Photos: Barnyard energy

Biogas from the manure digester is fed into a generator (the yellow thing), which provides about 700 kilowatts of the electricity required at California's Joseph Gallo Farms, a major cheesemaker. The heat from the generator is then captured and used to run the boiler (the silver thing) that powers the boilers, where cheese is made.

Gallo Farms

About Bill Detwiler

Bill Detwiler is Managing Editor of TechRepublic and Tech Pro Research and the host of Cracking Open, CNET and TechRepublic's popular online show. Prior to joining TechRepublic in 2000, Bill was an IT manager, database administrator, and desktop supp...

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