The Basics of Greenhouse Gas Emissions Inventories Mary Sotos World Resources Institute VEPGA Annual Meeting April 23, 2010
Why GHG Inventories? - Climate impact - Demonstrate leadership - Gain expertise for policy-making - Prepare for the future
Why WRI? - Internationally-accepted standards - Mission is to provide standards, tools, resources - Partnerships with other programs - New Public Sector Protocol
Definition Quantified amount of gases released as part of your operations as an organization for a specific time period –Six Kyoto gases: CO2, CH4, N2O, PFC, HFC, SF6 –Direct and Indirect Largely extension of energy use –Define your entity –Categorize emissions
Collect Data Calculate emissions Develop Assign resources Design GHG inventory Plan Set Target Reduce Emissions Manage Report Results
Organizational Inventories Company/ Agency/Department Geographic Inventories Nation/ State/County/City -Top-Down - Broad policies - Aligns with point-source regulation - Bottom-up - Apply “consolidation approach” - Indirect emissions
Financial Control - Balance sheet? - Set financial policies? Operational Control - Operating license? - Set operating policies? Organizational Boundaries
Categorize emissions DIRECT –Scope 1: Fuel combustion, process emissions, fugitive emissions (HVAC) INDIRECT –Scope 2: Purchased electricity, heat/steam/cooling –Scope 3: All other indirect emissions upstream/ downstream
Data Sources Scope 1: Fuel records, purchase invoices, vehicle mileage Scope 2: Utility bills Scope 3: Employee commuting & business travel miles Industry association information Procurement
User supplied dataGHG emissions (tonnes) Sourc e IDSector Fuel type (e.g., solid fossil)Fuel Amou nt of fuel Units (e.g., kg or kWh) Heating value basisCO 2 CH 4 N2ON2O All GHGs (tonnes CO 2 e) -Cross-Sector and Sector-Specific -Emission factors by country or region (or user-supplied) - Free to download WRI’s Calculation Tools
EPA Climate Leaders Guidance CCAR Reporting Protocol WBCSD/WRI GHG Protocol The Climate Registry Protocol Public Sector Standard ISO Standards Other Programs
Collect Data Calculate emissions Develop Assign resources Design GHG inventory Plan Set Target Reduce Emissions Manage Report Results
Resources and Contacts Corporate Standard and Public Sector Protocol Calculation Tools toolshttp:// tools Mary Sotos,
What Gets Measured Gets Managed