A greenhouse gas (GHG) inventory is designed to measure and track emissions of carbon dioxide (CO2) and other high global warming potential (GWP) gases such as methane (CH4) and nitrogen dioxide (N2O), which are emitted from a local government’s buildings, vehicles and operations. A GHG inventory can be a useful resource for a local government for a number of reasons including:
- Risk management
- Addressing inefficiencies
- Readiness for a carbon constrained future
- Recognition as an environmental leader
- Stakeholder education
A GHG inventory is the foundation for developing a local government GHG management strategy and is the benchmark by which reduction benefits from policies and programs are tracked.
The Local Government Operations Protocol (LGOP) is a tool for accounting and reporting GHG emissions across a local government’s operations. It was adopted by the California Air Resources Board (ARB) in September 2008 for local governments to develop and report consistent and accurate GHG inventories and help meet California’s AB 32 GHG reduction obligations. The LGOP was developed in partnership with California Climate Action Registry, The Climate Registry, ICLEI and dozens of stakeholders, and draws from the best practices of previous protocols from these groups and others.
This tool was created to break down the complexities of the LGOP manual and provide an area by area summary of the recommended inventory protocols. For more detailed information about a specific area or inventory methodology, refer to the full protocol at http://www.arb.ca.gov/cc/protocols/localgov/pubs/lgo_protocol_v1_1_2010-05-03.pdf.