California's Air Resources Board took one of its first steps toward a potential statewide ban on sales of new gas-powered space and water heaters for buildings.

The California Air Resources Board approved groundbreaking rules requiring passenger, freight and switcher locomotives to decarbonize in the next three decades.

California regulators approved a rule that will ban the sale of diesel trucks in the state starting in 2036, requiring all new trucks sold to be zero-emission.

The California Air Resources Board plans to vote on a regulation requiring new switcher locomotives to be zero-emitting by 2030 and freight locomotives by 2035.

More than 1.5 million light-duty electric vehicles have been sold in California, beating by two years the target set by a governor’s executive order in 2012.

A court ruling voiding Berkeley's ban on natural gas in new buildings could have national impact, but it doesn’t prevent all efforts to electrify buildings.

The EPA approved a waiver for California’s Advanced Clean Trucks regulation, clearing the way for the state to launch the zero-emission program.

Good news is reportedly on the way to the California Air Resources Board regarding federal approval for its Advanced Clean Trucks regulation.

The Western EIM tariff changes allow generators to include the costs of GHG compliance associated with Washington’s cap-and-trade program in their energy bids.

As it moves to adopt a rule requiring truck fleets to transition to ZEVs, CARB considers situations where supporting infrastructure is unavailable.