California took in $1B for climate projects. Many are disappointed.

By Anne C. Mulkern | 12/02/2024 06:16 AM EST

Analysts say the state could have taken in an additional $200 million if it had started to tighten rules for its carbon-trading program.

A section of California's high-speed rail line is shown during construction in 2017.

A section of California's high-speed rail line is shown during construction in 2017. California has paid for the project in part with money it's received selling credits through its carbon market. Rich Pedronocelli/AP

California took in $1 billion for climate programs through the latest auction in its carbon market program — an amount analysts said was low and reflects continuing program uncertainty.

California’s carbon market generates money for emissions-reducing projects by forcing polluters that exceed emissions limits to pay the state with carbon credits they buy at auctions held four times a year.

Results released Wednesday of the latest auction show the state received $31.91 for each credit it auctioned. Credits sold for $41.76 in a February auction, $37.02 in May and $30.24 in August.

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“That’s a pretty significant drop,” Katelyn Roedner Sutter, California state director of the Environmental Defense Fund, said of the price change since February. “There’s just less demand for allowances right now.”

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