(photo: 4028mdk09)

Cow Manure to Power Vermont Ski Lift

Killington, VT – Skiing and dairy farms are both inextricably linked to Vermont, so it should not be entirely surprising that the state’s Killington Resort will power its K-1 Express Gondola during the 2012-13 season with electricity generated directly from cows on Vermont dairy farms.

The initiative was made possible through Killington’s enrollment in Green Mountain Power’s (GMP) Cow Power program, which enables GMP customers to purchase all or part of their electricity at a premium and support Vermont’s dairy farms as well as the development of new cow power projects across the state.

(photo: 4028mdk09)
(photo: 4028mdk09)

“Killington Resort is thrilled to work with the GMP Cow Power program and local dairy farmers to power the K-1 Express Gondola starting opening day of the winter season,” stated Mike Solimano, President and General Manager for Killington Resort. “GMP Cow Power is truly an innovative way to create renewable energy and it’s another example of how we continue to implement environmental initiatives throughout our resort.”

RELATED STORY:  2023-24 Ski Season Progress Report as of February 15, 2024

Perfected over the last ten years, the GMP Cow Power process is very simple. Farms collect cow manure throughout the day, mixing it with wash water from the milking equipment which is then pumped into an anaerobic digester. The slurry flows through a digester for about three weeks at 100 degrees Fahrenheit, allowing bacteria to convert the manure into biogas, comprised of about 60% methane gas and 40% carbon dioxide. The biogas is then delivered to a modified natural gas engine, which drives an electric generator to create electricity. Finally, the energy generated is fed onto the GMP electrical system which ultimately powers the K-1 Express Gondola.

The leftover manure in the digester does not go to waste; it is separated into solid and liquid portions. The liquid portion is used as enhanced fertilizer and the solids, consisting of plant fibers including grass, corn stalk fibers, grain hulls, etc. can replace sawdust as bedding for the cows.

“Large customers like Killington Resort with significant demand can make important contributions to the continued development of this innovative renewable resource,” said Mary Powell, President and CEO of Green Mountain Power. “Through their investment, they will help us continue to expand the GMP Cow Power program making this opportunity available to more Vermont dairy farms. These farms are the backbone of Vermont’s agricultural economy; therefore Killington is to be commended for its commitment to both renewable energy and Vermont farming.”

RELATED STORY:  2023-24 Ski Season Progress Report as of February 29, 2024

Currently, 13 Vermont farms, with roughly 10,000 total dairy cows producing 300,000 gallons of manure per day, participate in the GMP Cow Power program and are compensated for their electric generation and the related environmental benefits. The energy is used locally and the program continues to grow annually with new farms and new customers joining regularly.

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