GHG Emission Inventory Graphs

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The California greenhouse gas (GHG) Inventory compiles statewide anthropogenic GHG emissions. The graphs below provide a summary of emissions data for 2021 or for the time series of 2000-2021. All GHG inventory data is available on the current inventory page.

2021 GHG Emissions by Main Economic Sector

A pie chart showing 2021 GHG Emissions by Economic Sector. The chart shows the relative size of 2021 emissions by sector using the Economic Sector/Activity Categorization scheme. Transportation is the largest sector, followed by industrial, electricity generation, agriculture and forestry (combined), residential, and commercial. Electricity generation is divided between in-state and imports, with most emissions coming from in-state. For more information on data displayed, contact ghginventory@arb.ca.gov.

2021 GHG Emissions by Scoping Plan Category

A pie chart showing 2021 GHG Emissions by Scoping Plan Category. The chart shows the relative size of 2021 emissions, organized by the categories in the AB 32 Scoping Plan. Transportation is the largest sector, followed by industrial, electric power, commercial and residential (combined), agriculture, high GWP, and recycling and waste (combined). For more information on data displayed, contact ghginventory@arb.ca.gov.

2021 GHG Emission by Scoping Plan Sub-Category

A multi-level pie chart showing 2021 GHG emissions by Scoping Plan category and sub-sector. The inner ring shows the Scoping Plan sectors, while the outer shows the sub-sectors. In descending order, from largest to smallest source of emissions, the sectors are: Transportation, Industrial, Electricity, Residential & Commercial, Agriculture, High GWP, and finally Waste. Transportation is composed of the following sub-sectors, from largest to smallest contributor: Passenger Vehicles, Heavy-Duty Vehicles, Ships, Aviation, Rail, and Unspecified. Industrial is composed of sub-sectors: Refineries, General Fuel Use, Oil & Gas, Cement, Thermal Cogen, Pipelines, and Other. Electricity is composed of sub-sectors: In-State Generation, Specified Imports, and Unspecified Imports. Residential & Commercial is composed of Residential and Commercial sub-sectors. Agriculture is composed of sub-sectors: Livestock, Crops, and General Fuel Use. High GWP is composed of sub-sectors: Refrigerants and Other. Waste has no sub-sectors. For more information on data displayed, contact ghginventory@arb.ca.gov.

Change in California GDP, Population and GHG Emissions Since 2000

A line graph showing the percentage change in California’s GDP, Population, GHG Emissions, GHG Emissions per Capita, and GHG Emissions per unit GDP in 2001 to 2021 relative to 2000. California’s GDP and population have increased almost every year since 2000. Since 2007, the GHG Emissions, GHG Emissions per Capita, and GHG Emissions per unit GDP have steadily decreased. For more information on data displayed, contact ghginventory@arb.ca.gov.

2000–2021 GHG Emissions by Category as Defined in the Scoping Plan

A line graph showing emissions trends by Scoping Plan sector from 2000 to 2021. Sectors are represented by the following lines: Transportation, Electric Power, Industrial, Commercial & Residential, Agriculture, High GWP, and Recycling & Waste. The transportation sector is the largest source of GHG emissions in the state in all years. The industrial sector is the next largest sector in 2021, followed by electric power, Commercial & Residential, Agriculture, High GWP, and finally Recycling & Waste, in descending order. Emissions from most sectors have decreased or stayed about the same over time. For more information on data displayed, contact ghginventory@arb.ca.gov.