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SoCalGas, Calgren Dairy Fuels expand renewable gas production facility

Southern California Gas Co. and biogas producer Calgren Dairy Fuels on Jan. 13 announced the addition of four more dairy digesters to Calgren's biogas operations providing renewable natural gas for injection to SoCalGas's system.

The four dairies will transport methane produced from cow manure to Calgren's biogas facility located in the Central Valley community of Pixley, Calif., according to a Jan. 13 news release. The additional dairies are anticipated to almost double the renewable natural gas, or RNG, production at the Calgren facility, which now collects methane from a total of 10 area dairy farms.

In addition, Sempra Energy subsidiary SoCalGas said it is working on making RNG available for use in homes for its customers in Southern California. As part of the state's climate goals, SoCalGas had earlier pledged to replace 20% of its gas supply with RNG by 2030.

The gas utility said it plans to begin by replacing 5% of its gas supply with RNG by 2022. SoCalGas has also requested the California Public Utilities Commission to allow customers to buy RNG for home use.

Calgren Dairy Fuels completed its construction of the California-based dairy biogas facility in July 2019.