Overview

The California greenhouse gas (GHG) inventory compiles statewide anthropogenic GHG emissions and sinks. It includes estimates for carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), sulfur hexafluoride (SF6), hydrofluorocarbons (HFCs), and perfluorocarbons (PFCs). The current inventory covers years 2000 to 2006.

Data sources include California and federal agencies, international organizations, and industry associations. The calculation methodologies are consistent with IPCC guidance. The current inventory uses global warming potential (GWP) from the IPCC Second Assessment Report to be compatible with the national inventory. Full documentation of data sources and methods is available to the public on this web site.

Current Inventory

The current California GHG inventory covers the years 2000 to 2006.  GHG emissions for the years 1990 through 1999 are included in the archived 1990 through 2004 GHG inventory published in November 2007 (available in the archive section of this site).

The California GHG inventory has been classified in three ways:

1. Scoping Plan categories; follows the categories identified in the ARB’s Scoping Plan.
2. Process-oriented categories; follows the IPCC categorization to ensure comparability with international inventories, which are organized in a similar manner.
3. Economic sectors activity; allows for comparison with other ARB emission inventories, which are similarly categorized.

Select a subset of the inventory

Query the inventory by economic sector and/or by activity. This interactive query tool 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. More details on the query tool's help page.

Download the entire inventory

• 2000-2006 inventory by Scoping Plan category - Summary [PDF-29 KB]
• 2000-2006 inventory by IPCC category - Full Detail [PDF-147 KB]
• 2000-2006 inventory by IPCC category - Full Detail [Excel-393 KB]
• 2000-2006 inventory by IPCC category - Summary [PDF-43 KB]
• 2000-2006 inventory by economic sector - Full Detail [PDF-158 KB]
• 2000-2006 inventory by economic sector - Full Detail [Excel-293 KB]
• Land Use, Land Use Change, and Forestry - Net CO2 Flux [PDF-83 KB]