Greenhouse Gas (GHG) Emissions A Common Vocabulary

Transcription

1 Hamilton College January 2009

2 Greenhouse Gas (GHG) Emissions A Common Vocabulary

3 Simplifying the Types of GHG Emissions All Expressed as Metric Tons of Carbon Dioxide (MTeCO2) Scope 2: Emissions from utility production not at the institution Scope 1: Emissions from the direct activities of the campus Scope 3: Indirect emissions including transportation, waste disposal, etc. This slide courtesy of CA-CP 3

4 Greenhouse Gas (GHG) Emissions at Hamilton College

5 Hamilton s Space and Population Gross Square Footage Total Campus GSF 1,846, Student Population Total FTE Enrollment 1,831 Staff &Faculty Population Faculty 236 Staff 496 Total Faculty & Staff 732 5

6 Scope 1 Scope 2 Scope 3 Offsets Natural Gas Distillate Oil Vehicle Fleet Fertilizer Purchased Electricity Faculty/Staff Commuting Air Travel Solid Waste Renewable Energy Credits Refrigerants 6

7 Gross Carbon Emissions by Type Gross Carbon Emissions by Scope 0.4% 04% 12,000 3% 13% 27% 10,000 8,000 8% MTeCO 2 6,000 3% 4,000 2,000 45% On-Campus Stat. Elec. Fleet Commute Air Travel Waste Other 0 Scope 1 Emissions Scope 2 Emissions Scope 3 Emissions 7

8 Net Carbon Emissions by Type 0.4% 04% 12,000 4% 10,000 14% 28% 8,000 8% 6,000 MTeCO 2 Net Carbon Emissions by Scope 4% 4,000 Offsets reduce total emissions by 5.5% 2,000 42% On-Campus Stat. Elec. Fleet Commute Air Travel Waste Other 0 Scope 1 Emissions Scope 2 Emissions Scope 3 Emissions

9 30, ,000 20,000 15,000 10,000 5,000 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,

10 30, , MTeCO 2 20,000 15,000 10, GSF (in million ns) 5, 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, Air travel estimated for FY

11 Utilities The Major Greenhouse Gas (GHG) Contributor at Hamilton

12 Fossil Scope 1; electricity Scope 2 140, ,000 MM MBTU s 100,000 80,000 60,000 40,000 Fossil Electric 20, FY2003 FY2004 FY2005 FY2006 FY2007 FY2008 Natural Gas and Oil Total Carbon Emissions: 6,430 MTeCO 2-26% of 08 total Electricity Total Carbon Emissions: 10,848 MTeCO 2-45% of 08 total 12

13 National Electric Fuel Mix 13

14 Carbon Emissions by Grid

15 Hamilton Benefits from a Clean Power Grid

16 Impact of Regional Fuel Mix for Hamilton 30,000 25,000 20,000 MTeCO2 2 15,000 10,000 5,000 0 SPNO Actual Hamilton NWPN MTeCO2 Assume Highest Carbon Assume Lowest Carbon 16

17 Natural Gas Conversions Could Have a Big Carbon Impact at Hamilton MTeCO Assuming a one-to-one btu swap Converting electric systems to natural gas could reduce carbon emissions significantly 0 1,000 MMBTU of Grid Electricity 1,000 MMBTU of Natural Gas

18 Other Greenhouse Gas (GHG) Contributors at Hamilton

19 Source 08 Units MTeCO 2 % Total Air Travel Students: 3,235,280 miles Faculty: 869,400 miles 3,189 13% 19

20 Study abroad and faculty research Air Travel Scope 3 Institutions Shown 2.0 GHG Emissions from Air Travel Babson College Bentley University / Campus Use er MTeCO A B C D F G H I J K L M N O P Q Clemson University Gallaudet University Hampshire College Le Moyne College Loyola Marymount University Pacific Lutheran University Rowan University Texas A&M University University of Arkansas University of Denver University of Notre Dame University of Portland Virginia Commonwealth University Gross Emissions Wesleyan University 20

21 Other Greenhouse Gas (GHG) Emissions Sources

22 Scope 3 Number of faculty/staff Days per year a faculty/staff t ff member commutes to campus Average miles a faculty/staff t ff member commutes per trip Number of ti trips/day per Total faculty/staff Mileage member Staff: 496 Staff: 250 Staff: 10.5 Staff: 2.56 Staff: 3,215,028 Faculty: 236 Faculty: 250 Faculty: 10.5 Faculty: Faculty: 1,407, Total Mileage Fuel Efficiency Total Faculty/Staff fuel consumption Staff: 3,215,028 Faculty: 1,407,019 Staff: mpg Faculty: mpg Staff: 145,476 Faculty: 63,666 Faculty/Staff Total Carbon Emissions 1,869 MTeCO 2 8% of 08 Total 22

23 Commuting emissions vs. database Residential campus reduces commuting miles MT TeCO 2 /Campus User Gross Emissions 23

24 Commuting emissions vs. database Residential campus reduces commuting miles 5 Compared with other residential colleges 4 MT TeCO 2 /Campus User Gross Emissions 24

25 Solid waste Scope 3 rt Tons Sho 1,100 1, FY2003 FY2004 FY2005 FY2006 FY2007 FY2008 Natural Gas and Oil Total Carbon Emissions: 829 MTeCO 2 10% reduction since FY2003-3% of 08 total 25

26 Fossil - Scope 1 100,000 90,000 80,000 70,000 Ga allons 60,000 50,000 Diesel 40,000 Gasoline 30,000 20,000 10,000 0 FY2003 FY2004 FY2005 FY2006 FY2007 FY2008 Vehicle Fleet Carbon Emissions: 810 MTeCO 2-3% of 08 total 26

27 Refrigerants Scope Po ounds HFC-134a HFC-404a HFCFC-22 0 FY2005 FY2006 FY2007 FY2008 Refrigerant Use: 69 MTeCO 2 - <1% of 08 total 27

28 Fertilizer application Scope 1 Source 08 Units MTeCO 2 % of Total Fertilizers 3,149 lbs. Nitrogen 12 <1% 28

29 3,193,120 kwh of green power purchased Offset Amount MTeCO 2 REC 3,193,120 1,329 29

30 Comparing Greenhouse Gas (GHG) Emissions Summary Benchmarks

31 Benchmark institutions Institutions Babson College Bentley University Bowdoin College Carleton College Grinnell College St. Lawrence University Wesleyan University Williams College Location Babson Park, MA Waltham, MA Brunswick, ME Northfield, MN Grinnell, IA Canton, NY New London, CT Williamstown, MA 31

32 GreenLine institutions nationwide GreenLine Institutions Babson College Bentley University Bowdoin College Carleton College Clemson University Davidson College Eckerd College Fitchburg State College Gallaudet University Grinnell College Hamilton College Hampshire College Lewis & Clark College Loyola College in Maryland Loyola Marymount University Oregon Institute of Technology Pacific Lutheran University Portland State University Rowan University GreenLine Institutions Santa Clara University Seattle University Southern Methodist University St. Lawrence University Texas A&M University University of Arkansas University of Denver University of Maryland College Park University of Notre Dame University of Oregon University of Portland University of Redlands University of San Diego University of Vermont Virginia Commonwealth University Washington and Lee University Wesleyan University Western Oregon University Williams College 32

33 Average Emissions per 1,000 GSF v. Peers Offsets put emissions well below peer average 33

34 Offsets Put Emissions Below Average

35 Nationwide Hamilton is Also Below Average

36 Emissions per student FTE is a Function of Density

37 Schools Like Hamilton are Less Dense than Others

38 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 give a more complete picture of the transportation element of the emissions study. 38