Bert Castelannelli stands atop a covered lagoon that traps methane gas from the dairy near Lodi he managed in 2004. The methane gas was converted into electricity and sold back to PG&E.
Bert Castelannelli stands atop a covered lagoon that traps methane gas from the dairy near Lodi he managed in 2004. The methane gas was converted into electricity and sold back to PG&E. Jay Mather Sacramento Bee file
Bert Castelannelli stands atop a covered lagoon that traps methane gas from the dairy near Lodi he managed in 2004. The methane gas was converted into electricity and sold back to PG&E. Jay Mather Sacramento Bee file

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‘Greener’ cows can cut carbon emissions at dairies

December 29, 2015 4:00 PM

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