What's New

Query California's GHG Inventory by economic sector and/or by activity with the newly released interactive query tool that allows you to select a subset of the inventory in a table, view it or download it to your computer, find out how each of the emissions values was estimated, and plot the data.

Overview

The Greenhouse Gas (GHG) Inventory provides estimates of the amount of GHGs emitted to and removed from the atmosphere by human activities within California. The Air Resources Board is responsible for maintaining and updating California's GHG Inventory per AB 1803.

The inventory includes estimates for carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), sulfur hexafluoride (SF6), hydrofluorocarbons (HFCs), and perfluorocarbons (PFCs), which are often referred to as the "six Kyoto gases". The current GHG inventory covers years 1990 to 2004. The emissions estimates are statewide estimates that rely primarily on state, regional or national data sources, rather than individual facility-specific emissions. Updates will be linked to the inventory data page as estimates are refined to include additional years and more geographically-specific data.

The State's emission reduction program under the Global Warming Solutions Act of 2006 (AB 32) relies on the GHG inventory estimates. The inventory provided the basis for developing the 1990 statewide emissions level and 2020 emissions limit required by AB 32.

The GHG inventory also serves as a baseline for projecting 2020 business-as-usual emissions. The difference between the 2020 emissions limit and the 2020 business-as-usual estimate is the amount of emission reductions that must be achieved by the State through the Scoping Plan.

Highlights

• 1990 Emissions Level & 2020 Limit
• Inventory Data
• Inventory Documentation
• Inventory Graphs