Photos: Barnyard energy

Here's a shot of a digester on the Wild Rose Dairy in Wisconsin. This farm sells the biogas generated by the digester to a utility. A large eight-digester project in Texas will produce a billion cubic feet of gas a year when complete.

American Images, Marshfield, WI

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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