Aemetis Biogas completes 7 miles of California pipeline

Aemetis Biogas has completed an additional seven miles of underground pipeline to transport biogas from five new dairy digesters.

The pipeline will transport the biogas to the centralised RNG upgrading facility at the Aemetis Keyes biofuels plant. Including the four miles of pipeline commissioned in late 2020, Aemetis has now installed more than 11 miles of pipeline and is on track to complete the full 36 miles this year.

Construction crews are working on an additional 25 miles of pipeline spanning Stanislaus and Merced Counties to transport biogas for Phases 2 and 3 of the project.

The Aemetis biogas pipeline project, 52 dairy digesters, central biogas upgrading, and PG&E gas pipeline interconnect facilities will bring approximately $300 million (€268 million) of new capital investment to California’s Central Valley, also bringing new jobs to agricultural communities.

“With five dairy biogas digesters under construction and biogas production scheduled to begin by mid-year, the completion of this phase of pipeline on time and under budget is another significant milestone for the Aemetis biogas dairy RNG project,” said Andy Foster, president of Aemetis Biogas.

“By year’s end, we expect to have built 15 new dairy digesters and completed the 36-mile biogas pipeline network, providing immediate benefits to the region’s air quality and the state’s low-carbon transportation fuel supply.”

In support of California’s climate change initiatives, Aemetis plans to increase RNG production to more than 1.4 million MMBtu per year of negative carbon intensity transport fuel, sourced from 52 digesters in the state’s San Joaquin Valley – a region cited by the US Environmental Protection Agency as having some of the nation’s worst air quality.

Once complete, the project is designed to reduce greenhouse gas emissions by an estimated 5.2 million tonnes of CO2 annually, equivalent to removing the emissions from 1.1 million cars from California’s roads each year.

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