Our Grading of Constellation

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Constellation Plan Summary

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

We recommend plans from Santanna Energy Services and Energy Harbor instead.

View Constellation Plans

Customer Reviews of Constellation

Reviews Overall

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Most Recent Constellation Reviews  


Great UTILITY...
PAINLESS. Rick Savidge from Wellfleet MA

New to Constellation and very Happy
I only signed up with Constellation about 2 months ago. So far so good. I was attracted by the price, terms of the agreement and other reviews. ST from Highland Park TX

Good
Wonderful Jun from Suwanee GA


4-5 Star Reviews: 488 (53%)