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Tasks Define a consistent methodology for collecting/analyzing 2012 GHG inventory data – ICLEI Community Protocol – Use same methodology to back-cast 2005 inventory Calculate the region’s 2005 and 2012 emissions using the ICLEI ClearPath tool – Replaces ICLEI beta spreadsheet tool Break out 2005 and 2012 inventories by locality Upload regional GHG inventory to the international Carbon Disclosure Project (CDP) reporting platform 3WRTC 10/29/15
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National Capital Region Greenhouse Gas Emissions
Inventory Update
Presented by Madison Wagner
WRTCOctober 29, 2015
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Background
• Current inventory measures status of 2012 goal • Desired outcome: 10% below business-as-usual levels by 2012• Goal: to create a standardized regional approach to tracking GHG
emissions • Continues NVRC work• Updates COG 2008 Climate Change Report
http://www.mwcog.org/uploads/pub-documents/zldXXg20081203113034.pdf
National Capital Region Climate Change Report 2008
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Tasks• Define a consistent methodology for
collecting/analyzing 2012 GHG inventory data– ICLEI Community Protocol– Use same methodology to back-cast 2005 inventory
• Calculate the region’s 2005 and 2012 emissions using the ICLEI ClearPath tool– Replaces ICLEI beta spreadsheet tool
• Break out 2005 and 2012 inventories by locality
• Upload regional GHG inventory to the international Carbon Disclosure Project (CDP) reporting platform
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Methodology• Data collected and analyzed by COG staff– Regional WW/DW demographic data (Round 8.3
projections)– WWTP nitrogen load and concentration data
• Data collected from regional DW/WW treatment and pumping facilities
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Regional DataIndicator 2005 2012 Percent Change
Population 4,738,900 5,261,974 +9.9%
Households 1,879,016 2,010,575 +6.5%
Employment 2,693,401 2,789,269 +3.4%
Electricity Use 58,924,515,193 kWh
60,175,521,843 kWh
+2.1%
Stationary Fuel Use 471,798,890 gallons
319,917,118 gallons
-32.2%
Natural Gas Use 1,589,317,362 therms
1,453,056,576 therms
-8.6%
Annual VMT 41,833,286,780 miles
43,945,174,893 miles
+4.8%
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ResultsNational Capital Region Greenhouse Gas Emissions
(metric tons CO2 equivalent)
2005 2012 Percent Change
NCR MT CO2e 69,171,422 68,857,146 -0.5%
NCR Population 4,738,900 5,261,974 +9.9%
NCR MT CO2e per Capita 14.60 13.09 -10.3%
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Water-Related Emissions• Emissions associated with DW/WW
treatment and pumping are included in overall electricity and natural gas emissions– Uncertainty in sector breakdown
• Nitrogen and methane emissions from WWTPs– Calculated separately– Includes industrial and domestic
wastewater emissions
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Off-Road Combustion3.1%
Mobile Transporta-
tion32.0%
Commercial Airline4.2%
Electricity38.2%
RCI Fuel18.5%
Solid Waste Treatment1.2%
Wastewater Treatment0.1%
HFCs2.8%
NCR Greenhouse Gas Emissions 2005 by Activity - MT CO2e
Off-Road Combustion3.5%
Mobile Trans-
portation33.5%
Commercial Airline3.9%
Electricity39.6%
RCI Fuel14.5%
Solid Waste Treatment1.2%
Wastewater Treatment0.1%
HFCs3.7%
NCR Greenhouse Gas Emissions 2012 by Activity - MTCO2e
Emissions by Activity[Ref. detailed Inventory Table]
2005: 69,171,422 MT CO2e 2012: 68,857,146 MT CO2e
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Electricity
NCR Electricity Use (in kWh)
Source 2005 2012 Percent Change
Residential Electricity 19,734,181,996 20,083,333,241 +1.7%
Commercial Electricity 34,724,253,637 33,677,438,426 -3.1%
Industrial Electricity 4,466,079,560 6,414,750,176 +30.4%
Total 58,924,515,193 60,175,521,843 +2.1%
Residential33%
Commercial56%
Industrial11%
NCR 2012 Electricity Use by Sector
WW & DW % of gross electrical use not defined yet; Part of Comm. or Industrial? – TBD
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Findings• The National Capital Region
met its first target
• Electricity generation factors and stationary fuel combustion switches were the primary contributors to the region’s meeting the 2012 target
• Passenger vehicles and commercial electricity will be important reduction targets for future
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Next Steps• Determine electricity use in DW/WW sector
– Break out from general electricity use– Request data from local utilities to determine commercial vs. industrial classification– Consider calculating DW/WW sector emissions from national figures
• Identify additional opportunities for efficiency improvements, renewable energy production– ex. DC Water’s Digester; combined heat & power; green buildings; green fleets – Nitrogen-removal emissions tradeoff– Determine if/what sort of stormwater efficiencies might be quantifiable
• Identify opportunities to address conservation vs. cost recovery concerns– MSWG strategies[Ref. A. Campbell’s presentation & requestfor WRTC input on Water Sector items]
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Madison WagnerClimate and Energy Intern
Department of Environmental [email protected]