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Poop-to-power plant now online

It takes slightly more than three gallons of liquid cow manure to create one kilowatt-hour of electricity.

A lot of poop. A small amount of electricity. A big environmental boost to a dairy farmer.

A fledgling anaerobic manure digester is now running at roughly 80 percent capacity near Rexville in southwestern Skagit County. The plant produced its first power on Aug. 30 and will host Gov. Chris Gregoire at a ceremony next Monday.

The digester accepts the liquid manure in a big holding tank, where it gives off methane gas that is then burned to produce electricity.

It is the first or fourth of its kind in Washington — depending on how you catalog the device. Ferndale-based Andgar Corp. http://www.andgar.com/ built all four.

By JOHN STANG
SEATTLEPI.COM STAFF

Full Story: http://www.seattlepi.com/local/410362_cow22.html

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