Ham ilton Co llege
January 2009 Greenhouse Gas (GHG) Emissions – A Common Vocabulary Simplifying the Types of GHG Emissions All Expressed as Metric Tons of Carbon Dioxide (MTeCO2)
Scope 2: Emissions from utility Scope 1: Emissions from the Scope 3: Indirect emissions production not at the institution direct activities of the includinggp transportation, campus waste disposal, etc.
3 This slide courtesy of CA-CP Greenhouse Gas (GHG) Emissions at Hamilton College Hamilton’s Space and Population
Gross Square Footage Total Campus GSF 1,846 ,425
Student Population Total FTE Enrollment 1,831
Staff &Faculty Population Faculty 236 Staff 496 Total Faculty & Staff 732
5 Scope 1 Scope 2 Scope 3 Offsets
• Natural Gas •Purchased •Faculty/Staff • Renewable Electricity Commuting Energy Credits • Distillate Oil •Air Travel • Vehicle Fleet • Solid Waste • Fertilizer •Refrigerants
6 Gross Carbon Emissions by Type Gross Carbon Emissions by Scope
004%.4% 12,000 3% 10,000 13% 27% 8,000 2
8% 6,000 MTeCO
3% 4,000
2,000
0 45% Scope 1 Scope 2 Scope 3 Emissions Emissions Emissions On-Campus Stat. Elec. Fleet Commute Air Travel Waste Other
7 Net Carbon Emissions by Type Net Carbon Emissions by Scope
004%.4% 12,000 4% 10,000 14% 28% 8,000 2
8% 6,000 MTeCO
4% 4,000
Offsets reduce total emissions by 5.5% 2,000
0 42% Scope 1 Scope 2 Scope 3 Emissions Emissions Emissions On-Campus Stat. Elec. Fleet Commute Air Travel Waste Other 30,000 220.0
1.8 25,000 1.6
1.4 20,000 1.2
15,000 1.0
0.8 10,000 0.6
0.4 5,000 0.2
0 0.0 FY2003 FY2004 FY2005 FY2006 FY2007 FY2008 Scope 3 5,918 5,835 5,714 5,769 5,925 5,886 Scope 2 9,707 9,569 9,987 10,427 11,141 10,848 Scope 1 6,199 6,926 7,170 6,845 7,452 7,322 Campus GSF 1,643,133 1,664,167 1,706,018 1,798,176 1,840,510 1,856,425 30,000 220.0
1.8 25,000 1.6
1.4
20,000 s) 22 nn 1.2
15,000 1.0 MTeCO 0.8 10,000 0.6 millio SF (in GG 0.4 5,000 0.2
0 0.0 FY2003 FY2004 FY2005 FY2006 FY2007 FY2008 Scope 3 5,918 5,835 5,714 5,769 5,925 5,886 Scope 2 9,707 9,569 9,901 10,345 10,793 9,520 Scope 1 6,199 6,926 7,170 6,845 7,452 7,322 Campus GSF 1,643,133 1,664,167 1,706,018 1,798,176 1,840,510 1,856,425
Air travel estimated for FY03-06
10 Utilities – The Major Greenhouse Gas (GHG) Contributor at Hamilton Fossil – Scope 1; electricity – Scope 2
140,000
120,000
100,000
80,000 BTU’s Fossil MM 60,000 M Electric
40,000
20, 000
0 FY2003 FY2004 FY2005 FY2006 FY2007 FY2008
Natural Gas and Oil Total Carbon Emissions: 6,430 MTeCO2 - 26% of ‘08 total Electricity Total Carbon Emissions: 10,848 MTeCO2 - 45% of ‘08 total
12 National Electric Fuel Mix
13 Carbon Emissions by Grid Hamilton Benefits from a “Clean” Power Grid Impact of Regional Fuel Mix for Hamilton
30,000
25,000
20,000 22
15,000 MTeCO
10,000
5,000
0 SPNO Actual Hamilton NWPN MTeCO2 Assume Highest Carbon Assume Lowest Carbon
16 Natural Gas Conversions Could Have a Big Carbon Impact at Hamilton
140 •Assuming a one-to-one 120 btu “swap” 100 80 •Converting electric systems to natural gas 60 could reduce carbon MTeCO2 40 emissions significantly 20 0 1,000 MMBTU of Grid 1,000 MMBTU of Natural Electricity Gas Other Greenhouse Gas (GHG) Contributors at Hamilton Source ‘08 Units MTeCO2 % Total Students: 3,235,280 miles Air Travel 3,189 13% Faculty: 869,400 miles
19 Study abroad and faculty research Air Travel – Scope 3
Institutions Shown
GHG Emissions from Air Travel Babson College 2.0 Bentley University 1.8 Clemson University
r Gallaudet University ee 161.6 Hampshire College 1.4 Le Moyne College
1.2 Loyola Marymount University
1.0 Pacific Lutheran University
/ Campus Us 080.8 Rowan University 2 0.6 Texas A&M University University of Arkansas 0.4 MTeCO University of Denver 0.2 University of Notre Dame
000.0 University of Portland ABCD FGHI JKLMNOPQ Virginia Commonwealth University
Wesleyan University Gross Emissions
20 Other Greenhouse Gas (GHG) Emissions Sources Scope 3
Days per Average year a miles a Number of NbNumber o f flt/tfffaculty/staff flt/tfffaculty/staff titrips /day per TtlTotal faculty/staff member member faculty/staff Mileage commutes commutes member to campus per trip
Staff: 496 Staff: 250 Staff: 10.5 Staff: 2.56 Staff: 3,215,028 FltFaculty: 236 FltFaculty: 250 Faculty: 10.5 FltFaculty: 2562.56 FltFaculty: 1, 407, 019
Total Fuel Faculty/Staff Total Mileage Efficiency fuel consumption
Staff: 3,215,028 Staff: 22.10 mpg Staff: 145,476 Faculty: 1,407,019 Faculty: 22.10 mpg Faculty: 63,666
Faculty/Staff Total Carbon Emissions 1,869 MTeCO2 – 8% of ‘08 Total
22 Commuting emissions vs. database Residential campus reduces commuting miles
20
18
16
14 User ss 12
10 /Campu 2 8 eCO TT 6 M
4
2
0
Gross Emissions
23 Commuting emissions vs. database Residential campus reduces commuting miles
Compared with other residential colleges 5
4 User ss 3 /Campu 2 2 eCO TT M
1
0
Gross Emissions
24 Solid waste – Scope 3
1,100 1,000 900 800 700 600 rt Tons 500
Sho 400 300 200 100 0 FY2003 FY2004 FY2005 FY2006 FY2007 FY2008
Natural Gas and Oil Total Carbon Emissions: 829 MTeCO2 - 3% of ‘08 total 10% reduction since FY2003
25 Fossil - Scope 1
100,000 90,000 80,000 70,000 60,000 llons
aa 50,000 Diesel G 40,000 Gasoline 30,000 20,000 10,000 0 FY2003 FY2004 FY2005 FY2006 FY2007 FY2008
Vehicle Fleet Carbon Emissions: 810 MTeCO2 - 3% of ‘08 total
26 Refrigerants – Scope 1
160
140
120
100 HFC-134a unds 80 oo
P HFC-404a 60 HFCFC-22 40
20
0 FY2005 FY2006 FY2007 FY2008
Refrigerant Use: 69 MTeCO2 - <1% of ‘08 total
27 Fertilizer application Scope 1
Source ‘08 Units MTeCO2 % of Total Fertilizers 3,149 lbs. Nitrogen 12 <1%
28 3,193,120 kWh of green power purchased
Offset Amount MTeCO2 REC 3,193,120 1,329
29 Comparing Greenhouse Gas (()GHG) Emissions – Summary Benchmarks Benchmark institutions
Institutions Location Babson College Babson Park, MA Bentley University Waltham, MA Bowdoin College Brunswick, ME Carleton College Northfield, MN Grinnell College Grinnell, IA St. Lawrence University Canton, NY Wesleyan University New London, CT Williams College Williamstown, MA
31 GreenLine institutions nationwide
GreenLine Institutions GreenLine Institutions Babson College Santa Clara University Bentley University Seattle University Bowdoin College Southern Methodist University Carleton College St. Lawrence University Clemson University Texas A&M University Davidson College University of Arkansas Eckerd College University of Denver Fitchburg State College University of Maryland – College Park Gallaudet University University of Notre Dame Grinnell College Universityyg of Oregon Hamilton College University of Portland Hampshire College University of Redlands Lewis & Clark College University of San Diego Loyygyola College in Maryland University of Vermont Loyola Marymount University Virginia Commonwealth University Oregon Institute of Technology Washington and Lee University Pacific Lutheran University Wesleyan University Portland State University Western Oreggyon University Rowan University Williams College
32 Average Emissions per 1,000 GSF v. Peers Offsets put emissions well below peer average
33 Offsets Put Emissions Below Average Nationwide – Hamilton is Also Below Average Emissions per student FTE is a Function of Density Schools Like Hamilton are Less Dense than Others Concluding thoughts
• FY2008 saw a 2% reduction in gross carbon emissions from an all-time high in FY2007.
• Hamilton benefits from a “clean” electric grid, but could benefit from reduced electric consumption.
• Converting from electric to fossil in campus buildings could have substantial carbon payback.
• Gross emissions track very closely with campus growth. Addition of new space should be coordinated with sustainability initiatives.
• Tracking student miles traveled between home and school would ggpppive a more complete picture of the transportation element of the emissions study.
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