For years, dairy farmers have used cow manure as fertilizer to spread over crops like corn and hay. But some farms in western Massachusetts have a new use for all that manure — renewable energy.

The farms, in Deerfield, Hatfield and Granville, are embarking on a project to turn cow manure into electricity as a way to become self-sustaining and stabilize their finances in what they say is a volatile market.

Bar-Way Farm in Deerfield began churning out power from a mix of manure from its 500-cow herd and food byproducts earlier this year, even though farmer Peter Melnick says he’s still waiting for Eversource to connect the new methane digester to the grid so he can get paid for excess electricity that’s now being produced and essentially going to waste.

Read the rest of the story at the Greenfield Recorder.