Aemetis makes progress on California dairy RNG project

Aemetis has completed the construction of the first two dairy digesters and a four-mile pipeline for the production of renewable natural gas (RNG).

The advanced renewable fuel and biochemicals firm will supply below-zero carbon intensity RNG to displace petroleum-based natural gas used at the Keyes ethanol production facility, and to provide fuel for RNG trucks and buses.

Eric McAfee, chairman and CEO of Aemetis, said: “Aemetis is implementing multiple system upgrades and expansion projects related to our 65 million gallon-per-year renewable fuel and high-grade alcohol plant, all of which produce carbon intensity and input costs while increasing revenues.”

“Our Aemetis Biogas team is now rapidly building systems to capture and convert methane from dairy lagoons into negative carbon intensity RNG transportation fuel.”

According to McAfee, after capturing and processing the biogas from anaerobic digesters, the firm will pipeline the upgraded gas to its plant in Keyes, California, where it will be used as energy to produce transport fuel and high-grade alcohol.

“In the first half of 2021, we will inject the RNG into the common carrier pipeline and dispense RNG fuel to truck fleets at our on-site CNG loading station.”

Aemetis is currently commissioning phase one of the Central Dairy Digester Project. Once this is complete, construction will begin on a further 15 dairies that have signed agreements with Aemetis and around 30 miles of private pipeline.

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