent Cable Systems Co Of SD Mr. Claude Kraft P.O. Box 910 Aberdeen SD 57401

Midcontinent Cable Systems Co Of SD Mr. Claude Kraft P.O. Box 910 Aberdeen SD 57401

Midcontinent Cable Systems Co Of SD Mr. Claude Kraft P.O. Box 910 Aberdeen SD 57401

Midcontinent Cable Systems Co Of SD Mr. Claude Kraft P.O. Box 910 Aberdeen SD 57401

Midcontinent Cable Systems Co Of SD Mr. Claude Kraft P.O. Box 910 Aberdeen SD 57401

Midcontinent Cable Systems Co Of SD Mr. Claude Kraft P.O. Box 910 Aberdeen SD 57401

Midcontinent Cable Systems Co. Of SD Mr. Claude Kraft P.O. Box 910 Aberdeen SD 57401

Midcontinent Cable Systems Co. Of SD Mr. Claude Kraft P.O. Box 910 Aberdeen SD 57401 Mid-Rivers Telephone Cooperative 105 Seven Mile Dr Glendive MT 59330 Midstate Printing 4820 Capital Ave Aberdeen SD 57402 Midstates Printing 1216 S Main St Aberdeen SD 57401 Midstates Printing 1216 S Main St Aberdeen SD 57401 Midstates Printing 4820 Capital Ave Aberdeen SD 57401 Mike Baker d/b/a Baker Excavating P.O. Box 291 Whitehall MT 59759-0291

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 36 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Mike Dimich Jr. 3803 Palisades Park Drive Billings MT 59102 Mike P. Hudak P.O. Box 161 Red Lodge MT 59068 Mike Panoweez 1717 Birdie Lane Grand Island NE 68801 Mike Smidt P. O. Box 26 Menno SD 57045-0026 Mildred Evans 2215 West Koenig Grand Island NE 68801 Milford Municipal Utilities 806 N. Ave. #3 Milford IA 51351 Millard Refrigerated Services 205 E. Roberts Grand Island NE 68803 Miller & Paine 13th Street North Webb Rd 4100 Grand Island NE 68801 Miller Mechanical Inc. Terry Miller 1121 East 5th St 205 N Gold Anaconda MT 59711 Miller, Lois P.O. Box 302 Chamberlain SD 57325-0302 Milton H. Kuhleman Estate c/o Kelly Kuhleman 303 South Heinbolt Denver CO 80209 Mineral County Mineral County P.O.Box 550 Superior MT 59872 Minerals Management Service Royalty Management Program P.O. Box 5810 TA Payor Code 38740 Denver CO 80217-5810 Miners Coulee Gas Gathering System, Ltd 125 Main Street Shelby MT 59474

Minnesota Dakota Generating Company Minnesota Dakota Generating Fergus Falls MN Minnesota Mining & Mfg Co P.O. Box 33331 St. Paul MN 55133 Minnesota Mining And Manufacturing Co 3-M Co 601 22nd Avenue S. Brookings SD 57006 Minnesota Power C O Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company 30 W. Superior Street Duluth MN 55802 Minnesota Power & Light Company 30 W. Superior Street Duluth MN 55802 Minnesota Power & Light Company 30 W. Superior Street Duluth MN 55802 Minnesota Power & Light Company 30 W. Superior Street Duluth MN 55802 Minnesota Power & Light Company 30 W. Superior Street Duluth MN 55802 Minnesota Power & Light Company 30 W. Superior Street Duluth MN 55802 Minnesota Power & Light Company 30 W. Superior Street Duluth MN 55802 Minnesota Power & Light Company C O Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company c/o Secretary 30 W Superior St Duluth MN 57350 Minnesota Power & Light Company Third Sheet And Dakota Avenue South Huron SD 57350 Minnesota Power & Light Company 400 North Fourth Street Bismarck ND 58502 Minnkota Power Cooperative Inc. Box 1318 Grand Fork ND 58201 Minnkota Power Cooperative Inc. Box 1318 Grand Forks ND 58201 Minnkota Power Cooperative Inc. Box 1318 Grand Forks ND 58201 Minnkota Power Cooperative Inc. Box 1318 Grand Forks ND 58201

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 37 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Minnkota Power Cooperative Inc. Box 1318 Grand Forks ND 58201 Minnkota Power Cooperative Inc. Box 1318 Grand Forks ND 58201 Minnkota Power Cooperative Inc. Box 1318 Grand Forks ND 58201 Minnkota Power Cooperative Inc. Box 1318 Grand Forks ND 58201 Minnkota Power Cooperative Inc. Box 1318 Grand Forks ND 58201 Minnkota Power Cooperative Inc. Box 1318 Grand Forks ND 58201 Minnkota Power Cooperative Inc. Box 1318 Grand Forks ND 58201 Minnkota Power Cooperative Inc. Box 1318 Grand Forks ND 58201 Minnkota Power Cooperative, Inc. P.O. 1318 Grand Forks ND 58201 Minnkota Power Cooperative, Inc. P.O. Box 1318 Grand Forks ND 58201 Minuteman Aviation Inc. 5225 Highway 10 West Airport Box 16 Missoula MT 59802 Missoula Electric Cooperative 1700 West Broadway Missoula MT 59802 Missoula Electric Cooperative Inc. 1700 W Broadway Missoula MT 59808 Missoula Electric Cooperative, Inc. General Manager 1700 West Broadway Missoula MT 59802-2099 Missoula Electric Cooperative, Inc. General Manager 1700 West Broadway Missoula MT 59802-2099 Missoula Hearing Inc. Larry Wundrow 601 S Orange Missoula MT 59801 Missouri Valley Cable TV Attn: Jack Schaefer P.O. Box 57 Mitchell SD 57301 Missouri Valley Cable TV Attn: Jack Schaefer P.O. Box 57 Mitchell SD 57301 Missouri Valley Cable TV Attn: Jack Schaefer P.O. Box 57 Mitchell SD 57301 Missouri Valley Cable TV Attn: Jack Schaefer P.O. Box 57 Mitchell SD 57301 Missouri Valley Cable TV Attn: Jack Schaefer P.O. Box 57 Mitchell SD 57301 Mitchell Concrete 721 N. Edmuds Mitchell SD 57301 Mitchell Park Board 1300 N. Main St Mitchell SD 57301

Mitchell Park Board (Recreation Center) 1300 N. Main St Mitchell SD 57301 Mitchell School District (Longfellow School) 925 E 2nd Mitchell SD 57301 Mitchell School District (Senior High) 900 N. Capital St Mitchell SD 57301 Mitchell School District Junior High) 800 West 10th Mitchell SD 57301 Montage Caldwell Charlie Markwalter 3455 Peachtree Rd NE Suite 1200 Atlanta GA 30326-3248 Montana Association Of Health Care Purchasers William McDonald 929 SW Higgins Ave Suite D P.O. Box 4121 Missoula MT 59803 Montana Building Maintenance Inc. Brian Gilbert P.O. Box 8132 Bozeman MT 59773-8132

Montana Dakota Utilities Gary Paulsen 400 N 4th St Bismarck ND 58501 Montana Department Of Public Health And Human Services Jim Nolan P.O. Box 202956 Helena MT 59620-2956 Montana Department Of Transportation (Highway Relocation) P.O. Box 201001 Helena MT 59620-1001 Montana Department Of Transportation (Highway Relocation) P.O. Box 201001 Helena MT 59620-1001 State Of Montana Planning Prevention & Montana Dept Of Environmental Quality Dept Of Environmental Quality Assistance Div. 1520 East Sixth Street Helena MT 59620-0901 Montana Dept Of Public Health And Human Services Human And Community Services Division P.O. Box 202956 Helena MT 59620 Montana Development Center Tom Gustin P.O. Box 200135 Helena MT 59620-0135 Montana Electric Willie Spoonemore P.O. Box 20415 Billings MT 59104-0834 Montana Energy Education Council 17 Hitching Post Rd Bozeman MT 59715

Montana High School Association James Haugen 1 South Dakota Ave. Helena MT 59601 Montana High School Association 1 South Dakota Ave Helena MT 59601

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 38 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Montana Historical Society 225 N. Roberts Helena MT 59601

Montana Marginal Energy David G. Healow 652 Park Lane Billings MT 59102-1931

Montana Marginal Energy Dave Healow 652 Park Lane Billings MT 59102 Montana Medical Audiology Paul Perry 1600 9th St. South Great Falls MT 59405 Montana Megawatts I, LLC Attn: President 125 S. Dakota Avenue Sioux Falls SD 57104 Montana Refining Company Refinery Manager 1900 10th Street NE Great Falls MT 59404-1955 Montana Resources Vice President 600 Shields Avenue Butte MT 59701 Montana Resources Inc. Attn: Stephen F Walsh President 600 Shields Ave Butte MT 59701 Montana State Department Of Public Health And Human Services P.O. Box 202956 Helena MT 59604 Montana State Department Of Public Health And Human Services P.O. Box 4210 Helena MT 59604 Montana State Prison Tom Gustin P.O. Box 200135 Helena MT 59620-0135 Montana State University Tom Gustin P.O. Box 200135 Helena MT 59620-0135 Montana Tech Of The University Of Montana George P.O.lich 1300 W Park Butte MT 59701 Montana Tunnels Mining Incorporated Attn: General Manager P.O. Box 176 Jefferson City MT 59638 Montana-Dakota Utilities 2603 2nd Ave North Billings MT 59101 Northwestern National Bank Montana-Dakota Utilities c/o Secretary Building 400 North St. Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 39 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St. Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St. Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St. Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St. Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St. Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St. Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St. Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St. Huron SD 57350 Northwestern National Bank Montana-Dakota Utilities Co c/o Secretary Building 400 North St. Huron SD 57350 Montana-Dakota Utilities Co 400 N Fourth St Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 40 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Montana-Dakota Utilities Co 400 North Fourth Street Bismarck ND 58501 A Division Of MDU Resources Group, Montana-Dakota Utilities Co Inc. Bismarck ND 58501 Montgomery Kone Inc. 2504 S Duluth Ave Sioux Falls SD 57105 Montgomery Kone, Inc. 2504 S Duluth Ave Sioux Falls SD 57105 Moore Hearing Pc Stacie Moore 22 Village Loop Kalispell MT 59901 Morgan Stanley Capital Group, Inc. Document Associate 1585 Broadway New York NY 11036 1585 Broadway Commodities Morgan Stanley Capital Group, Inc. Document Associates Dept. 4th Floor New York NY 11036 Morrison Maierle 910 Helena Ave Helena MT 59604-6147 Morrison Maierle Inc. 910 Helena Ave Helena MT 59604-6147 Morrison Maierle, Inc. 910 Helena Ave Helena MT 59604 Morrison-Knudsen Company Inc. 319 Broadway Boise ID 83702 Motel Six 1309 S. Ohlman Mitchell SD 57301 Mother Joseph Manor 1002 N. Jay St. Aberdeen SD 57401-2439 Mountain Excavation Co Loretta Moore 719 N Haggin Red Lodge MT 59068 MPC Natural Gas Funding Trust 40 East Granite Butte MT 59701 MSE Technology Applications, Inc. Tetragenics Division P.O. Box 4078 Butte MT 59702 MSU-Northern Byron Ophus P.O. Box 7751 Havre MT 59501 MT Vernon Public School N Main Mount Vernon SD 57363 Musak Communications Shag Miller P.O. Box 4050 Butte MT 59702 Musak Communications Shag Miller P.O. Box 4050 Butte MT 59702 Myron Niedfelt Rt. 6 Box 225 Grand Island NE 68801

N T L Engineering & Geoscience, Inc. Gary Quinn P.O. Box 3269 Great Falls MT 59403 Nancy Ellis 5391 Salish Rd Blaine WA 98230-9544 Narragang Holding Corporation Attn: Art Russo P.O. Box 1532 Aberdeen SD 57402-1532 Narragang Holding Corporation P.O. Box 1532 Aberdeen SD 57402-1532 Nash Enterprises Inc. P.O. Box 16141 Missoula MT 59808-6141 National Gas & Electric, LP Contract Administration 3555 Timmons Ste 1500 Houston TX 77027 Natural Gas Processing P.O. Box 841 Worland WY 82401 Nellie Connell P. O. Box 78 Burke SD 57523-0078 Nemont Telephone Coop P.O. Box 600 Scobey MT 59263 Nepeco Company Chad Petrich P.O. Box 68 Byron WY 82412 Nerregang Holding Corporation 506 S Main St Aberdeen SD 57401

Network Associates Kevin Lausin 20460 NW Von Neuman Dr Beaverton OR 97006 New Royal Properties 232 3rd St., SW Huron SD 57350-2403 Nexant, Inc. Joseph Bright 101 Second St. 11 Floor San Francisco CA 94105-2672 Nextel West Corp 4245 S 143rd. St. Omaha NE 68137 Nitro Green P.O. Box 4393 Missoula MT 59806 Nitro Green Laurie Kohler P.O. Box 4393 Missoula MT 59806 Norcom Advanced Technologies, Inc. 33 Third Street SE Huron SD 57350 Norcom Advanced Technologies, Inc. 33 Third Street SE Huron SD 57350 Norcom Advanced Technologies, Inc. 33 Third Street SE Huron SD 57350 Norcom Advanced Technologies, Inc. 33 Third Street SE Huron SD 57350 Norcom Advanced Technologies, Inc. 33 Third Street SE Huron SD 57350 Norcom Advanced Technologies, Inc. 33 Third Street SE Huron SD 57350 Norcom Advanced Technologies, Inc. 33 Third Street SE Huron SD 57350 Norma E. Treacy #303 11650 - 79th Ave NW Edmonton AB T6G OP7 Canada

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 41 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Norma I. Reitz 2024 Wyndham Park Drive Billings MT 59102 Norman Barlund RR 2 Box 526 Milbank SD 57252-9317 Norman F. Schelske P. O. Box 353 Springfield SD 57062-0353 Norman M Stelk Route 2 Box 182 Grand Island NE 68801

Norman Schelske 920 W. Norway, Apt. 306 Springfield SD 57062 North American Contract Employee Services Pat Clemens 3730 Fm. 1960 West Suite 200 Houston TX 77068 North American Services Group 275 Industrial Rd. Cambridge ON N3H 4R7 Canada North Dakota State Department Of Health Air Pollution Control Program Missouri Office Building 1200 Missouri Ave Bismarck ND 56505 Northeast Communications, William Frazen P.O. Box 791 Glasgow Mt 59230 Northeast TV Rich Davis 7 Eighth Ave. SE Watertown SD 57201 Northern Maintenance Chuck Ives P.O. Box 1073 Hamilton MT 59840 Northern Montana College Tom Gustin P.O. Box 200135 Helena MT 59620-0135 Northern Montana Hospital Lisa Bickford P.O. Box 1231 Havre MT 59501

Northern Municipal Power Agency P.O. Box 528 Thief River Falls MN

Northern Municipal Power Agency P.O. Box 528 Thief River Falls MN Northern Municipal Power Agency P.O. Box 528 Thief River Falls MN Northern Municipal Power Agency P.O. Box 528 Thief River Falls MN Northern Municipal Power Agency P.O. Box 528 Thief River Falls MN Northern Municipal Power Agency P.O. Box 528 Thief River Falls MN Northern Municipal Power Agency P.O. Box 528 Thief River Falls MN Northern Municipal Power Agency P.O. Box 528 Thief River Falls MN Northern Municipal Power Agency P.O. Box 528 Thief River Falls MN Northern Municipal Power Agency P.O. Box 528 Thief River Falls MN Northern Municipal Power Agency P.O. Box 528 Thief River Falls MN Northern Natural Gas Company Attn: Director of Technical Operations P.O. Box 3330 Omaha NE 68103 Northern Natural Gas Company Attn: Ellis Warren P.O. Box 336 Omaha NE 68124 Northern Natural Gas Company P.O. Box 3330 Omaha NE 68103-0330 Northern Natural Gas Company P.O. Box 3330 Omaha NE 68103-0330 Northern Natural Gas Company P.O. Box 3330 Omaha NE 68103-0330 Northern Natural Gas Company P.O. Box 3330 Omaha NE 68103-0330 Northern Natural Gas Company Attn: Director Of Technical Operations P.O. Box 3330 Omaha NE 68103 Northern Natural Gas Company Attn: Director Of Technical Operations P.O. Box 3330 Omaha NE 68103 Northern Natural Gas Company Attn: Ellis Warren P.O. Box 336 Omaha NE 68124 Northern Natural Gas Company P.O. Box 3330 Omaha NE 68103-0330 Northern Natural Gas Company P.O. Box 3330 Omaha NE 68103-0330 Northern State College 1201 South Jay St Aberdeen SD 57401 Northern State University 1201 South Jay St Aberdeen SD 57401 Northern States Power Co. Dave Grover 414 Nicollet Mall Minneapolis MN 55401 Northern States Power Company P.O. Box 2747 Fargo ND 58108-2747 Northern Trust Company Ron Kerst 50 South Lasalle St Chicago IL 60675 Northstate Corporations P.O. Box 627 Powel WY 82435 Northwest Bank South Dakota Na Chad Backles 405 Dakota Ave S Huron SD 57350 Northwest Communications, Inc. P.O. Box 3786 Bozeman MT 59715 Northwest Dynamics Inspection Services I Bob Osier P.O. Box 1288 Bigfork MT 59911

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 42 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

Northwest Energy Efficiency Alliance Margie Gardner 529 SW 3rd Ave Suite 600 Portland OR 97204 Northwest Pipe Fittings Jerry Evenson P.O. Box 1258 Billings MT 59103 Northwest Power Pool Agreement Director, NWPP 26 SW Salmon, Suite 400 Portland OR 97204 Northwest South Dakota Energy Conservation Corporation 414 Third Avenue East Sisseton SD 57252 Northwestern Energy 33 Third St SE P.O. Box 1318 Huron SD 57350 Northwestern Energy 33 Third St SE P.O. Box 1318 Huron SD 57350 Northwestern Energy 33 Third St SE P.O. Box 1318 Huron SD 57350 Northwestern Energy 33 Third St SE P.O. Box 1318 Huron SD 57350 Northwestern Energy Corporation 33 Third St SE P.O. Box 1318 Huron SD 57350-1318 Northwestern Energy Corporation 33 Third St SE P.O. Box 1318 Huron SD 57350-1318 Northwestern Energy Corporation 33 Third St SE P.O. Box 1318 Huron SD 57350-1318 Northwestern Energy Corporation 33 Third St SE P.O. Box 1318 Huron SD 57350-1318 Attn: Mark Thompson Vice President Of Northwestern Energy, LLC Energy Supply 40 E Broadway St Butte MT 59701

Northwestern Public Service Company 33 Third St SE P.O. Box 1318 Huron SD 57350

Northwestern Public Service Company Natural Gas Sales Agreement #1 Tomi Drive Parker SD 57053 Northwestern School District P.O. Box 45 Mellette SD Northwestern Services Corporation 125 S. Dakota Ave. Sioux Falls SD 57104 Northwestern Services Corporation 125 S. Dakota Ave. Sioux Falls SD 57104 Norwest Bank Of Nebraska 202 West 3rd Grand Island NE 68801 Norwest Bank Of South Dakota 206 S. 1st St. Aberdeen SD 57104 Nova Gas Transmission Ltd. 1525 10Th Ave. SW Calgary Alberta T3C 0J6 Canada Nyla Kafka 225 Main St., S. Avon SD 57315 Nystrom Contractors Inc. 3M Building 500 Baker Building Minneapolis MN 55402 Office Solutions And Services 55 E Galena Butte MT 59701 Office Solutions And Services 55 East Galena Butte MT 59701 O'Haires Inc. P.O. Box 159 Vaughn MT 59487 Oily Waste Processors, Inc. P.O. Box 903 Great Falls MT 59403 Olive H. Keup Trust Elizabeth K. Archibald Trustee 4875 SW 78th Ave Apt. 381 Portland OR 97225-1863 Olson Rentals, Robert Olson, 1606 First Street Havre MT 59501 Olson, Bob 920 East Ash Mitchell SD 57301 Olson's Lands Services 860 Strawberry Dr Helena MT 59601 Olympus Technical Services Inc. 765 Colleen St Helena MT 59601 Olympus Technical Services Inc. 765 Colleen St Helena MT 59601 One Call Locators Josh Hinrichs 4500 Majestic Dr Missoula MT 59808 One Call Locators (Ocl), Ltd 1120 Kensington Ave Missoula MT 59801 One Call Locators, Ltd. 1120 Kensington Ave. Missoula MT 59801 One Call Locators, Ltd. 1120 Kensington Ave. Missoula MT 59801 One Eighty Communications Attn: Chris Dimock 206 N 29th Billings MT 59101 One Eighty Communications 206 N 29th Billings MT 59101 Oneok Energy And Trading Company LP Attn: Contract Administration 100 West Fifth Street, 16 Floor P.O. Box 2405 Tulsa OK 74102-2405 Open Access Technology Inc. Mary Brown 2300 Berkshire Lane North Minneapolis MN 55441-3606 Open Access Technology Inc. Mary Brown 2300 Berkshire Lane North Minneapolis MN 55441-3606 Open Access Technology Internation, Inc. Dr. Sasn Mokhtari 2300 Berkshire Ln North Minneapolis MN 55441

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 43 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Open Access Technology International Inc. 8401 Wayzata Blvd Suite 180 Minneapolis MN 55426 Operations, Cps 111 Market Place-Suite 500 Baltimore MD 21202 Operations, Cps 111 Market Place-Suite 500 Baltimore MD 21202 Opex Corporation Ed Stratum 305 Commerce Dr Moorestown NJ 08057 Orcom Solutions, Inc. Alliance Data Systems Bob Stevens 1001 SW Disk Drive Bend OR 97701 Ore-Ida Foods Plant 2 Clay Crim 204 East Roberts Grand Island NE 68803 Ortman Hotel & Café P.O. Box 217 Canistota SD 57012 Osi Software Inc. Ron Kotz 777 Davis Street, Ste. 2 San Leandro CA 94577 Osi Software Inc. 777 Davis Street Suite 250 Saan Leandro CA 94577 Osi Software Inc. 777 Davis Street Suite 250 Saan Leandro CA 94577 Otter Tail Energy Services 224 East Washington Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Co Secretary 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company Mark Rolfes 215 S Cascade St Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 44 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 215 South Cascade Street Fergus Falls MN 56537 Otter Tail Power Company 216 South Cascade Street Fergus Falls MN 56537

Our Lady Of The Rockies Foundation Victor Durran P.O. Box 668 Butte MT 59703-0668 Overhead Door Co P.O. Box 2007 (2514 E. Highway 30) Grand Island NE 68802 Overhead Door Co. Of Butte 101 S Parkmont Butte MT 59701 P Tel LLC 2518 Harvard Butte MT 59701 P. B. Haber Investment 104 S. Main St Suite 714 Fond Du Lac WI 54935

Pace Paul Meyers 4401 Fair Lakes Ct. Suite 400 Fairfax VA 22033 Pace International Union Mr. Steve Gentry Afl-Cio, Clc. P.O. Box 21555 Billings MT 59104 Pacific Metering, Inc. Rodney Walker 34304 SW Ladd Hill Rd Wilsonville OR 97070 Pacific Metering, Inc. Rodney Walker 34304 SW Ladd Hill Rd Wilsonville OR 97070 Pacific Northwest Coordination Post- Suite 400, 303 North Transfer Agency Agreement Dave Kinnard Broadway Billings MT 59101

Pacific Northwest Security Coordination Bonneville Power PNSC Service Agreement Jack Bernhardsen Administration 5411 NE Highway 99 -TooVancouver WA 98663 825 NE Multnomah Street PacifiCorp Power Marketing Suite 625 Portland OR 97232 825 Ne Multnomah Street - PacifiCorp Mgr., Contract Administration Suite 625 Portland OR 97232 PacifiCorp 825 N.E. Multnomah Street Suite 625 Portland OR 97232

PacifiCorp Power Marketing, Inc. Contract Administration 830 N.E. Holladay - Suite 200 Portland OR 97232 PacifiCorp Power Marketing, Inc. Contract Administration 830 N.E. Holladay-Suite 200 Portland OR 97232

Pacificorp, Attn: Brian Mcclellan 700 NE Multnomah, Suite 550 Portland OR 97232 Palace Cleaners, Inc. 109 W. 6th Ave Mitchell SD 57301 Palmer Electric Technology Energy Services Inc. 2407 Harve St Missoula MT 59802 Palmer Electric Technology Energy Services Inc. 2407 Harve St Missoula MT 59802

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 45 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Pamda Software Usa James Marmolego P.O. Box 10578 Glendale CA 91209 Paper Moon/Abbey Carpet P.O. Box 645 Butte MT 59703 Par Electrical Contractors, Inc. Ken Silman 27 Inverness Drive Englewood CO 80112

Parisi Western Plumbing & Heating, Inc. P.O. Box 948 Livingston MT 59047 Park Electric Co Operative, Inc. P.O. Box 1119 Livingston MT 59047 Park Electric Cooperative, Manager Box 1119 5706 Hwy. 89 South Livingston MT 59047 Park High School 102 View Vista Dr Livingston MT 59047 Park View Care Center 303 W 6th Ave Bryant SD 57221 Parkas Inc.David Levee 7260 NE Earlwood Rd Newburg OR 97132-7011 Parker School 300 W. Second Parker SD 57053 Parker School P.O. Box 517 Parker SD 57053-0517 Parkston Cable TV 1111 S Miller Mitchell SD 57301 Parkston Cable TV P.O. Box 670 Tyler TX 75710 Parkston Cable TV P.O. Box 670 Tyler TX 75710 Parkston Cable TV 1111 S Miller Mitchell SD 57301 Parkston Public School-Elementary School P.O. Box D Parkston SD Parkston Public School-High School Armory P.O. Box D Parkston SD 57366-1204

Parsec Group Inc. 405 Urban Street, Suite 100 Lakewood CO 80228 Pasta Montana LLC Attn: Vice President P.O. Box 1868 Great Falls MT 59403 Pat Dunlavy Maxim Technologies P.O. Box 4669 Helena MT 59604 Pat Leary d/b/a Leary Contracting Route 1 Box 1533 Pat Leary Lewistown MT 59457 Patrick Construction Tom Patrick P.O. Box 591 Havre MT 59501 Paul C. Sprenger Atty-In-Fact H.K. Wiman & D.A. Nystrom 325 Ridgewood Avenue Minneaplois MN 55403 Paul F. Mcmullin P.O. Box 55 Ennis MT 59729 Paul Lavallee P. O. Box 924 Huron SD 57350-0924

Paul O'Leary d/b/a Welding Services P.O. Box 4362 Butte MT 59701 Paymentech Merchant Services LLC 1601 Elm St Dallas TX 75201 PCI Jason Kram 3000 S. Berry Rd. Suite 100 Norman OK 73072 PCI Jason Kram 3000 S. Berry Rd.Suite 100 Norman OK 73072 Peavey Elevator Box 98 Vienna SD 57271 Peavy Company P.O. Box 687 Grand Island NE 68801 Perkins 2205 6th Street Brookings SD 57006 Peters, Donald J. Don Peters P.O. Box 3102 Missoula MT 59803 Peterson Farms Inc. 1424 E. Capital Avenue Grand Island NE 68801 Peterson Farms Inc. 1424 E. Capital Avenue Grand Island NE 68801 Peterson Farms Inc. 1424 E. Capital Avenue Grand Island NE 68801 7500 Old Georgetown Road - PG&E Energy Trading - Power, L.P. Sarah M. Barpoulis 14th Floor Bethesda MD 20814 7500 Old Georgetown Road- PG&E Energy Trading - Power, L.P. Sarah M. Barpoulis 14th Floor Bethesda MD 20814

Pgp Attn: Copyright Agent 3460 W Bayshore Palo Alto CA 94303 Philipsburg School Dist 1 407 Schnepel St Philipsburg MT 59858 Phill Nadeau S. 2311 Manito Boulevard Spokane WA 99203 Phillip A Webberson P.O. Box 517 Stevensville MT 59870

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 46 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

Piccadilly Museum, LLC Jeff Francis P.O. Box 494 20 W. Broadway Butte Mt 59701 Pierce Flooring & Design Center 800 Dewey Blvd Butte MT 59701 Pierce Flooring & Design Center, Inc. 800 Dewey Blvd Butte MT 59701 Pierson Ford Atth Tim Pierson 701 Auto Plaza Dr Aberdeen SD 57401 Pierson Ford 701 Auto Plaza Dr Aberdeen SD 57401 Pierson Ford Lincoln Mercury Inc. 701 Auto Plaza Dr Aberdeen SD 57401 Pinkerton Consulting & Investigations Inc. Attn: Legal Notice 13950 Ballantyne Corporate Pl Charlotte NC 28277-2712 Pitney Bowes Credit Corp 3rd Floor 1313 N Atlantic Ave Spokane WA 99201 Pitney Bowes Credit Corp 3rd Floor 1313 N Atlantic Ave Spokane WA 99201 Pitney Bowes Credit Corporation 2225 American Dr Neenah WI 54956-1005 Pitney Bowes Credit Corporation 2225 American Dr Neenah WI 54956-1005 Pitney Bowes Credit Corporation 2225 American Dr Neenah WI 54956-1005 Pitney Bowes Credit Corporation 1401 W Bailey Sioux Falls SD 57104-1316 PK Service Sylda Pfile 200 14th Ave S Great Falls MT 59405 Plains Marketing Canada, Lp Donn Wadey 1400, 888-3rd Street SW Calgary AB T2P 5C5 Canada Plainsman 49 3rd St SE Huron SD 57350 Platte Valley Cable TV Mr. Jack W Schaefer, President 1111 S Miller Mitchell SD 57301 Platte Valley Cable TV 1111 S. Miller Mitchell SD 57301 Plum Creek Mdf Inc. Marilee Hoppner P. O. Box 1990 Columbia Falls MT 59912 Poinsett Colony R.R.1 Box 146 Estelline SD 57234 Poinsett Colony R.R.1 Box 146 Estelline SD 57234 Portland General Electric Company 121 S. W. Salmon Street Portland OR 97204 Portland General Electric Company 121 SW Salmon Portland OR 97204 Poteet Construction 9435 Summit Dr Missoula MT 59808 Power Chevrolet 1501 Cedar St Helena MT 59601 Power Costs Inc. Jason Kram 3000 S. Berry Rd. Suite 100 Norman OK 73072

Power Engineers Inc Janet Crockett Hailey 1295 South Eagle Flight Way Boise ID 83709 Power Resource Managers LLP Loren A. Baker 2100 112th Ave., N.E. Suite 100 Bellevue WA 98004-2911 Power Technologies, Inc. 1482 Erie Blvd Schenectady NY 12305 Power Trading 550 Westlake Park Blvd. Houston TX 77253-3092 Power Trading P.O. Box 3092 Houston TX 77253-3092 Senior Manager, Contracts And Powerex Regulatory Affairs Suite 2210, 666 Burrard Street Vancouver B.C Canada BC V6C 2X8 Canada

Powerex Regional Manager, Power Marketing Suite 2210, 666 Burrand Street Vancouver B.C Canada BC V6C 2X8 Canada

Powerex Regional Manager, Power Marketing Suite 2210, 666 Burrand Street Vancouver B.C Canada BC V6C 2X8 Canada Powerlytixs Mike Griswold P.O. Box 501171 St. Louis MO 63150 PP&L Energy Plus Co LLC Joseph P Langan Energy Operations Manager 2 N Ninth St Allentown PA 18101 PP&L Energy Plus Co LLC Energy Operations Manager 2 N Ninth St Allentown PA 18101 Two North Ninth Street PP&L Energy Plus Co. Manager-Electricity Trading (Gentw20) Allentown Pa 18101-1179 PP&L Energy Plus Co., LLC 2 North Ninth Street Allentown PA 18101 Two North Ninth Street PP&L Energyplus, LLC Manager-Electricity Trading (Gentw20) Allentown Pa 18101-1179 PP&L Montana , LLC Terry Crupi Two North 9th Street Allentown PA 18101-1179 PP&L Montana, LLC Manager Of Power Trading 45 Basin Creek Road Butte MT 59701 PP&L Montana, LLC 45 Basin Creek Road Butte MT 59701

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 47 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country PPL Corporation Office Of General Counsel Two N Ninth St Allentown PA 18101 PPL Energyplus, LLC Director, Marketing And Trading 45 Basin Creek Road Butte MT 59701

Suite 400, 303 North PPL Montana, LLC Dave Kinnard Broadway Billings MT 59101 PPL Montana, LLC And PPL Energy Attn: Dir. Of Trading And Plus, LLC As Agent 45 Basin Creek Road Marketing Butte MT 59701 PR Newswire Associations, Inc. 810 Seventh Ave 35th Floor New York NY 10019 Prairie Fire 140 N Phillips Ave Sioux Falls SD 57104 Prairie Fire Internet Technologies, L.L.C. 140 N Phillips Ave Sioux Falls SD 57104 Presentation Heights Junior College 15th Ave NW N 2nd St Aberdeen SD 57401 Pro Med Services Inc. 630 West Mercury Butte MT 59701 Professional Mailing & Marketing Virgil Borns Jr 13 2nd St Se Watertown SD 59201 Project Manager 2603 2nd Ave. North P.O. Box 2546 Billings MT 59122-2546 Project Manager 2603 2nd Ave. North P.O. Box 2546 Billings MT 59122-2546 Project Telephone Company, Inc. P.O. Box 600 Scobey MT 69263-0600 Proliant Inc. Agent: U.S. Energy Services 100 Superior Blvd. Suite 201 Wayzata MN 55391 Propane Equipment c/o Dixie Transport Inc. 3768 S 300 West Salt Lake City UT 84115 Prostrollo Motor 1001 S Washington Madison SD 57042 Public Service Company Of Colorado Rodney Mclenon 1099 18th St Suite 3000 Denver CO 80202 Public Service Company Of Colorado Power Marketing Manager P.O. Box 1078 Golden CO 80402-1078 Puget Sound Energy, Inc. P.O. Box 90868 (Gen-04W) Bellevue WA 98009-0868

Puget Sound Power & Light Company Manager, Power Management P.O. Box 97034 Bellevue WA 98009-9734 Putman & Associates 536 West Reserve Kalispell MT 59901 Q Communications Bonnie Lambert 1 North Chance Gulch Helena MT 59601 Quality Inspection Services, Inc. P.O.Box 520 Goodwell OK 73939

Quality Maintenance Enterprises, LLC P.O. Box 3043 Missoula MT 59806

Quality Resource & Services, Inc. P.O. Box 14781 Spokane WA 99214 Quentin M. Marino 3180 Bocgos Circle Ann Arbor MI 48105-1564 Quicksilver Resources Inc. 777 West Rosedale Suite 300 Fort Worth TX 76014 Qwest Directory (Butte, Bozeman, Billings, Missoula, Great Falls, Lewistown, Glasgow, Helena) Sue Kalaris-Siess 401 N 31St 14th Floor Billings MT 59101 R.E. Miller & Sons 15 Ramshorn Dillon MT 59725 R.L. Schaff Concrete Construction P.O. Box 954 Billings MT 59103 Racota Valley Ranch R.R. 1 Hazel SD 57242 Rainbow Play Systems 500 Rainbow Parkway Brookings SD 57006 411 108th Avenue NE Obc-14E P O Box Ralph Olson - PSE 97034 Obc-14E Bellevue WA 98009-9734 Ram Enterprises 24 N Main Aberdeen SD 57401 Ramada Inn 3333 Ramada Road Grand Island NE 68801 Ramada Inn Restaurant 3333 Ramada Road Grand Island NE 68801 Randall, Brian RR 1 Box 272 Canistota SD 57012-9999

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 48 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Randy Hanson RR 1 Box 124 Castlewood SD 57223 Randy Hanson 12012 NE 95th St., Ste. 16 Vancouver WA 68682-2450 Ravalli Republic 232 West Main Hamilton MT 59840 Ray Dickinson P.O. Box 609 Ennis MT

Ray Standiford P.O. Box 358 Chester MT 59522-0358 Raymond L. Shriner Route 1 North Highway 218 Grand Island NE 688001 Raymond Parker-Dryer RR 1 Box 122 Clear Lake SD 57226 Real Food Store, Inc. 501 Fuller Ave Helena MT 59601 Realsystems 2601 Elliott Ave Suite 1000 Seattle WA 98121 Rector's Redi-Mix Concrete 3440 West Old Highway 30 Grand Island NE 68803 Red Lobster #0734 General Mills Restaurant P.O. Box 593123 Orlando FL 32859-3123 ReedPoint High School P.O. Box 338 Reed Point MT 59069 Retirement Horizons, Inc. Karen Harbour 8701 New Trails Dr Suite Y The Woodlands TX 77381 Revillo Farmers Elevator P.O. Box 98 Revillo SD 57259 Richard & Carolyn Poulsen, Ginette Grosz And Lavonne Polzien, Richard Poulsen 12515 Oak Air Drive Omaha NE 68137 Richard E Stephens P.O. Box 612 Shelby MT 59474 Richard I. Brown 4205 S. Bellaire Circle Englewook CO 80110-5030

Richard J. Newton 1050 Clark Lane Dillon MT 59275 Richard Robinson 1908 Burleigh St. Yankton SD 57078-1823 Richard S. Poulsen 12515 Oak Air Dr. Omaha NE 68137 Richard Stelk 3812 West 13th Street Grand Island NE 68801 Richard Stelk 3812 West 13th Street Grand Island NE 68801 Richardson Family Partnership 612 Citizens Building Aberdeen SD 57401 Richardson Family Partnership 613 Citizens Building Aberdeen SD 57401 Richardson-Orr Trust Atth Robert Orr 204 South Main St Aberdeen SD 57401 Richardson-Orr Trust Atth Robert Orr 204 South Main St Aberdeen SD 57401 Rick Hill 231 W Cottonwood Lewistown MT 59457

Rick Hurley d/b/a Rick Hurley Trucking P.O. Box 254 Shelby MT 59474 Riedesel Farms R.R. 2 Box 30 Brookings SD 57006 Risk Administration Services P.O. Box 89310 Sioux Falls SD 57109

Risk Sciences Group Ralph Hooper 770 Tamalpais Drive, Ste 330 Corte Madera CA 94925 15395 SE 30th Place Suite Risk Sciences Group, Inc. d/b/a Paradigm Infosystems 210 Bellevue WA 98007 Riverside Lodge 404 Woodland Drive Grand Island NE 68801

Roadarmel Construction, Inc. 1150 Carpenter Ln. Three Forks MT 59752

Robert A Hardebeck P.O. Box 6 Superior MT 59872 Robert A Hardebeck P.O. Box 6 Superior MT 59872 Robert D. Pinkerton P.O. Box 498 Powell WY 82435-0498 Robert P. Clark E. 16314 Main Ave Veradale WA 99037

Robert R. Flick, Jr. P.O. Box 231 Big Timber MT 59011-0231 Robert W. Peterson 1352 Nisen Court Broomfield CO 80020 Robert Webster 2850 Blacktail Loop Butte MT 59701

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 49 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Robert Wenzl RR5 Box 14 Grand Island NE 68801 Robin Dangerfield d/b/a The Lawn Ranger P.O. Box 22434 Billings MT 59104 Rocky Mountain Contractors Randy Williams Po Box 8688 Kalispell MT 59904 Rocky Mountain Contractors, Inc. P.O. Box 4429 Helena MT 59604 Rocky Mountain Medical Service PC d/b/a Rocky Mountain Clinic 1101 S Montana Butte MT 59701

Rocky Mountain Security Service, Inc. P.O. Box 903 Bozeman MT 59771 Rocky Mountain Supervac, Inc. 107 Ponderosa Ln Kalispell MT 59901 Rocky Mountain Traffic Control 601 Garden Ave Butte MT 59701 Rocky Mountain Traffic Control 601 Garden Ave Butte MT 59701 Ronald E. Olsen d/b/a Olson's Land Services 860 Strawberry Dr Helena MT 59601 Roncalli High Scholl 1400 N Dakota St Aberdeen SD 57401-4414 Ronna Schaefer d/b/a Parkston Cable TV 1111 S Miller Mitchell SD 57301 Rosalie A. Roraff 1026 E. Constitution Dr. Gilbert AZ 85296-9756 Rose Verrall d/b/a LV Janitorial Services 1621 Yale St Butte MT 59701 Roseberg Forest Products Ellen Porter P. O. Box 4007 Missoula MT 59806 Roseburg Forest Products Company (Information Only - Roseburg Replaced Louisiana Pacific) Energy Team 5311 S. Ventura Ct Aurora CO 80015

RoseNEluth International Inc. Contracts Administrator 2401 Walnut St Philadelphia PA 19103

Ross Creek Hydro, L.C. c/o Brent L Smith, President P.O. Box 535 Rigby ID 83442 Rounds Brother Excavation 20751 418th Ave Iroquois SD 57353 Roundup City - County Airport, Kelly Gebhardt 506 Main Street Roundup MT 59072 RSM McGladrey 100 South Phillips Ave Ste 404 Sioux Falls SD 57104-6721

Ruggles Excavation, Inc. P.O. Box 227 Livingston MT 59047 Saco High School P.O. Box 298 Saco MT 59261 Sacred Heart Church 409 SE 3rd Ave Aberdeen SD 57401 Sacred Heart Church 409 SE 3rd Ave Aberdeen SD 57401 Safety-Kleen Corporation East 9516 Montgomery Spokane WA 99206 Saint Paul's Lutheran Church 1515 S. Harrison Grand Island NE 68803 Sam Miller 2900 4th Avenue North P.O. Box 35800 Attn: B2100 Billings MT 59107-5800 Sam Miller P.O. Box 35800 Attn: B2100 Billings MT 59107-5800 Same Day Delivery P.O. Box 6455 Bozeman MT 59771

Saneorn Interactive Video Network, Inc. Mitchell Technical Institute Attn: John J Heemstra 821 N. Capital Mitchell SD 57301 SAP Tom Schwab 3999 Westchester Pike Newton Square PA 19073 SAP America Tom Schwab 3999 Westchester Pike Newton Square PA 19073 Satellite Cable Services Douglas M. Bierschbach P.O. Drawer U Desmet SD 57231 Satellite Cable Services Douglas M. Bierschbach P.O. Drawer U Desmet SD 57231

Satellite Cable Services - II Inc. Richard A Cutler 200 National Reserve Building Sioux Falls SD 57102

Satellite Cable Services - II Inc. Richard A Cutler 200 National Reserve Building Sioux Falls SD 57102

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 50 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country

Satellite Cable Services - II Inc. Richard A Cutler 200 National Reserve Building Sioux Falls SD 57102

Satellite Cable Services - II Inc. Richard A Cutler 200 National Reserve Building Sioux Falls SD 57102

Satellite Cable Services - II Inc. Richard A Cutler 200 National Reserve Building Sioux Falls SD 57102

Satellite Cable Services - II Inc. Richard A Cutler 200 National Reserve Building Sioux Falls SD 57102 Satellite Cable Services, Inc. P.O. Box 106 1027 Main Ave South Brookings SD 57006 Satellite Cable Services, Inc. P.O. Box 106 1027 Main Ave South Brookings SD 57006 Satellite Cable Services, Inc. P.O. Box 106 1027 Main Ave South Brookings SD 57006 Satellite Cable Services, Inc. P.O. Box 106 1027 Main Ave South Brookings SD 57006 Schaaf & Schaaf Box 240A Route 3 Grand Island NE 68801 Schlumberger Mike Burns 5432 Eldorado Blvd NW Bremerton WA 98312 Schlumberger Mike Burns 5432 Eldorado Blvd NW Bremerton WA 98312 Schlumberger, Dowell, Inc. Dowell Schlumberger P.O. Box 908 Worland WY 82401 Schneider Consulting Services 513 First St Helena MT 59601 Schneider Consulting Services 513 First St Helena MT 59601 School For The Visually Handicap Attn: Dean North 423 17th Ave Southeast Aberdeen SD 57401 Schwartz Bros. Partnership 28674 417 Ave Tripp SD 57376 Scotland School District 4-3 P.O. Boc 327 Scotland SD 57059-0327 Scott Equipment Lorraine Bingeman P.O. Box 1761 Williston ND 58801-1761

Scotte & Renee Olson P.O. Box 133 Corsica SD 57328 Scottish Rite Temple Association 333 Cedar St P.O. Box 124 Yankton SD 57078 Scottish Rite Temple Association Don Munson P.O. Box 124 Yankton SD 57078 SD School For Visually Handicap 423 SE 17 Ave Aberdeen SD 57401

SDN Communications Liz Schmidt 124 S First St Sioux Falls SD 57104 Securitas Security Services Usa, Inc. 18 Sixth St N Great Falls MT 59401

Security Armored Express Inc. Richard Todorovich P.O. Box 4937 Helena MT 59604 Security Armored Express Inc. Leif Watkins P.O. Box 4937 Helena MT 59604 Security Fire Protection Inc. P.O. Box 5868 Helena MT 59604 Selby's 2595 Enterprise Ave P.O. Box 80625 Billings MT 59108 Selby's 2595 Enterprise Ave P.O. Box 80625 Billings MT 59108 Selby's 2595 Enterprise Ave P.O. Box 80625 Billings MT 59108 Servicemaster 1118 West 9h St Yankton SD 57078 Servicemaster Of Southeast South Dakota 1118 W. 9th Street Yankton SD 57078 Sexauer Company P.O. Box 540 Brookings SD 57006-0540 SGS Statistical Services 5991 North Placita De La Oleada Tucson AZ 85750 SGS Statistical Services 5991 North Placita De La Oleada Tucson AZ 85750

Shamrock Land & Real Estate Services 107 East Commercial St Anaconda MT 59711 Shareholder.Com 12 Clock Tower Place Maynard MA 01754 Sharon Lee Wollan Box 854 Cut Bank MT 59427 Sharp Chevrolet-Cadillac 2323 6th St E Brookings SD 57006 Shaw Power Technologies Tim Laskowski 1482 Erie Blvd Schenectady NY 12301-1058

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 51 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Shaw Power Technologies, Inc. 1482 Erie Blvd. Schenectady NY 12305 Shawn Morris 721 South 11th Ave Bozeman MT 59715 Shelby Gas Association Larry Nelson P.O. Box 729 Shelby MT 59474 Shelby High School 1001 6th St North Shelby MT 59474 Sheraton Ramkota Inn 1400 8th Ave Northwest Aberdeen SD 57401

Shipcom Wireless Inc. 11200 Richmond Ave Suite 552 Houston TX 77082 Shipcom Wireless Inc. 11200 Richmond Ave Suite 552 Houston TX 77082 Shirley M. Dymond P.O. Box 2815 Casper WY 82602 Shopko Stores Inc. 149 500 N Hwy 281 Aberdeen SD 57401 Shopko Stores, Inc. #38 2208 North Webb Road Grand Island NE 68803 Siebel Systems Inc. 1855 South Grant Street San Mateo CA 94402 Siemens Power T&D John Buckley Dept. Ch. 10075 Palatine IL 60055-0075 Sierra Pacific Energy Company Manager Of Trade Operations 5450 W. Sahara Ave Las Vegas NV 89146 Sierra Pacific Energy Company Manager Of Trade Operations 5450 W. Sahara Ave Las Vegas NV 89146 Sierra Pacific Energy Company Manager Of Trade Operations 5450 W. Sahara Ave. Las Vegas NV 89146 Sierra Production Company P.O. Box 716 Shelby MT 59474 Silchester International Investors Limited Ms. Farias Parah 780 Third Ave 42nd Floor New York NY 10017 Simplexgrinnell 5400 Nathan Ln North Plymouth MN 55442 Sioux Falls Project Impact, Inc Diane Worrall 21372 401st Ave. Huron SD 57350

Sioux Valley Hospitals & Health System Director Of Marketing P.O. Box 5039 Sioux Falls SD 57117 Sioux Valley Management Services Trixy Burgess P.O. Box 91110 Sioux Falls SD 57109 Sioux Valley School 200 Hansina Ave Volga SD 57071 Sioux Valley Telephone Company 525 E 4th St Dell Rapids SD 57022 Six Continents Hotels Inc. Darrrell L Marciniak 6 Ravinia Dr Ste 2900 Atlanta GA 30346

SK Geotechnical Corporation Lowell Klocke P.O. Box 3026 Butte MT 59701 Skagway - Five Points P.O. Box 1647 Grand Island NE 68802 Skagway - South Locust 1607 South Locust Grand Island NE 68801 Sky Scan Cable Co DM Laflan President 713 Main Box 111 Creighton NE 68729 Skyways Ltd. P. O. Box 124 Huron SD 57350-0124 Smurfit-Stone Container Corporation Mill Manager Frenchtown Mill P.O. Box 4707 Missoula MT 59806-4707 Smurfit-Stone Container Corporation Pat Clevenger P.O. Box 4707 Missoula MT 59806-4707

Software Performance Vernon Downing Drawer 984 Friendswood TX 77549 Software Performance, Inc. P.O. Drawer 984 Friendswood TX 77546

Solar Plexus, LLC 130 W Front Missoula MT 59802 Solar Turbines, Inc. 6965 Union Park Center Suite 460 Midvale UT 84047 Solid Solutions LLC 2025 Garfield Butte MT 59701 South Dakota Concrete Products South East City Limits Mitchell SD 57301 South Dakota Department Of Envirnoment And Natural Resources 523 East Capitol Pierre SD 57501-3181 South Dakota Department Of Transportation Transportation Building Pierre SD 57501 South Dakota Network, LLC 2900 West 10th St Sioux Falls SD 57104 South Dakota School For The Visually Handicap 423 17th Ave Southeast Aberdeen SD 57401

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 52 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country South Dakota State Fair Commission Chairman, Administration Office 890 3rd St., S.W. Huron SD 57349 South Dakota Wheat Growers P.O. Box 257 Groton SD 57445 South Dakota Wheat Growers P.O. Box 306 Bristol SD South Dakota Wheat Growers Association Terminal West Aberdeen 205 Van Slyke Bldg Aberdeen SD 57401 Southern Company Energy Marketing L.L.C. 1156 Perimeter Center West, Suite 130 Atlanta GA 30338-5416 Southern Company Energy Marketing L.L.C. 900 Ashwood Parkway Suite 500 Atlanta GA 30338-4780 Southern Energy Trading And Marketing Inc. 900 Ashwood Parkway, Suite 500 Atlanta GA 30338 Measurement, Analytical & Accounting Southern Flow Companies Specialist Bill Partham P.O. Box 51475 Lafayette LA 70505

Southern Montana Electric Generation & Transmission Cooperative, Inc. General Manager 3521 Gabel Road Billings MT 59102

Southern Montana Electric Generation & Transmission Cooperative, Inc. General Manager 3521 Gabel Road Billings MT 59102

Southern Montana Electric Generation & Transmission Cooperative, Inc. General Manager 3521 Gabel Road Billings MT 59102 Southwest Montana Corporation d/b/a North Yellowstone Cable TV, Inc. P.O. Box 707 Gardiner MT 59030 Southwest Montana Corporation d/b/a North Yellowstone Cable TV, Inc. P.O. Box 707 Gardiner MT 59030 Speedway Inc. Attn: President 7 Dey St New York NY 10007 Spherion Corporation 2075 Central Ave Suite D Billings MT 59102 Spiker Communications, Inc. Sheila Kuntz 229 N Main Missoula MT 59801 Spilde, Gerald R.R. 1 Box 144 Estelline SD 57234-9999 Spink Colony R.R.1 Box 84 Frankfort SD 57440 Spink County Cable Terry Thomas Box 84 Redfield SD 57469 Spink County Cable Terry Thomas Box 84 Redfield SD 57469 Spink County Cable Terry Thomas Box 84 Redfield SD 57469 Spink County Cable Terry Thomas Box 84 Redfield SD 57469 Spink Electric 6 East 7th Ave Se Redfield SD 57469 Spooner Construction And Tree Service, Inc. P.O. Box 5104 Missoula MT 59806 Spooner Construction And Tree Service, Inc. P.O. Box 5104 Missoula MT 59806 Springfield Cable, Inc. Norm Schelske Box 434 Springfield SD 57062 Springfield Cable, Inc. Norm Schelske Box 434 Springfield SD 57062 Sprint Communications Company, LP 1200 Main Kansas City MO 64105

SPSS Inc. Dept 77 6531 Chicago IL 60678-6531 SSR Engineers 2334 Lewis Ave P.O. Box 20875 Billings MT 59104 St Francis Medical Center 2620 West Faidley Grand Island NE 68003 St Francis Medical Center (Memorial Health Center) 2116 West Faidley Grand Island NE 68003 St Luke's Hospital 305 S State Street Aberdeen SD 57401 St Patrick's Hospital Occupational And Health P.O. Box 4587 Missoula MT 59806-4587

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 53 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country St Paul Lutheran Church 214 SW 7th Ave Aberdeen SD 57401 St Paul Lutheran Church P.O. Box 787 Aberdeen SD 57402-0787 St Peter Creamery Inc. 119 West Broadway St Peter MN 56082 St Thomas School/Parish 401 N Van Eps Ave Madison SD 57042 St Vincent Healthcare 1233 North 30th St Billings MT 59101 St Vincent Healthcare Karen Neider P.O. Box 35200 Billings MT 59107-5200 St. Joseph Hospital 1200 East 5th St Mitchell SD 57301 St. Joseph Hospital 1200 East 5th St Mitchell SD 57301 St. Patrick Hospital 500 W. Broadway Missoula MT 59802

Star Service Inc. Ronald Carlson P.O. Box 1560 Billings MT 59103-1560 Starlite Café And Truck Stop S Hwy 281 P.O. Box 1127 Aberdeen SD 57402-1127 State Line Contractors, Inc. Karen Derudder P.O. Box 160 Bridger MT 59014-0160 State Of Montana Montana Department Of Transportation 2701 Prospect P.O. Box 201001 Helena MT 59620-1001 Mineral Owners -MT Dept. Of State Of Montana - A.J. Downard Montana Trust For Unlocatable Rev. P.O. Box 5805 Helena MT 59604-5805 Mineral Owners -MT Dept. Of State Of Montana - Charles Magnusson Montana Trust For Unlocatable Rev. P.O. Box 5805 Helena MT 59604-5805 Mineral Owners -MT Dept. Of State Of Montana - Charles P. Keyes Montana Trust For Unlocatable Rev. P.O. Box 5805 Helena MT 59604-5805 State Of Montana - Department Of Transportation Mike Bousliman 2701 Prospect Helena MT 59620 Mineral Owners -MT Dept. Of State Of Montana - Harry Obert Montana Trust For Unlocatable Rev. P.O. Box 5805 Helena MT 59604-5805 Mineral Owners -MT Dept. Of State Of Montana - John A. Clark Montana Trust For Unlocatable Re.v P.O. Box 5805 Helena MT 59604-5805 Mineral Owners -MT Dept. Of State Of Montana - June Beatie Montana Trust For Unlocatable Rev. P.O. Box 5805 Helena MT 59604-5805 Mineral Owners -MT Dept. Of State Of Montana - Mary Jane Johnson Montana Trust For Unlocatable Rev. P.O. Box 5805 Helena MT 59604-5805 Mineral Owners -MT Dept Of State Of Montana - Stephen E Hughes Montana Trust For Unlocatable Rev. P O Box 5805 Helena Mt 59604-5805 Mineral Owners -MT Dept. Of State Of Montana - T.C. Wheeler Montana Trust For Unlocatable Rev. P.O. Box 5805 Helena MT 59604-5805 State Of Montana Dept Of Transportation 2701 Prospect Helena MT 59620-1001 Mineral Owners -MT Dept. Of State Of Montana -Elizabeth Henderson Montana Trust For Unlocatable Rev. P.O. Box 5805 Helena MT 59604-5805 State Of Montana Information Services Division Sam W. Mitchell Building Room 22 Helena MT 59604 State Of Montana, DNRC Minerals Management Bureau Monte Manson P.O. Box 201601 Helena MT 59620 State Of South Dakota Human Services Center Box 76 Yankton SD 57075

State Of South Dakota Commissioner Bureau Of Administration 500 East Capitol Avenue Pierre SD 57501-5070 State Steel Supply 1721 South North Road Grand Island NE 68801 States, Inc. P.O. Box 911 Breckenridge TX 76424 Stene Spray Systems P.O. Box 264 Kevin MT 59454 Stephen Jewett Mckee 59 Longwood Drive San Rafael CA 94901 Sterling Title Services P.O. Box 73 Kalispell MT 59903 Steve Walsh 600 Shields Avenue Butte MT 59701

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 54 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Steven P Berberet Md 310 Wendell Ave Ste 7 Lewistown MT 59457 Steven P Berberet Md 310 Wendell Ave Ste 7 Lewistown MT 59457 Steven W. Balster - General Manager 8470 US 87 East Lewistown MT 59457-9402 Stillwater Mining Company Lewis Cluett 1800 E 1st Ave South Columbus MT 59019 Stillwater Mining Company Manager P. O. Box 1330 Columbus MT 59019 Stillwater Mining Company Attn: Manager Strategic Planning P.O. Box 1330 Columbus MT 59019 Stimson Lumber Company Manager P.O. Box 1120 Bonner MT 59823

Stinger Business Sys Of The Northwest M125 P.O. Box 1150 Minneapolis MN 55480 Stone Container Corp. Mill Manager Frenchtown Mill P.O. Box 4707 Missoula MT 59806-4707 Storage Building In Freeman c/o Haar Box 670 Freeman SD 57029

Strategic Insights, Inc. Suj Krishnaswamy 7312 Beckett Drive NE Cedar Rapids IA 52402 Strongs Crane Service Inc. Doug Strong Doug Strong 41 South 7th St West Billings MT 59102 Structural Systems Inc. Tom Hightower P.O. Box 2069 Missoula MT 59806

Structured Solutions Based Networking 4382 International Way Suite C Portland OR 97222 Suanne L. Knutson P. O. Box 248 Menno SD 57045-0248 Sullivan Brothers Construction Inc. Dan Sullivan 303 N Virginia St Conrad MT 59425

Sullivan Tabaracci & Rhoads John Sullivan 1821 South Ave Missoula MT 59801-6157 Sullway Construction Inc. Dee Sullivan 1695 Legion P.O. Box 4165 Butte MT 59701 Sumatron J.L. Baker 24601 Steffy Dr Laguna Nequel CA 92677 Suneird Aviation Inc. P.O. Box 808 Belgrade MT 59714 Sungard Shareholder Systems 500 Northridge Rd Suite 400 Atlanta GA 30350 Super City Laundromat Ray Kurt Inc. Attn: Kurt Kruger 2201 Southeast Sixth StreetAberdeen SD 57401 Super City Laundromat 2201 Southeast Sixth Street Aberdeen SD 57401 Super City Laundromat 418 S Arch St Aberdeen SD 57401 Super City Mall Shopping Center Attn: Beth Issacson Property Manager 3315 Se 6th Ave Ste 69 Aberdeen SD 57401 Super City Mall Shopping Center 2201 Se 6th Ave Aberdeen SD 57401 Super Steam Inc. P.O. Box 3002 Billings MT 59103 Superintendent Of Municipal Utilities City Of Watertown Watertown SD 57201 Sutton's Sportswear P.O. Box 80010 Billings MT 59108 Syncom 1000 Syncom Dr Mitchell SD 57301 T & M Cable Terry Thomas Box 84 Redfield SD 57469 T & M Cable Terry Thomas Box 84 Redfield SD 57469 T & M Cable Terry Thomas Box 84 Redfield SD 57469 T & M Cable Terry Thomas Box 84 Redfield SD 57469 T & M Cable Terry Thomas Box 84 Redfield SD 57469 T & M Cable Terry Thomas Box 84 Redfield SD 57469 T & M Cable Terry Thomas Box 84 Redfield SD 57469 Tamarack Air Services LLC P.O. Box 747 Victor MT 59875 Target Store 4800 3rd Ave Kearney NE 68847 Target Stores Attn: Manager 3316 SE 6th Ave Aberdeen SD 57401 Target Stores 3316 SE 6th Ave Aberdeen SD 57401 Target Stores Box 1392 Minneapolis MN 55440-1392 Attn: Warren Grew Owner And Dan Grew Taylor Laundry Manager 815 NW 2nd Ave Aberdeen SD 57401 Taylor Laundry 815 NW 2nd Ave P.O. Box 527 Aberdeen SD 57401 Taylor Laundry 815 NW 2nd Ave Aberdeen SD 57401

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 55 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Taylor Laundry 815 NW 2nd Ave Aberdeen SD 57401 Taylor Laundry P.O. Box 527 Aberdeen SD 57402-0527 TC Power, LLC Brian Toegel 2 Old Windsor Road Bloomfield CT 06002 TCF Aerovent Company Attn: Wayne Wienk 515 Commerce Street Aberdeen SD 57401 TCF Aerovent Company 515 Commerce Street Aberdeen SD 57401 TCF Aerovent Company 5959 Trenton Ln Minneapolis MN 55442-3238 TDI Managed Care Services, Inc. d/b/a Eckerd Health Services J John Hatala Cantera Center 620 Epsilon Dr Pittsburgh PA 15238 Team D & S Inc. d/b/a Car Wash Guys Of Bozeman 4555 Shandalyn Lane Bozeman MT 59718

Tech Electric Inc. P.O. Box 1372 Livingston MT 59407-1372

Technology Unlimited Inc. Jeff Parmenter 1179 Andover Park W Seattle WA 99188 Tel Serv, Division Of Norcom Advanced Technologies, Inc. Attn Don C Oberlander 33 Third Street SE Huron SD 57350 Telenational Communications, Inc. Harrison Flora VP Cable Operations P.O. Box 12705 Pensacola FL 32501 Telenational Communications, Inc. Harrison Flora VP Cable Operations P.O. Box 12705 Pensacola FL 32501 Terminal Grain P.O. Box 429 Parker SD 57053-0429 Terracon Consultants Western Inc. 2110 Overland Ave Ste 124 Billings MT 59102

Terracon Inc. Dan Nebel 2110 Overland Ave Suite 2124 Billings MT 59102 Terrence Goodall d/b/a Vunderplow Snowplowing 3135 Paxson Butte MT 59701 Terry Bergman 53195 Brookfield Dr. Elkhart IN 46514-5212 TFS Energy Vivan Mcelheam 17 State Street 41st Floor New York NY 10004

The Broadway Garage Inc. Marty Struznik 226 East Broadway Butte MT 59701 C/O Keily Management Co. The Capital One Center Attn: Dorothy E. Richards LLC P.O. Box 919 Helena MT 59624 The Chen Palace 600 N Main Mitchell SD 57301 The City Of Missoula 435 Ryman Missoula MT 59802 The City Of Redfield 626 N. Main St. Redfield SD 57469-1127 General Manager - PPL Montana, LLC - The Colstrip Steam Electric Station Colstrip Steam Electric Station P.O. Box 38 Colstrip MT 59323 The Cowboy Grind Coffee Co, LLP 482 Creek Hollow Way Florence MT 59833 The Document Company - Xerox P.O. Box 8127 Park Ridge IL 60068 The Electric Co Of South Dakota Inc. Reed Healy 38392 132nd St P.O. Box 1741 Aberdeen SD 57401 The Exchange Ltd 104 South Main St Aberdeen SD 57401 The Global Consulting Group 22 Corland Street 14th Floor New York NY 10017

The Montana Power Company, Colstrip Director, Project Development And 4 Lease Management Division Wholesale Contracts 16 East Granite Butte MT 59701

The Montana Power Company,Colstrip Director, Project Development And 4 Lease Management Division Wholesale Contracts 16 East Granite Butte MT 59701 The Montana Power Power Marketing Company Mike Barnes, Resource Coordinator 40 E. Broadway Butte MT 59701 The Montana Standard Nonie Swan 25 W Granite St Butte MT 59701 The Montana Standard Nonie Swan 25 W Granite St Butte MT 59701

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 56 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country The Montana Standard Nonie Swan 25 W Granite St Butte MT 59701 The National Center For Appropriate Technology 3040 Continental Dr Butte MT 59701 The Northern Trust Co Ron Kerst 50 South Lasalle St. Chicago IL 60675 The Parsec Group 405 Urban St Suite 212 Lakewood CO 80228 The Principal Mutual Life Insurance Company 3025 West College Grand Island NE 68803 The Sexauer Company 107 Chase NE Desmet SD 57231 The Southern Development And Investment Group Inc. 333 Piedmont Ave Bin 10190 Atlanta GA 30308-3374 The Spink Electric Co-Op 17140 U.S. Highway 281 Redfield SD 57469 The Spink Electric Co-Op 17140 U.S. Highway 281 Redfield SD 57469 The Spink Electric Co-Op 17140 U.S. Highway 281 Redfield SD 57469 The Town Of Philipsburg 104 South Sansome - Box 339 Philipsburg MT 59858 The Town Of Suneurst Rita Christoferson P.O. Box 245 Suneurst MT 59482 The Washington Water Power Company P.O. Box 3727 Spokane WA 99220 The Washington Water Power Senior Vice President - Energy Trading P.O. Box 3727 - E. 1411 Company And Market Services Mission Spokane WA 99220-2600 Thomas Dean & Hoskins Inc. David Zahller 1200 25th St South Great Falls MT 59406-5198 Thomas F. Stroock Revocable Trust Thomas F. Stroock Trustee P.O. Box 2875 Casper WY 82602 Thomas Hudak 1244 Miles Ave. Billings MT 59102

Thomas' Inc. Paul Thomas 3636 Harrison Ave Butte MT 59701

Thomas K. Budde (Barney Creek) Mr. James Sievers 2292 East River Road Livingston MT 59047-9144 Thomas L. Kingsland 709 Conifer Trail Lake Almanor CA 96137 Thomas Operating, Inc. (For Information Only - This Was Formerly Ballard Petroleum) Marketing Representative 845 12th Street West Billings MT 59102 Thomas P. McAlpine Box 82 Sweetgrass MT 59484 Thomas P. McAlpine Jr. & Ruby R. McAlpine Box 82 Sweetgrass MT 59484 Thompson Falls High School P.O. Box 129 Thompson Falls MT 59873 Thompson River Co-Gen, LLC C/O Professional Recovery Systems Attn: Barry Bates 285 2nd Ave Wn Kalispell MT 59901 Thompson River Co-Gen, LLC C/O Professional Recovery Systems Attn: Barry Bates 285 2nd Ave Wn Kalispell MT 59901 Thomson Financial Corporate Group 195 Broadway 11th Floor New York NY 10017 Three Forks Cable TV, Inc. P.O. Box 1088 Three Forks MT 59752 Tiber Montana, LLC Attn: Ted Sorenson 5302 South 11th East Idaho Falls ID 83404 Tiber Montana, LLC Attn: Ted Sorenson 5302 South 11th East Idaho Falls ID 83404 Tiber Montana, LLC Attn: Ted Sorenson 5302 South 11th East Idaho Falls ID 83404 Tieszen Home Rr1 Box 209 Marion SD 57043 Tiffany Square 3119 West Faidley Grand Island NE 68803 Tim Gilskey d/b/a K C Welding & Machine Shop 315 Bach St Lewistown MT 59457 Timber Products Inspection Inc. 105 SE 124th Ave Vancouver WA 98684

Timberline Electronics John Oswald 2625 East Sheridan Cody WY 82414 TJ Aguilar P. O. Box 99 Grand Island NE 68802-0099 TMP Interactive Inc. (Monster) Theresa Coffey 22446 Network Pl Chicago IL 60673 Tom Ravert (Tenet) Route 1 Box 275 Grand Island NE 68803

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 57 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Tom Ravert (Tenet) Route 1 Box 275 Grand Island NE 68803 Tongue River Electric Coop Terry M. Holzer - Manager Huntley MT 59037 Tongue River Electric Cooperative, Manager Box 138 Main Street/Hwy.212 Ashland MT 59003

Tony Laslovich Construction 112 Mountain View Anaconda MT 59711 Tony Sandefur 8302 Summerside Drive Austin TX 78759 Toshiba America, Inc. 901 N Forester St Mitchell SD 57301 Total Asphalt V# 106427 6875 Niehenke Ave Billings MT 59101 Total Corrosion Solutions Inc. Jean Or Bob P.O. Box 50988 Billings MT 59105 Touch America Inc. Mike Meldahl 130 N. Main Butte MT 59701 Touch America Inc. Mike Meldahl 130 N. Main Butte MT 59701 Touch America Inc. Mike Meldahl 130 N. Main Butte MT 59701 Touch America Inc. Mike Meldahl 130 N. Main Butte MT 59701 Touch America Inc. Mike Meldahl, 130 N. Main Butte MT 59701 Towers Perrin Gwen Walker 1191 Second Ave Suite 1400 Seattle WA 98101-2933 Town & Country Cable, Inc. Claude Kraft P.O. Box 2 Aberdeen SD 57401 Town & Country Cable, Inc. Claude Kraft P.O. Box 2 Aberdeen SD 57401 Town & Country Cable, Inc. Claude Kraft P.O. Box 2 Aberdeen SD 57401 Town & Country Cable, Inc. Claude Kraft P.O. Box 2 Aberdeen SD 57401 Town & Country Cable, Inc. Claude Kraft P.O. Box 2 Aberdeen SD 57401 Town & Country Cable, Inc. Claude Kraft P.O. Box 2 Aberdeen SD 57401 Town & Country Cable, Inc. Claude Kraft P.O. Box 2 Aberdeen SD 57401 Town & Country Cable, Inc. Claude Kraft P.O. Box 2 Aberdeen SD 57401 Town & Country Cable, Inc. Claude Kraft P.O. Box 2 Aberdeen SD 57401 Town Of Kevin Anita Feland P.O. Box 274 Kevin MT 59454 Town Of Philipsburg P.O. Box 339 Philipsburg MT 59858-0339

Town Pump Inc. Cy Kohn 600 S Main St Butte MT 59701 Townsend Agricultural Service d/b/a Belfry Cable TV P.O. Box 687 Cowley WY 82420

Tp Construction Inc. Box 591 Havre MT 59501-0591 Trademark Electric Inc. Leon Shaffer P.O. Box 3786 Butte MT 59702 Trademark Electric, Inc. Leon Shaffer P.O. Box 3786 Butte MT 59702 Trail King Industries, Inc. 300 L Norway Ave Mitchell SD 57301 Trail King Industries, Inc. P.O. Box 1064 Mitchell SD 57301 Trans Tech Inc. Gary Scherr 2233 South Garfield Rd Airway Heights WA 99204 Box 1900 Station A - 110 12Th Translate Energy Marketing (US) Inc. Craig Reagan Ave. S. W. Calgary Alberta T2P 2M1 Canada Box 1900 Station A - 110 12th Translate Energy Marketing (US) Inc. Craig Reagan Ave. S.W. Calgary Alberta T2P 2M1 Canada Transmission Access Analyst 1099 18th Street, 30th Floor Denver CO 80202 Transmission Committee C/O Steve Luther - NWE 40 E Broadway Butte MT 59701 Transmission Contract Administration 2533 N. 117th Ave Omaha NE 68164 Trend 10101 N. De Anza Blvd. Cupertino CA 95014 Triangle Properties Richard Doran P.O. Box 501 Hardin MT 59034 Triangle Telephone Coop 2121 Hwy 2 NW Havre MT 59501 Triangle Telephone Coop 2121 Hwy 2 NW Havre MT 59501 Triangle Telephone Coop 2121 Hwy 2 NW Havre MT 59501

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 58 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Triangle Telephone Coop 2121 Hwy 2 NW Havre MT 59501 Triangle Telephone Coop 2121 Hwy 2 NW Havre MT 59501 Triangle Telephone Cooperative Association, Inc. P.O. Box 1202 Havre MT 59501

Tri-County Mechanical & Electrical, Inc. 3139 Bozeman Ave Helena MT 59601 Tripp City Swimming Pool P.O. Box 428 Tripp SD 57376-0428 Trista'S Lawn Service P.O. Box 179 Belt MT 59412 Tru Green Chemlawn P.O. Box 80345 Billings MT 59108-0345 Turner Co Courthouse P.O. Box 368 Parker SD 57053-0368 Turner County - Hiway Department P.O. Box 548 Parker SD 57053-0548 Twin Bridges Public School P.O. Box 419 Twin Bridges MT 59754 Twin City Fan And Blower Co 101 Sunrise Ridge Road Brookings SD 57006 Twin City Fan And Blower Co 130 Sunrise Ridge Road Brookings SD 57006 Twin City Fan Axial Division, Inc. 550 Ksota Ave St Minneapolis MN 55414 Two Dot Wind Energy LLC (Mission Creek) David G. Healow 652 Park Lane Billings MT 59102-1931 U S Post Office The Village Bowl Nw 8th Ave Aberdeen SD 57401 U S Post Office 1202 S 5th St Aberdeen SD 57401 U S West Communications Inc. Attention Joint Use Administration 6912 South Quentin Street Suite 101 Englewood CO 80112 Underground Utility Locating Inc. 222A North Marion Rd Sioux Falls SD 57107 Union Pacific Land Resources Corporation Suite 1000 110 North Fpurteenth Street Omaha NE 68102

Union Pacific Railroad (Wash Facility) Box 1605 Omaha NE 68101-1605 Union Pacific Railroad (West Tower) Box 1611 Omaha NE 68101-1611 United Airlines Inc. WHQSS North America Sales 1200 E Algonquin Rd Elk Grove Township IL 60007 United Defense Attn: Jerry Glammeier P.O. Box 1947 Aberdeen SD 57402-1947

United Rentals Inc. Keri Holleneack 1315 Clark Fork Ln Missoula MT 59808 United Rentals Inc. 1315 Clark Fork Ln Missoula MT 59808 United States Department Of Energy Western Area Power Administration Pick-Sloan Missouri Basin, Eastern Division Regional Manager P.O. Box 35800 Billings MT 59107 United States Department Of The Interior Bureau Of Reclamation Upper Missouri Region P.O. Box 2553 Billings MT 59103 United States Government Finance Division 8Bc Building 41 Dfc Denver CO 80225 United States Of America Bureau Of Land Management Pascual Laborda 5001 Southgate Dr Billings MT 59170-6800 United States Of America Bureau Of Land Management Pascual Laborda 5001 Southgate Dr Billings MT 59170-6800 United States Of America Acting Through The Administrator Of General Office Of Government wide Services Public Utilities Division Real Property Policy General Services AdministrationWashington DC 20405 United States Of America Acting Through The Administrator Of General Services Federal Building Attn: Contracting Officer 115 4th Ave SE Aberdeen SD 57402 United States Petroleum Corp c/o Ellen Green 8437 Katy Lane Bainbridge Island WA 98110-4191 Unity Square E Hwy 12 Milbank SD 57252 University Of Great Falls Tom Trunkle 1301 20th St S Great Falls MT 59405 University Of Montana Tom Gustin P.O. Box 200135 Helena MT 59620-0135 University Of Montana - Western Pat Yeager 710 S Atlantic Dillon MT 59725-3598

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 59 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Uponor Aldyl, Gene Lawhead 7901 North Kickapoo Shawnee OK 74801 Omaha District Corps Of US Army, Corps Of Engineers Department Of The Army Engineers 6014 Us Post Office And CourthouseOmaha NE 68102 US West 15 SW 4th Ave Aberdeen SD 57401 US West Atth Assistant Manager Real Estate 3841 70th Street Des Moines IA 50322-3219 US West 3841 70th Street Des Moines IA 50322-3219

US West Communications, Inc c/o US West Business Resources, Inc 2800 Wayzata Blvd. Room 350 Minneapolis MN 55405 US West Communications, Inc. 701 N Main St 1St Floor Helena MT 59601 6912 South Quentin Street US West Communications, Inc. Attn: Joint Use Administration Suite 101 Englewood CO 80112 U-Save Foods P.O. Box 769 North Platte NE USF Reddaway Steve Smith 10762 Hwy, 287 Three Forks MT 59752 Utility Consulting Services Inc. Cory P. Clarke 102 West Bowman Kalispell MT 59901 255- 5th Ave. S.W. Suite 2500 Bow V.P. Operations And Engineering Valley Square III Calgary Alberta T2P 366 Canada Vans Incorporated d/b/a Vans Evergreen Iga 1540 13th St West Billings MT 59102 Verasun Energy Corporation 100 22nd Avenue Suite 103 Brookings SD 57006

Veritas - Software Global Corporation 350 Ellis St. Mountain View CA 94043 Videotronics, Inc. Mike Bedsaul Box 26 Stickney SD 57375 Videotronics, Inc. Mike Bedsaul Box 26 Stickney SD 57375 Videotronics, Inc. Mike Bedsaul Box 26 Stickney SD 57375 Vigilante Electric Cooperative General Manager 225 East Bannack Street P.O. Box 71 Dillon MT 59725

Vigilante Electric Cooperative, Inc. General Manager P.O. Box 71 - 225 E. Bannack Dillon MT 59725-0071 Village Cable Television Jack Bush P.O. Box 220 Burke SD 57523 Village Cable TV Of Lake Andes P.O. Box 620 Redfield SD 57469 Village Cable TV Of Lake Andes P.O. Box 620 Redfield SD 57469 Village Cable, Inc. Terry Thomas Box 84 Redfield SD 57469 Village Cable, Inc. Terry Thomas Box 84 Redfield SD 57469 Village Cable, Inc. Terry Thomas Box 84 Redfield SD 57469 Village Cable, Inc. Terry Thomas Box 84 Redfield SD 57469 Village Cable, Inc. Terry Thomas Box 84 Redfield SD 57469 Village Cable, Inc. Terry Thomas Box 84 Redfield SD 57469 Village Cable, Inc. Terry Thomas Box 84 Redfield SD 57469 Village Cable, Inc. Terry Thomas Box 84 Redfield SD 57469 Village Cable, Inc. Terry Thomas Box 84 Redfield SD 57469 Village Inn 2624 South Locust Grand Island NE 68801 Village Of Alda, Nebraska P.O. Box 100 Alda NE 68810-0100 Virginia D Rozum Trust Richard Cutler 600 East 6th Mitchell SD 57301 Virginia D. Rozum Trust 920 W Norway Apt. 306 Mitchell SD 57301 Vision Net, Inc. P.O. Box 3068 Great Falls MT 59403 Vision Service Plan Steve Hanks One Union Square Bldg University St Ste 2004 Seattle WA 98101 Vision Service Plan Steve Hanks One Union Square Bldg University St Ste 2004 Seattle WA 98101 Vivid Networks P.O. Box 81487 Billings MT 59108 Vivid Networks P.O. Box 81487 Billings MT 59108 Voice Print International Inc. 800 Calle Plano Camarillo CA 93012 VP Regulatory Affairs 40 E Broadway Butte MT 59701 W. Lawrence Clark 10311 W. Ocotillo Dr. Sun City AZ 85373-1645

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 60 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country W. P. Werner 7726 East Laguna Azul Mesa AZ 85208 Wade Omeyer d/b/a A1 Sanitation P.O. Box 5371 Kalispell MT 59901 Wallace Farmers Elevator Company P. O. Box 7 Garden City SD 57236

Wally's Overhead Company Wally Anderson P.O. Box 100 Black Eagle MT 59414 Wal-Mart Store Attn: Assistant Director Ems 701 S Walton Blvd Bentonville AR 72716-0154 Wal-Mart Stores #1326 3530 West 13th Grand Island NE 68803 Wal-Mart Stores #6461 1510 Diers Avenue Grand Island NE 68801 Wal-Mart Stores Inc. 1520 3315 SE 6th Ave Aberdeen SD 57401 Wal-Mart Stores Inc. 1520 Dept 8702 Construction 701 S Walton Blvd Bentonville AR 72716 Walter Construction Hc 72 Box 75 Browning MT 59417-0075 Walter Wiese Route 1 Alda NE 68810 Warm Springs State Hospital Tom Gustin P.O. Box 200135 Helena MT 59620-0135 Warner Coop Elevator P.O. Box 76 Warner SD 57479-0076 Water & Environmental Technologies LLC 305 West Mercury St Butte MT 59701 Watertown Municipal Utilities Jeff Heig 901 Fourth Ave SW Watertown SD 57201

Wayne And Janette Gronvold 55 E. Granite Butte MT 59701 Wayne D. And Janette K. Granvold Parking Lot Lease Agreement - January 1, 2003 Wayne D Granvold 55 E Granite Butte MT 59701 Wayne D. And Janette K. Gronvold 55 E Granite Butte MT 59701 Wayne M Hitt 16467 Ranceo De Kevin Road Ramona CA 92065 Wayne S Heath d/b/a Frontier Construction 11699 Gooch Hill Rd Gallatin Gateway MT 59730

Weatherbank Inc. Attn: Mr. Steven A Root President/CEO 1015 Waterwood Pkwy Ste J Edmond OK 73034 Weatherbank Inc. 1015 Waterwood Parkway Ste J Edmond OK 73034 Weatherbank, Inc. Steven Root 1015 Waterwood Pkwy Stej Edmond OK 73034 Weatherford International Inc. Gary Warne 515 Post Oak Blvd St Suite 600 Houston TX 77027

University Of Utah Research Park 615 Arapeen Drive, Suite WECC Bob Dintelman 210 Salt Lake City UT 84108-1253

Wecc Agreement And By-Laws Western Electricity Coordinating Council Bob Dintelman University Of Utah, 540 ArapeenSalt Lake Drive City Suite 210 UT 84108-1288 Wecc Reliability Management System University Of Utah, 540 Agreement (RMS) Bob Dintelman Arapeen Drive, Suite 210 Salt Lake City UT 84108-1288 Weideneach Construction P.O. Box 646 Parkston SD 57366 Wells Fargo Bank Minnesota, National Association Wells Fargo Shareowner Services Attn: Account Manager 161 N Concord ExchangeSouth St Paul MN 55075 Wells Fargo Bank Minnesota, National Attn: Northwestern Corp Association Shareowner Services Account Manager 161 N Concord ExchangeSouth St Paul MN 55075 Wells Fargo Bank Minnesota, National Attn: Northwestern Corp Association Shareowner Services Account Manager 161 N Concord ExchangeSouth St Paul MN 55075 Wells Fargo Investments LLC 161 North Concord Exchange South St Paul MN 55075 Wells Fargo Merchant Card Services, One Western Maryland LLC Sue Montgomery Parkway Hagerstown MD 21740 Wells Fargo Merchant Service, LLC Attn: Sue Montgomery 1 Western Maryland Pkwy Hagerstown MD 21740

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 61 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Wells Fargo Shareowner Services P.O. Box 64875 St. Paul MN 55164-0875 Wendt Kochman P.O. Box 2129 Great Falls MT 59404 Wendy's 1808 S. Locust Grand Island NE 68801 Wenk Foods Box 368 Madison SD 57042 Wenk Foods Box 368 Madison SD 57042 Wenk's Produce Inc. Box 368 Madison SD 57042 Werner Independent School Box 20 Warner SD 57479 Werner Independent School Box 20 Warner SD 57479 Wesco Dan Sheilds 949 South Montana Butte MT 59701 West Central Power Cooperative Dean Nelson P.O. Box 412 Wall SD 57790 West Plains Home Attn: Peggy Pfaff 1902 North Dakota Street Aberdeen SD 57401 West Plains Home 1902 North Dakota Street Aberdeen SD 57401 West Side Launder 1603 SW 6th Ave Aberdeen SD 57401

Westcoast Gas Services (America) Inc. 7th Ave SW Ste 1100 Calgary Alberta T2P 4K9 Canada Westcoast Gas Services #1100. 421 7th Avenue SW Calgary Alberta T2P 3Y7 Canada Westcoast Gas Services #1100. 421 7th Avenue SW Calgary Alberta T2P 3Y7 Canada Westcoast Gas Services #1100. 421 7th Avenue SW Calgary Alberta T2P 3Y7 Canada

Westcoast Gas Services (America) Inc. 7th Ave SW Ste 1100 Calgary Alberta T2P 4K9 Canada

Westcoast Gas Services (America) Inc. 7th Ave SW Ste 1100 Calgary Alberta T2P 4K9 Canada Western Area Power Administration Operations Manager P.O. Box 790 Watertown SD 57201 Western Area Power Administration Operations Manager P.O. Box 790 Watertown SD 57201 Western Area Power Administration Operations Manager P.O. Box 790 Watertown SD 57201 Western Area Power Administration Rocky Mountain Region Area Manager P. O. Box 3700 Loveland CO 80539

Western Area Power Administration Bob Riehl P.O. Box 35800 Billings MT 59107-5800

Western Area Power Administration Bob Riehl P.O. Box 35800 Billings MT 59107-5800

Western Area Power Administration Bob Riehl P.O. Box 35800 Billings MT 59107-5800

Western Area Power Administration Bob Riehl P.O. Box 35800 Billings MT 59107-5800

Western Area Power Administration Bob Riehl P.O. Box 35800 Billings MT 59107-5800 Western Area Power Administration Bob Riehl P.O. Box 35800 Billings MT 59107-5800 Western Area Power Administration Power Marketing Manager P.O. Box 35800 Billings MT 59107-5800 Western Area Power Administration P.O. Box Egy Billings MT 59101

Western Area Power Administration Sam Miller 2900 4th Ave. North P.O. Box 35800 Attn: B2100Billings MT 59107-5800 Western Area Power Administration Power Marketing Manager P.O. Box 35800 Billings MT 59107-5800 Western Area Power Administration Upper Great Plains Region Power Marketing Manager P.O. Box 35800 Billings MT 59107-5800 Western Area Power Administration, Sam Miller 2900 4th Ave. North P.O. Box 35800 Attn: B2100Billings MT 59107-5800 Western Cable TV Richard Mierva P.O. Box 704 Butte MT 59702 Western Electricity Coordinating Counsel 615 Arapeen Drive, Suite 210 Salt Lake City UT 84108-1262 Western Energy P.O. Box 99 Colstrip MT 59323

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 62 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Attn: Vice President And General Manager Of Montana And Wyoming Western Energy Company Operations 115 N. Broadway P.O. Box 1899 Billings MT 59103 Western Finance & Lease P.O. Box 640 Devils Lake ND 58301

Western Montana Engineering Jim Beauchamp 602 S Crystal Butte MT 59701 Western Montana Publishing (The Missoulian) Dan Doyle P.O. Box 8029 Missoula MT 59807 Western Sign Lisa Sims 1414 Havre Highway Black Eagle MT 59414 Jo Huetter Office Manager Wayne Western States Abatement Inc. President P.O. Box 16105 Missoula MT 59808-6105 Western Telecommunications, Inc 5619 Dtc. Parkway Englewood CO 80111 Western Telecommunications, Inc. 5619 DTC Parkway Englewood CO 80111 Western Telephone Company 111 9th Avenue North P O Box 128 Faulkton SD 57438 Westmoreland Resources, Inc. First Interstate Center, Suite 1620 401 North 31st Street P.O. Box 7078 Billings MT 59103 Wgm Group Inc. Jim Weatherly P.O. Box 16027 Missoula MT 59808-6027 Wgm Group Inc. Woody Germany P.O. Box 16027 Missoula MT 59808-6027 Wheeler's Retail Store P.O. Box E Grand Island NE Whetstone Valley Electric E Highway 12 Milbank SD 57252 White House Inn 500 SW 6th Ave Aberdeen SD 57401 Whitt Construction Janelle Whitt P.O. Box 233 Kevin MT 59454 Wildwood Landscaping Inc. P.O. Box 160322 Big Sky MT 59716 William C. Kaufman III 2722 Westerwood Drive Baton Rouge LA 70816 William G. Cummings, Jr. 1829 Nottingham Lane Clearwater FL 33546 William Marshall Nichols c/o Northwestern Energy 40 East Broadway Butte MT 59701 William R Lane Construction Inc. P.O. Box 56 Toston MT 59643 William Street Rr 2 Box 535 Milbank SD 57252-9318 William T. Rogers P.O. Box 2874 Casper WY 82602 Williams & Associates, LLC Attn: Kenneth L. Williams 18712 Shremor Dr. Derwood MD 20855 Williams Flower Company 211 South Locust Grand Island NE 68801

Williamson Fencing & Sprinklers Inc. Dave Williamson 1325 Central Ave West Great Falls MT 59404 Williston Basin Interstate Pipeline Company Transportation Dept 200 North Third Street Suit300 Bismarck ND 58501 Wilson Conrete 3200 West Bachman Grand Island NE 68803 Winzip Computing, Inc. P.O. Box 540 Mansfield CT 06268 Wiper Towel Service 111 East 6th Grand Island NE 68801 Wookey Consulting 702 West 11th Ave Webster SD 57274 Wright And Sudlow P.O. Box 1782 Aberdeen SD 57402-1782

WWC Holding Co Inc. 3650 - 131 St. Avenue SE, Suite 400 Bellevue WA 98606 Xenergy Inc. 639 Helena Ave Suite X Helena MT 59601 Xenergy Inc. 639 Helena Ave Suite X Helena MT 59601 Xerox Capital Services 350 S. Northwest Hwy P.O. Box 8127 Park Ridge IL 60068 Xerox Corporation P.O. Box 8127 Park Ridge IL 60068 Xesystems, Inc. 300 Main St Suite 898-03A East Rochester NY 14445 Xpedx Dave Smith P.O. Box 21195 Billings MT 59104-1195 Yellowstone Air Service Inc. P.O. Box 666 Big Timber MT 59011 Yellowstone Concrete Cutting Inc. P.O. Box 81066 Billings MT 59108-1066 Yellowstone Valley Electric Yellowstone Valley Electric Coop Terry M. Holzer - Manager Coop, Inc. P.O. Box 249 Huntley MT 59037

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 63 of 64 00014054 Exhibit B Service List

Counterparty Name Address1 Address2 Address3 City State Zip Country Yellowstone Valley Electric Yellowstone Valley Electric Coop Terry M. Holzer - Manager Coop, Inc. Box 249 Huntley MT 59037 Yellowstone Valley Electric Cooperative Inc. Mr. Howard Stanley Manager Huntley MT 59037 Yellowstone Valley Electric Cooperative, Inc. Terry Holzer, General Manager 150 Cooperative Way P.O. Box 249 Huntley MT 59037

YMCA Attn: Robert Masters Executive Director 420 S Lincoln St Aberdeen SD 57401 YMCA 420 S Lincoln St Aberdeen SD 57401

Young Broadcasting Of Sioux Falls Inc. James A Morgan Executive VP CFO 599 Lexington Ave New York NY 10022 Young Men's Christian Association 420 S Lincoln St Aberdeen SD 57401

Zacha Underground Construction Co 1355 Summerdale Rd Corvallis MT 59828 Zoot Properties LLC 1115 North 7th Ave Bozeman MT 59715 Zoot Properties LLC Bruce Nelson 555 Zoot Enterprises Lane Bozeman MT 59718 3317 8th Ave NE Aberdeen SD 57401

In re: NorthWestern Corporation 9/25/2004 12:35 PM USBC Case No. 03-12872 (CGC) Page 64 of 64 00014054