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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Fuel Mix

Energy Sources

Our goal is to provide customers clean, cost-effective and reliable power. We are proud that GMP's energy portfolio is one of the cleanest in New England.

This chart shows our preliminary sources for Fiscal Year 2016, after the sale of Renewable Energy Credits (RECs). Click here to see sources before the sale of RECs. Click here to see how clean GMP's sources are compared to New England overall.

Market Purchases do not have any environmental attributes associated with them, as such these purchases are treated as having the ISO-NE residual mix. The system residual mix changes over time but as of Q1 2016 it was primarily natural gas (59%), nuclear (11%) and oil (13%).