Aemetis gains CARB approval for six dairy RNG LCFS pathways
- CARB approved provisional Low Carbon Fuel Standard pathways for six Aemetis Biogas dairy digesters, effective October 1, 2026.
- The six approved pathways have an average carbon intensity of −351.
- Aemetis Biogas Central Digester Project includes 14 digesters supplied by waste from 17 dairies; biogas is conveyed 36 miles to a Keyes RNG facility interconnected to the PG&E pipeline.
- Aemetis had seven dairy pathways approved in June 2025; two additional digesters are expected to be eligible for approvals next year via the Tier 1 filing process.
CARB approvals
The California Air Resources Board approved provisional Low Carbon Fuel Standard pathways for six dairy digesters built and operated by Aemetis Biogas LLC; the approvals are effective October 1, 2026. The average carbon intensity reported for the six approved pathways is negative 351.
Operational scale
The Aemetis Biogas Central Digester Project near Modesto comprises 14 digesters fed by waste from 17 dairies. Biogas is transported via 36 miles of pipeline to a central renewable natural gas production facility in Keyes, California, which is interconnected to the PG&E utility pipeline.
Commercial impact
Management noted the six new approvals complement seven dairy pathways approved in June 2025 and materially increase LCFS credit generation from the Central Digester Project. Two additional digesters recently constructed are expected to be eligible for pathway approvals next year through the Tier 1 filing process. Company commentary states that, with projected reductions in excess banked LCFS credits, the current $90 market price for LCFS credits is expected to continue to increase.
Source: Aemetis, Inc.