Ethanol Producer Magazine – The latest news and data on ethanol production


By Aemetis Inc. | September 08, 2021

Aemetis Inc., a renewable natural gas (RNG) and renewable fuels company focused on carbon-negative products, announced today that it has obtained building permits from Stanislaus County in California to build the next phase of dairy biogas digesters in the Aemetis Biogas Central Diary Digester project which will be connected by a private pipeline to the Aemetis ethanol plant near Modesto.

In addition to the California Environmental Quality Act (CEQA) IS / MND permit for the 32-mile extension of the Aemetis Biogas pipeline, the project has received building permits to begin construction of the next phase of dairy biogas digesters. “said Andy Foster. , President of Aemetis Biogas subsidiary of Aemetis, Inc. “We have already built and currently operate two dairy biogas digesters, dairy gas upgrading and pressurization facilities, and a four mile biogas pipeline connected to our plant. of Keyes ethanol. The centralized biogas cleaning and utility pipeline interconnect facilities at the Keyes plant are currently under construction for completion in the fourth quarter of 2021, and we expect to complete construction of 15 additional dairy biogas digesters. during 2022. “

The next phase of five dairy biogas digesters is part of a network of lagoon digesters being built by Aemetis Biogas to produce renewable natural gas (RNG) for use as a transport fuel. The RNG produced by the first two dairy digesters was approved by the California Air Resources Board using 426 (-426) negative carbon intensity biogas to replace the petroleum-based natural gas used in the production facility. ethanol from Keyes.

The next phase of five dairy digesters is expected to be completed in the first quarter of 2022, and ten more dairy digesters are expected to be completed by the fourth quarter of 2022. When completed, the seventeen dairy digesters built and operated by Aemetis are expected to produce around 440 000 MMBtu per year of renewable natural gas used in trucks and buses to replace carbon-based diesel fuel.

The 52 dairies planned for the Aemetis biogas project are expected to capture more than 1.4 million MMBtu of dairy methane and reduce greenhouse gas emissions equivalent to approximately 5.2 million metric tonnes of CO2 each year, which is equivalent to eliminating the emissions of about 1.1 million cars.

The Aemetis Biogas Dairy RNG Project, Aemetis Keyes Biofuel Plant Energy Efficiency Improvements, and the Aemetis Renewable Jet / Diesel Project include $ 57 million in grants and other support from the US Department of Agriculture , US Forest Service, California Energy Commission, California Department of Food and Agriculture, California State Treasurer’s Office, and Pacific Gas and Electric’s Energy Efficiency Program.


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