California Air Resources Board (CARB)

Money Moves

Must approve or deny SFMTA's exemption request

San Francisco's transit agency voted to postpone buying 378 battery-electric buses, opting for cheaper diesel-hybrid models to save $452 million. The swap needs approval from the California Air Resources Board (CARB), which mandates the electric purchase.

Updated Sep 15

Rule Changes

Rulemaking authority; adopted the amended regulation in May 2026

California's largest polluters began operating under a sharply tighter carbon cap on September 1. The amended Cap-and-Invest Program, previously called Cap-and-Trade, removes 118 million pollution allowances through 2030, shrinking the cap 11% each year this decade.

Updated Sep 2