GMP Upgrades & Doubles Hydro Generation at Otter Creek Hydro Plant in Proctor

09 July 2015

Project Adds 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 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.” 

About Green Mountain Power 
Green Mountain Power (GMP) serves approximately 265,000 residential and business customers in 
Vermont and has a vision to be the best small company in America by partnering with Vermonters to 
improve lives and transform communities.  GMP is focused on a new way of doing business to meet the needs of customers with integrated energy services that help people use less energy and save money, while continuing to generate clean, cost-effective and reliable power in Vermont. GMP is the first utility in the world to get a B Corp certification, meeting rigorous social, environmental, accountability and transparency standards and committing to use business as a force for good. In 2014, Vote Solar named GMP a Solar Champion. More information at: www.greenmountainpower.com. Connect with GMP on Facebook and follow us on Twitter @GreenMtnPower. 

 Dorothy Schnure, Green Mountain Power, (802) 655-8418