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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If you are contacting us about a current account, please include the address where service is provided, the account number and the name on the account. This will help us respond faster.

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Convenience means an easy and obvious place to log in to your account.

Click on the “Log in” button to your right to access all of your account information. To register your account, you will need a username, password, email address, and account number and password. To log in, you just need your username and password.

Green Mountain Power

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Implementation Plan

GMP Smart Power is here. Now we are going to make it even smarter.

We've been hard at work bringing GMP Smart Power online for you. Now that we have fully implemented the first part of the upgrade, you'll start to notice a few changes, like our new online portal that allows you to view much more detailed information about your energy use. As we continue to make updates to GMP Smart Power, you'll have even more opportunities to be more efficient and lower your energy bill.