Construction begins on centralized biogas cleanup unit to produce renewable natural gas

Aemetis says its Aemetis Biogas subsidiary has started construction on the dairy biogas cleanup and compression unit for the Aemetis Biogas Central Dairy Digester Project.

The biogas cleanup unit will produce renewable natural gas that meets utility gas pipeline standards and will be utilized as transportation fuel.

Recently, construction crews began site preparation and excavation, after which they will pour the cement foundation and then install and connect process equipment. The biogas cleanup unit will be co-located at the Aemetis advanced ethanol plant in Keyes, California, and will be directly connected to the PG&E natural gas pipeline.

The company plans to build 32 additional miles of biogas pipeline that will connect over 30 dairies to the gas cleanup unit and utility pipeline.

“The $12 million biogas cleanup and compression unit is scheduled to be operational by Q4 2021 to generate utility pipeline quality Renewable Natural Gas,” Aemetis Biogas president Andy Foster said in a statement.

In addition to the two operating dairies, the next phase of the Aemetis Biogas Central Dairy Project is scheduled to complete an additional 15 dairy digesters and 32 miles of pressurized biogas pipeline by the end of the second quarter of 2022, generating an estimated 440,000 MMBtu per year of biogas.


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