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

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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

Wonderful Jun from Suwanee GA

4-5 Star Reviews: 488 (53%)