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GMP Upgrades Hydro Plant at Otter Creek

Green Mountain Power has doubled hydro generation at the hydro plant in Proctor, adding significant low cost, renewable energy for Vermonters

Rutland, Vt. –Green Mountain Power has just completed an improvement project to its 110-year-old hydro plant on the Otter Creek in Proctor that will mean more renewable, low-cost hydro power for GMP customers. The added capacity makes this plant the largest of Green Mountain Power’s fleet of 32 Vermont hydro plants.

“Our Vermont hydro plants are the lowest cost source of electricity in our energy mix and we are pleased to be able to deliver on our promise of more renewable energy for customers,” said Mary Powell, President and CEO of Green Mountain Power. “Our customers and the environment benefit when we can produce this kind of clean, local and low cost power.  This hydro expansion ties into our vision as Vermont’s energy company of the future as we transform the 100-year-old grid of the past to one where more power is generated closer to home and Vermonters are using innovative products and services to be more comfortable, save money and use less energy.”

Hydro is a major part of GMP’s energy portfolio with forty-two percent of the power GMP customers receive coming from renewable hydro electricity.

The plant, formerly owned by Vermont Marble, needed significant repairs when it was acquired by GMP in August 2011.  Four of the five turbines were not functional, so GMP completely replaced three turbines and rebuilt another. With the renovations, the plant now has 10 megawatts of generating capacity and is expected to produce an estimated 38 million kilowatthours a year, compared to the 19 million kilowatthours it recently generated prior to the upgrade. That’s enough to energy to power about 5,300 homes.

The renovation began in 2012 with construction of a bridge to access the hydro plant. The only access had been a walk way via a series of ramps and stairs to the station for personnel and an old rail-lift system on the hill between the plant and the Marble Museum. The $15 million redevelopment project employed local, regional and specialty contractors, creating economic benefit to the region throughout construction. GMP took great care to protect the historic marble powerhouse structure, which was built in 1905.

“We are really pleased with the work GMP did to upgrade the historic Proctor hydro plant and thank them for their commitment to our town and to preserving this important local asset,” said Bill Champine, chair of the Proctor Selectboard. “It is a big improvement that will benefit the town as well as GMP customers and we look forward to the added improvements to recreation areas that will be done in 2016. This will help the town’s prosperity plan that we have been working on for more than a year.”

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