Note: The carbon intensity of energy supply (CO2/BTU) reflects the energy fuel mix within a state.
Data Source: U.S. Energy Information Administration, U.S. Department of Energy.
Analysis by CEC Economics
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- In 2023, California's carbon intensity of the energy supply (50.3 kg CO2 per million BTU) was slightly lower than that of the U.S. (51.1 kg CO2 per million BTU). Among the 50 states, California’s energy supply had a medium level of carbon intensity in which 22 states had lower carbon intensities than California. Compared to 2022, California's carbon intensity dropped 2.9%, while that of the U.S. decreased by 1.7%. The year-over-year drop in 2023 has been a significant improvement relatively to 2022 (-1.0% from 2021). Just ten states had a greater year-over-year percentage decrease than California.
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