Constellation -- Profile Analysis

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Constellation is the US's largest producer of carbon-free energy and a leader of retail supply of power, natural gas and home services for residences across the nation. Headquartered in Baltimore, their generation fleet produces enough energy to power 15 million homes and is helping to accelerate the nation's shift to clean energy with more than 32,400 megawatts of capacity and annual output that is 90 percent carbon-free. Constellation serves approximately 2 million residential, public sector and business customers, including three-fourths of the Fortune 100.

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Constellation Plan Summary

Constellation does not currently have any plans available on New York Energy Ratings.

We recommend plans from American Power & Gas and Kiwi Energy instead.

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Customer Reviews of Constellation

Reviews Overall

3rd place
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Most Recent Constellation Reviews  


Great pick
Easy sign up, sit back and know your meter is spinning slower! Lori Biehler from Hawley PA

Shopping for energy supplier
On my latest search for the best energy price available Constellation was the best deal. Easy sign up experience. Tom from Newtown CT

Easy of service
Easy to contact and set up service. Happy from Hephzibah GA


4-5 Star Reviews: 622 (53%)