GHG Inventory Graphs

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The California Assembly Bill 32 Greenhouse Gas (GHG) Emissions Inventory (Inventory) compiles statewide anthropogenic GHG emissions. The graphs below summarize emissions data from the 2026 edition Inventory (years 2000-2024). All Inventory data is available on the Current Data page.

2024 GHG Emissions by Main Economic Sector

A pie chart showing 2024 GHG Emissions by Economic Sector. The chart shows the relative size of 2024 emissions by sector using the Economic Sector/Activity Categorization scheme. Transportation is the largest sector (38.0%), followed by industrial (22.0%), electricity generation (in state, 10.8%, imports 5.0%), agriculture (8.2%), residential (9.2%), and commercial (6.8%). 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.

2024 GHG Emissions by Scoping Plan Category

A pie chart showing 2024 GHG Emissions by Scoping Plan sector. The chart shows the relative size of 2024 emissions, organized by the categories in the AB 32 Scoping Plan. Transportation is the largest sector (37.0%), followed by industrial (18.7%), electric power (15.9%), commercial and residential (combined, 11.5%), agriculture (8.2%), high GWP (6.2%), and recycling and waste (combined, 2.4%). For more information on data displayed, contact ghginventory@arb.ca.gov.

2024 GHG Emission by Scoping Plan Sub-Category

A multi-level pie chart showing 2024 GHG emissions by Scoping Plan sector 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 (37.0%), Industrial (18.7%), Electricity (15.9%), Commercial and Residential (combined, 11.5%), Agriculture (8.2%), High GWP (6.2%), and finally Waste (2.4%). Transportation is composed of the following sub-sectors, from largest to smallest contributor: Passenger Vehicles (29.0%), Heavy-Duty Vehicles (5.5%), Aviation (1.2%), Ships (1.1%), and Other (0.3%). Industrial is composed of sub-sectors: Refineries (7.1%), Other Fuel Use (3.8%), Oil and Gas (combined, 2.2%), Cement (1.9%), Thermal Cogen (1.5%), Pipelines (1.2%), and Other (1.0%). Electricity is composed of sub-sectors: In-State Generation (10.8%), Unspecified Imports (2.6%), and Specified Imports (2.5%). Commercial and Residential is composed of Residential (7.3%) and Commercial (4.3%) sub-sectors. Agriculture is composed of sub-sectors: Livestock (5.9%), Crops (2.0%), and Ag Fuel Use (0.3%). High GWP is composed of sub-sectors: Refrigerants (5.6%) and Other (0.6%). Waste has no sub-sectors. For more information on data displayed, contact ghginventory@arb.ca.gov.

Change in California Gross State Product and GHG Emissions Since 2000

A line graph showing the percentage change in California’s GSP, GHG Emissions, and GHG Emissions per unit GSP in 2001 to 2024 relative to 2000. California’s GSP has increased almost every year since 2000. Since 2007, GHG Emissions and GHG Emissions per unit GSP have steadily decreased. For more information on data displayed, contact ghginventory@arb.ca.gov.

2000–2024 GHG Emissions by Category as Defined in the Scoping Plan

A line graph showing emissions trends by Scoping Plan sector from 2000 to 2024. Sectors are represented by the following lines: Transportation, Electric Power, Industrial, Commercial and Residential (combined), Agriculture, High GWP, and Recycling and Waste (combined). 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 2024, followed by electric power, Commercial and Residential, Agriculture, High GWP, and finally Recycling and 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.