Main Office

Green Mountain Power 163 Acorn Lane Colchester, VT 05446 1-888-835-4672

Office hours Mon to Fri, 8 a.m. – 5 p.m.
We are closed on major holidays, the day after Thanksgiving and Christmas Eve

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Green Mountain Power

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Proud to Be a Certified B Corporation

We believe in using business for good.

Green Mountain Power is part of a community of more than 1,100 companies across 60 industries with one unifying goal: redefining success in business. We meet rigorous standards of performance, accountability, and transparency, and are using the power of business to alleviate poverty, address climate changes, and build strong local communities and great places to work.

GMP is committed to our community and the environment, as we transform into Vermont’s Energy Company of the Future to provide our customers with energy efficient products and services to help them save money by using less energy.

Green Mountain Power is the first utility in the world to receive B Corp certification. Other Vermont B Corps joined us for the celebration on December 1, 2014. Pictured: Jay Coen Gilbert, co-founder of B Lab, Mary Powell, President and CEO of GMP, Ben Cohen and Jerry Greenfield, founders of Ben & Jerry's.

Our mission is to embrace a new energy system that can improve lives, reduce costs, and be produced in a more environmentally and economically sustainable way. We are actively pursuing moving away from the traditional grid, to one that is more resilient and reliable, and that uses a series of microgrids through renewable generation and innovative energy storage.

We are also partnering with customers to offer integrated services like eHomes, a total home energy offering, that is already helping Vermonters reduce fossil fuel use and save money.

Photo: Amanda Wormann

Why We Became a B Corp

We became a B Corp to deepen our commitment to creating positive change in the community and the environment through a new model of doing business. We embrace the mission to do good in all things we do, putting customers first, and we are very honored to be the first utility to ever get the B Corp designation.

Partnering with Vermonters

GMP is partnering with Vermonters to show that energy can improve lives and transform communities. Energy can spur socio-economic change for residents, helping people save money and move toward more renewable sources. GMP is committed to its employees, customers and Vermont to exceed expectations, and show a new model of doing business that offers holistic energy solutions that move people off of fossil fuels, and creates a new energy future.


To learn more about B Corp visit