The Legal and Practical Challenges of California's Advanced Clean Fleets Regulation
On June 27, 2025, the California Office of Administrative Law (OAL) approved the amended Low Carbon Fuel Standard (LCFS) Regulation, submitted by the California Air Resources Board (CARB) to the OAL on May 16, 2025....more
Appeal in POET II could complicate California Air Resources Board’s proposed LCFS amendments. In the case commonly referred to as POET II, petitioner POET, LLC, a biofuels manufacturer, challenged the Low Carbon Fuel...more
Recent guidance published by the California Air Resources Board (ARB) clarifies the treatment of diesel fuels under the Low Carbon Fuel Standard (LCFS) in light of the Court of Appeals’ May 30, 2017 decision in POET I....more
In two recent posts, we discussed how California’s Low Carbon Fuel Standard (LCFS) had been thrown into a state of potential upheaval by two interrelated legal challenges commonly known as POET I and POET II, including a...more
Big changes appear to be imminent for California’s Low Carbon Fuel Standard (LCFS). As discussed in greater detail in our recent post, the LCFS currently is the subject of two interrelated legal challenges commonly known...more
Two related cases, advancing in parallel, have the potential to upend California’s Low Carbon Fuel Standard (LCFS), whether via full suspension of the LCFS or carving out diesel fuels from the deficit and crediting regime. ...more
After a lengthy process of policy review and revision, the California Air Resources Board (ARB) re-adopted the state’s Low Carbon Fuel Standard (LCFS) on September 25, 2015. The LCFS is expected to contribute approximately...more