2019 DPM Change Request - Eastern Region

System Data Work Group (SDWG) Data Preparation Manual Change Request Eastern Region Bus number alignment

1. Change Summary

This change requests moving the 72xxx range currently assigned to the PSC Area to TSGT member system in the WAPA R.M. Area. Also, requesting addition of a new bus range to the PSC Area post this change to make up for the lost bus number range. PSCo is submitting this request on behalf of all the Eastern Region members.

2. Schedule

Incorporate language into DPM: Nov 2018 for inclusion in 2019 DPM

Adherence to revised DPM language: 2018 base case creation schedule

3. Detailed Description

Historically, the 72xxx range bus numbers have been used by TSGT to model their system in the WAPA R.M. area as they are not assigned a range in the WAPA R.M. region. In order to align the bus assignment in Appendix-2 of the DPM with the base case modeling, PSC is requesting the change as noted in the table below. Also, since the PSC region will be losing a bus number range, requesting assigning the 77,000-78,999 bus range to the PSC region for use by WPE, TSGT and PSC.

Benefits

The following benefits are intended by completing the proposed DPM change request:

 Consistency in Bus assignment and base case representation for TSGT

 Adequate bus range available for PSC region for future additions

 Not applicable

Alternatives

No alternatives from the proposed change exist.

WESTERN ELECTRICITY COORDINATING COUNCIL 155 North 400 West, Suite 200 Salt Lake City, Utah 84103-1114 DPM Change Request2

4. Proposed Edits

The following modifications to the presenting approved DPM are proposed to implement the change being requested. Change language in red:

Appendix 2 – Area, Zone and Bus Number Assignments

Eastern Region

Area No. Zone Range Area Name Member System Member System Bus 70 700 – 7129 PSColorado PSC, WPE, TSGT 70,000 – 70,999 770 - 789 700,000 – 709,999 7000 – 71299 7700 - 7899 71,000 – 71,999 710,000 – 719,999 77,000 – 78,999 770,000 – 789,999 72,000 – 72,999 720,000 – 729,999 73 72030 – 7699 WAPA R.M. TSGT 72,000 – 72,999 790 - 799 720,000 – 729,999 72300 – 79699 7900 - 7999 WALM 73,000 – 73,999 730,000 – 739,999 BHPL 74,000 – 74,999 740,000 – 749,999 PRPA 75,000 – 75,999 750,000 – 759,999 BEPC 76,000 – 76,999 760,000 – 769,999 WAUC 79,000 – 79,999 790,000 – 799,999

W E S T E R N E L E C T R I C I T Y C O O R D I N A T I N G C O U N C I L