California does not plan to adopt highly anticipated changes to its Low Carbon Fuel Standard (LCFS) before early 2024 but could still impose lower-carbon transportation fuel requirements next year, the agency said today.
California Air Resources Board (CARB) staff said they did not plan to publish details of potential changes to the program until after a late September board meeting. A required 45-day review period would follow, with plans for board consideration and approval in 2024, staff said in a workshop focused on a California fuel market model influenced by the program.
The new timeline leaves open the potential for but makes no commitments to increase credit demand for the 2024 compliance year. CARB could impose tougher transportation fuel carbon intensity targets in mid- or late 2024, following board approval, or wait for the full 2025 compliance year, the agency's transportation fuels branch chief Cheryl Laskowski said. CARB would not retroactively change the program to include any portion of a compliance year before the changes took effect, she added.
"We have some options there, but we don't go back in time, necessarily, for policy items," Laskowski said.
CARB confirmed the proposal schedule was changing late last week and on Monday said the timeline had moved back a month.
Fuel suppliers have watched this rulemaking process closely as unused credits climbed to a record 16.5mn t by the end of the first quarter and staff took comment on whether to reduce the credit-generating abilities of sources including renewable natural gas, crop-based biofuels and electric forklift charging.
LCFS programs require yearly reductions in transportation fuel carbon intensity. Higher-carbon fuels that exceed the annual limit incur deficits that suppliers must offset with credits generated from the distribution of approved, lower-carbon alternatives.
California targeted a 20pc reduction in fuel carbon intensity by 2030. CARB has for more than a year explored tougher targets, as well as revising which fuels may generate credits and deficits and other changes through similar workshops. The agency has not yet formally proposed any changes for review and board consideration, though staff have restated an implementation target of 2024 as recently as late July.
Credits available for compliance have climbed to record highs as those discussions continued. More than 16.5mn t were available at the end of the first quarter — enough to offset 78pc of all the new deficits generated in 2022. LCFS credits do not expire.
CARB expects to discuss but not vote on the future of LCFS at a joint board meeting with its environmental justice advisory council (EJAC) in mid-September and a scheduled board meeting at the end of the month. The agency would not publish details on the proposal before the late-September meeting, staff said.
The board's EJAC this summer has hosted presentations critical of the use of dairy-derived renewable natural gas and crop-based biofuels — sources that generated roughly a third of all credits in the first quarter of 2023, the most recent period with published data.

