Green Mountain Energy has been improving the environment with renewable energy since 1997. Our promise to the planet? To change the way power is made. Thanks to our community of customers, we’re making it a reality. So far, we’ve prevented as much CO2 as taking 5.9 million cars off the road for a year!
Take our eco-quiz to find out how much CO2 you could prevent, just by choosing clean energy.*

An apartment.

A small home (<2,000 sq. ft.).

A large home (>2,000 sq. ft.).




Of course! I'm no slob.

Nope. I wash 'em when I run out.

Laundry? What's that?

Freezing cold.

A little cool.

I don't need AC! That's what fans and blinds are for.

Very warm.

A little warm.

I don't need heat! That's what a fireplace is for.
Good news! Based on your estimated electricity usage, you could prevent about:
pounds of CO2 emissions every year.

That's like driving fewer miles.
Good news! Based on your estimated electricity usage, you could prevent about:
pounds of CO2 emissions every year.

That's like recycling plastic water bottles.
Good news! Based on your estimated electricity usage, you could prevent about:
pounds of CO2 emissions every year.

That's like planting trees.
Ready to make it a reality? Make your promise to protect the planet by choosing 100% clean energy for your home.
* Actual energy use and environmental impact will vary. Energy consumption estimates are based on data reported in Table CE3.1 Household Site End-Use Consumption in the U.S., Totals and Averages, 2009, Residential Energy Consumption Survey, prepared by the Energy Information Administration. CO2 emission rates are based on U.S. annual non-baseload output emission rates from eGRID2014v2 GHG Annual Output Emission Rates, prepared by the U.S. Environmental Protection Agency. CO2 equivalency calculations are based on the Greenhouse Gases Equivalencies Calculator at www.epa.gov.
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