COW POWER Vermont dairy farmers work with a utility to diversify their incomes, using AD systems to generate biogas for electricity. THROUGH its award-winning Cow Power program, Central Vermont Public Service (CVPS), a Vermont utility headquartered in the city of Rutland, is helping dairy farmers diversify their incomes by turning manure into electricity. The farmers process manure in anaerobic digesters to generate power, which CVPS customers voluntarily pay a premium to purchase. In addition to income from electricity sales, farmers are reaping other benefits from digesting the manure, including capturing surplus heat for their farms and hot water, using the...