NASHVILLE, Tenn. (RFD News) — California dairy methane incentives remain active, but amended fuel rules are beginning a long transition that could change digester economics. California Air Resources Board regulations effective since July 2025 tightened the Low Carbon Fuel Standard while preserving support for existing manure-gas projects.
Digesters capture methane from manure lagoons and convert it into renewable natural gas, electricity, or hydrogen. Projects can earn state fuel credits, federal renewable-fuel credits, grants, and utility support that often determine whether construction is financially viable.
The state is still encouraging investment. California announced $34 million in June for Dairy Plus projects targeting methane, water quality, nitrogen, and salt management, showing manure systems remain part of its agricultural strategy.
However, future projects face higher equipment, pipeline, financing, and verification costs. The amended program also signals that exceptionally favorable avoided-methane treatment will not continue indefinitely, increasing uncertainty for lenders and dairy operators.
Large dairies and clustered projects may remain best positioned because they can spread costs across more cows and shared infrastructure. Smaller farms may depend increasingly on grants, partnerships, and alternative manure practices.
