Presentation on theme: "Lincoln Community Greenhouse Gas Emission Inventory Calendar Year 2008 Prepared by: Lincoln-Lancaster County Health Department Presented by: Doug Tangeman,"— Presentation transcript:
Lincoln Community Greenhouse Gas Emission Inventory Calendar Year 2008 Prepared by: Lincoln-Lancaster County Health Department Presented by: Doug Tangeman, EEI
Overview Background and Methods Emissions Breakdown Key Results Community Comparisons Future Improvements
Inventory Benefits Establishes a baseline (where are we now?) – Where are emissions actually generated? – What areas can we most effectively improve upon? – How do we compare to other cities/regions? Increasing regulation – GHG emissions reporting now required by EPA for many regulated sources – GHG inventories already mandated in some states
Background and Methods Abbreviations – GHG = Greenhouse Gas – CO 2 e = Carbon Dioxide Equivalent. A particular gases global warming potential over 100 years relative to carbon dioxide – Carbon Dioxide (CO 2 ) = 1 – Methane (CH 4 ) = 21 – Nitrous Oxide (N 2 O) = 310 – Sulfur Hexafluoride (SF 6 ) = 23,900 – eGRID = Emissions & Generated Resource Integrated Database – CFC/PFC = Chlorofluorocarbon/Perfluorocarbon – CACP Software = Clean Air and Climate Protection Software – ICLEI = International Council for Local Environmental Initiatives
Background and Methods Lincoln Community defined as the city limits – When no city wide data was available, used ratio of Lincoln population to total population for which data was available Emissions from purchased electricity determined using EPAs eGRID model Inventoried CO 2, CH 4, N 2 O, and SF 6 emissions Does not include emissions from CFCs or PFCs Made best effort to use fuel consumption data Emissions assigned to one of five sectors (groups) Emissions calculated and totaled using CACP v b
Sources of Data Utilities – Lincoln Electric System – Black Hills Energy – Lincoln Water/Wastewater Industry – Regulated air pollution sources – Emergency/Non- emergency generators Transportation – VMT estimates from planning – Nebraska DMV – BNSF & UPRR – Private aviation Other – Landfills – Energy Information Administration
Where are we now? Lincoln ,775,088 Metric Tons (tonnes) CO 2 e *2008 U.S. Total = 7,052,600,000 Metric Tons CO 2 e (U.S. Energy Information Administration Estimate)
Where are Emissions Generated?
Where are emissions generated?
Residential Commercial Industrial Tonnes CO 2 e
Transportation Includes: – On road vehicles – Locomotives – Private Aviation Tonnes CO 2 e
What areas can we improve upon? Over 2.8 million tonnes of CO 2 e are from electricity and natural gas used to light, heat, and cool homes and businesses Another 700,000 tonnes are generated from personal vehicle use These combine to account for nearly 75% of all GHG emissions
What areas can we improve upon? Significantly reducing emissions means efforts must be made across ALL sectors Reductions in home and office heating/cooling use Changes in driving habits
How do we compare? 1.Population from U.S Census Bureau July 1 st, 2008 estimate 2.United States emission estimate from Energy Information Administration 2008 U.S. Greenhouse Gas Emission Inventory Report