Central Vermont Public Service is laying claim to one of the fastest-growing renewable energy programs in the country: its customers can now choose to receive all, half, or a quarter of their electrical energy through the Cow Power program, which digests cow manure at participating dairy farms, captures the methane, and uses that to power generators. CVPS customers pay a premium of 4 cents per KWh, delivering another revenue stream for farmers, who are paid 95 percent of the market price for all of the energy sold to CVPS.