California’s Calgren Renewable Fuels uses renewable energy generated onsite to power its renewable fuel production process.
When the Calgren Ethanol Biodigester officially opened in Tulare County, California, early this year, it represented a major commitment by the state of California to employ sustainable energy production. Located in the town of Pixley, the biodigester utilizes waste from dairy operation Four J Farms to power the production of tens of millions of gallons of ethanol, all consumed in the Central Valley. It is the first digester of its kind in the state, relying on agricultural waste to create renewable natural gas to power another renewable energy facility, essentially creating a zero-waste life-cycle.
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