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Inventory GHG Emissions
The very first step to developing a climate action plan includes conducting a baseline inventory of greenhouse gas (GHG) emissions. A complete inventory is a measurement of total GHG emissions directly and indirectly contributed by municipal operations and the community as a whole.
- Stationary Combustion of fuel in fixed locations such as burning natural gas to heat buildings;
- Mobile Combustion of fuel from transportation sources such as using gasoline for waste-hauling fleet vehicles and off-road equipment;
- Process Emissions from physical or chemical processing such as methane and nitrous oxide from wastewater treatment facilities;
- Fugitive Emissions that are not physically controlled such as methane from landfills; and
- Indirect Emissions from electricity usage.
Municipal Operations GHG Inventory
Cities and counties are encouraged to use the Local Government Operations Protocol (LGOP) standards to conduct a baseline GHG emissions inventory for municipal operations. The LGOP provides “program neutral” guidance for use by any local government engaging in a GHG inventory exercise. The reporting protocol includes a standardized set of guidelines, methodologies and calculations for local governments to estimate and report GHG emission inventories from municipal operations.
Community GHG Inventory
The Statewide Energy Efficiency Collaborative (SEEC) offers a Community GHG Inventory Tool to assist local government staff to conduct a community-wide GHG emissions inventory. The SEEC alliance currently offers this tool at no cost to California cities and counties.
A detailed description of climate calculators available to assist cities and counties with completing their GHG emissions inventory.
Visit the ARB website to download the protocol to inventory GHG emissions from government operations.
The California Sustainability Alliance provides a summary of the process to develop a municipal operations inventory using the LGOP.
SEEC offers tools and guidebooks to conduct a municipal operations and community-scale GHG emission inventory.
An international protocol that provides information on how to conduct a municipal operations and community-wide inventory.
A white paper developed by the Association of Environmental Professionals (AEP) that offers recommendations to prepare a community-wide GHG emissions inventory specific to California and CEQA.
A greenhouse gas (GHG) plan level guidance document by the Bay Area Air Quality Management District to assist local governments in their climate action planning efforts.
Available at Cost
ICLEI offers inventory software to calculate GHG emissions and criteria pollutants from government operations and communities.
The Climate Registry offers online reporting of GHG emissions inventories through The Climate Registry Information System (CRIS). Cities and counties can use CRIS to report their GHG emission inventories, which is 3rd-party certified and available for public review.