Transportation Energy
Data, Facts, and Statistics

See California Retail Gasoline and Diesel Prices per Gallon.

Transportation accounts for a major portion of California's energy budget and has a significant impact on air quality. It is also the single largest source of the state's greenhouse gas emissions. Since 1975, the California Energy Commission has promoted a secure, affordable, reliable, and environmentally sound transportation energy infrastructure by ensuring that the supply, production, distribution, and price of petroleum fuels and other blending components are available to meet demand; and viable alternative, low-carbon, and renewable fuel options exist, and private sector interest is leveraged to build and expand refinery capacity and infrastructure to accommodate greater imports, distribution, and fuel supply storage. The links below provide historical transportation fuels statistics. The Fuels and Transportation section provides current data and information on the programs and projects administered at the Energy Commission.

General Info


Diesel/Biodiesel Fuel

Ethanol / E85


Vehicle Data