Kroger's anaerobic digester, 13 million kWh/year
I found this link over on Builditsolar. Really interesting article and some pretty great power output here! It doesn't mention cost, but ROI seems pretty good.
A powerful use for spoiled food - Los Angeles Times Quote:
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When the slurry is finished producing more methane, it will make a high quality fertilizer, with fixed nitrogen that won't run off in the first rain fall.
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Yep. The article mentions that they do that.
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