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Low Carbon Fuel Standard

This page last reviewed October 1, 2019

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This page provides information regarding ARB's Low Carbon Fuel Standard (LCFS) Program pursuant to the California Assembly Bill AB 32 pdf and the Governor's Executive Order S-01-07 pdf

Watch: Low Carbon Fuel Standard Video

Program Implementation Activities:

Background, Meetings, Guidance Documents, Reporting Tool & Other Information

General Information, Public Meetings & Workgroups

LCFS Data Management System for Registration and Reporting

Public Comments, Peer Review, and Contact List

Information About...

Background Information

Under the AB 32 Scoping Plan, the Board identified the Low Carbon Fuel Standard (LCFS) as one of the nine discrete early action measures to reduce California's greenhouse gas emissions that cause climate change. The LCFS is a key part of a comprehensive set of programs in California to cut greenhouse gas (GHG) emission and other smog-forming and toxic air pollutants by improving vehicle technology, reducing fuel consumption, and increasing transportation mobility options. The LCFS is designed to decrease the carbon intensity of California's transportation fuel pool and provide an increasing range of low-carbon and renewable alternatives, which reduce petroleum dependency and achieve air quality benefits.

The Board approved the LCFS regulation in 2009 and began implementation on January 1, 2011. CARB approved some amendments to the LCFS in December 2011, which were implemented on January 1, 2013. In September 2015, the Board approved the re-adoption of the LCFS, which became effective on January 1, 2016, to address procedural deficiencies in the way the original regulation was adopted. In 2018, the Board approved amendments to the regulation, which included strengthening and smoothing the carbon intensity benchmarks through 2030 in-line with California’s 2030 GHG emissions reduction target enacted through SB 32, adding new crediting opportunities to promote zero emission vehicle adoption, alternative jet fuel, carbon capture and sequestration, and advanced technologies to achieve deep decarbonization in the transportation sector.

Other jurisdictions are joining California, which is evident in the Pacific Coast Collaborative, a regional agreement between California, Oregon, Washington, and British Columbia, to strategically align policies to reduce greenhouse gases and promote clean energy. CARB has been routinely working with these jurisdictions, and over time, these LCFS programs will build an integrated West Coast market for low-carbon fuels that will create greater market pull, increased confidence for investors of low carbon alternative fuels, and synergistic implementation and enforcement programs. CARB also continues to engage with representatives from Canada and Brazil as they develop similar clean fuels programs.

What is LCFS?

The Low Carbon Fuel Standard is designed to encourage the use of cleaner low-carbon fuels in California, encourage the production of those fuels, and therefore, reduce greenhouse gas emissions. The LCFS standards are expressed in terms of the "carbon intensity" (CI) of gasoline and diesel fuel and their respective substitutes. The program is based on the principle that each fuel has "life cycle" greenhouse gas emissions that include CO2, CH4, N2O, and other greenhouse gas contributors. This life cycle assessment examines the greenhouse gas emissions associated with the production, transportation, and use of a given fuel. The life cycle assessment includes direct emissions associated with producing, transporting, and using the fuels, as well as significant indirect effects on greenhouse gas emissions, such as changes in land use for some biofuels. The carbon intensity scores assessed for each fuel are compared to a declining CI benchmark for each year. Low carbon fuels below the benchmark generate credits, while fuels above the CI benchmark generate deficits. Credits and deficits are denominated in metric tons of GHG emissions. Providers of transportation fuels must demonstrate that the mix of fuels they supply for use in California meets the LCFS carbon intensity standards, or benchmarks, for each annual compliance period. A deficit generator meets its compliance obligation by ensuring that the amount of credits it earns or otherwise acquires from another party is equal to, or greater than, the deficits it has incurred.

What's New?

  • July 18, 2019: Public Workshop to discuss potential amendments to the cost containment features of the LCFS scheduled on July 31, 2019. For more information...