Renewable energy from methane

A Vermont farm is turning cow manure into electricity.
By: Ethan K.

What would you do with 35,000 gallons of cow manure? The Audet family of Vermont has turned their manure into electricity with the help of their company, the Central Vermont Public Service Corp. Their 200-kW generator produces energy from the extracted methane in the manure, and is enough to power 300 - 400 homes in Vermont. Their dairy farm is now making more than $120,000 a year just from the sale of their "cow electricity".

They now give tours around their farm to individuals who are interested in their renewable energy. The manure is collected from the stalls and dropped onto a conveyor belt which takes the manure to its resting place in a digester. From this digestor, the methane gas is pumped into their shed which houses the generator. Is it just me or is renewable energy getting gross?