Reviews for Constellation

The best review categories for Constellation are the order experience, with an average of 4.2 stars, and their plans and pricing, with an average of 4.1 stars.


Recent Good Review from Louis Gioia J

Constellation Energy
Easy to enroll, they provide good and timely information and my energy expense has decreased quite a bit.
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Louis Gioia J from Stamford, CT on May 7th, 2025


Most Recent 5 Star Reviews

11 Customer Reviews Written Overall


Read All 5 Star Reviews

Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend
Constellation Energy
Easy to enroll, they provide good and timely information and my energy expense has decreased quite a bit.
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Louis Gioia J from Stamford, CT on May 7th, 2025
Very Professional
I was helped to find the best rate and after an interview and my acceptance, I got a letter in the mail confirming my agreement. First rate service.
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Jackie from Hamden, CT on April 26th, 2025
Wonderful service and great promotions
Constellation always has good rates.
Plans & Pricing
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Customer Service
Account Management
Likely to recommend

Chris from Danbury, CT on April 14th, 2025
Owner
Great service from start to finish and amazing price. Thank you.
Plans & Pricing
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Account Management
Likely to recommend

Liz from Cos Cob, CT on March 17th, 2025
Review
Easy to telephone to get your service
Plans & Pricing
Order Experience
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Likely to recommend

Valerie from North Haven, CT on September 12th, 2024
So far so good!
Good price and no surprises.
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Order Experience
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Account Management
Likely to recommend

Tom M. from Bristol, CT on September 9th, 2024
Good Deal!!
Although we did not need any customer service, signing up was quick and easy and the rate excellent.
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Sandy from Madison, CT on March 17th, 2024
Great
Great
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Great from Bridgeport, CT on November 1st, 2023
Pleasant Transition
The switch to Constellation for our electric supplier went very smoothly. The representative was knowledgeable, courteous & friendly. The best part is that we will be saving money!
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Linda from Wilton, CT on October 19th, 2023
MR Goodwrench
It was ok
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Ken from Clinton, CT on September 20th, 2023
Great service
Electric bill was cut by 30%. Very pleased with Constellation!
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Slash Electricity Rates! from Newington, CT on August 21st, 2023



Most Recent 4 Star Reviews

6 Customer Reviews Written Overall

Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend
Great Company
We are very pleased with Constellation. They are great to work with and have a great rate
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Kevin R from Brookfield, CT on April 4th, 2025
Cheaper by the Kv
Easy to apply and follow through.
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Michael Kelting from Enfield, CT on March 29th, 2025
Bill savings
When I signed up for this it was supposed to be 1 year now I see its only 6 months. I guess I'll have to reup in June
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Bill Savings from Cheshire, CT on March 23rd, 2025
Jim albrycht
Good choice
Plans & Pricing
Order Experience
Customer Service
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Likely to recommend

Good from Bristol, CT on March 21st, 2025
DEALING WITH CONSTELLATION
ABSOLUTELY NO PROBLEM AT ALL.
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

BOB H from Brookfield, CT on July 30th, 2024
Shopping for energy supplier
On my latest search for the best energy price available Constellation was the best deal. Easy sign up experience.
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Tom from Newtown, CT on December 15th, 2023



Most Recent 3 Star Reviews

1 Customer Reviews Written Overall

Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend
Save money
Easy to apply
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Alan Hunt from Danielson, CT on September 22nd, 2024



Most Recent 1 Star Reviews

4 Customer Reviews Written Overall

Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend
Too expensive
Too expensive am changing to a more affordable company
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

Expensive After Trial from Andover, CT on September 21st, 2025
Yet to receive a bill
Yet to receive a bill. Had trouble switching as I had two residences on my Eversource bill and that seemed to be an issue yr people could not solve.
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

David Whitty from East Hampton, CT on September 16th, 2024
Do NOT do it! They are HORRIBLE!
They will drop you as a customer, after signing a contract, without even telling you. THANKFULLY, I needed a copy of a bill for a new resident form so I was locating my account information to set up an online account and I just happened to find out Im not longer a customer. I should have gotten an email is inaccurate, and had I not called, I wouldve have been late on my new company (who they shared my info with unknowingly) first bill which was due the next day. Over all, dont go with them. Sure the rates look better, but customer service is absolutely horrible and they dont care about respecting their customers. 0 reason to discontinue our new contract one month into owning our new home.
Plans & Pricing
Order Experience
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Account Management
Likely to recommend

Abigail C from East Hampton, CT on March 29th, 2024
Urgent- please contact me
Applied months ago and is still not active.
Sent request to customer service and no response!
Plans & Pricing
Order Experience
Customer Service
Account Management
Likely to recommend

LuAnn from New Milford, CT on November 27th, 2023