Price is a little higher than I want, but the length of the service was what made me switch back to Constellation.

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Company details
- Energy Supplier
- Electric Utility Company
- Green Energy Supplier
- Housing Utility Company
- Nuclear Power Company
Serving millions of homes across the U.S.
Written by the company
- Constellation Energy is one of America’s most trusted and experienced energy providers, serving millions of homes across the U.S. As a Fortune 200 company (Nasdaq: CEG) and the nation’s largest producer of clean, carbon-free energy, we’re proud to help families power their homes more reliably and sustainably—with a wide range of electricity and natural gas plans designed for flexibility, value, and peace of mind.
- We offer fixed-rate plans to help you avoid seasonal rate hikes, renewable energy options to reduce your carbon footprint, and easy-to-use tools that let you track your usage and savings. Whether you're new to energy choice or switching providers, Constellation makes the process simple and transparent.
- We’re here to make energy choice simple, rewarding, and built around you. If you’re a current or past customer, we’d love to hear about your experience. Share your review here on Trustpilot and help others make informed energy decisions.
- Learn more at www.constellation.com
Constellation
Why Sign Up with Us
Quick and easy signup process
With easy online enrollment, getting started with Constellation takes just a few minutes.
Get rewarded every month
Customers can take advantage of Constellation Rewards, giving you access to exclusive perks, discounts, and savings just for being a customer.
We make switching easier
In select markets, we’ll even cover your cancellation fee when you make the switch—making it easier and more affordable to choose Constellation with confidence.
Contact info
1310 Point Street, 21231, Baltimore, United States
- 855-465-1244
- constellation.com

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Enrollment Failure - No Contact
I tried to enroll in service online (order TX28746724), and I even contacted support to make sure everything went through and I was told yes, everything was good. Now nearly one month later I find that the enrollment did NOT go through and no one can tell me why and now I'm stuck to pay the delivery fees through my apartment complex and penalties for not having service setup, despite being assured from Contellation that I would have service.

Reply from Constellation
Fast and prompt service
Handled the our electricity need very…
Handled the our electricity need very efficiently.
I have only had your service less than…
I have only had your service less than a month. Thus I cannot give you a fair and thorough review.
Thank you.

Reply from Constellation
This is one messed up company
This is one messed up company. They clear the check and then send you a disconnect notice. On top of that, they hold the checks for a month before depositing them.
Whoever runs their departments are brain dead idiots.

Reply from Constellation
Signed up for new service
Signed up for new service. No confirmation service started. No online account information provided. No new customer service.

Reply from Constellation
Found the representative very forceful…
Found the representative very forceful in his sales pitch. Was switching carriers and was on the phone with him for an overly( in my opinion) long conversation. He was trying to upsell me on ac/ furnace warranty even though I had explained to him that my units were literally 5 days old and already guaranteed. I also was taken aback when he asked for my SS# to do a credit check,even tho I had been a previous customer. Had never had that happen with other utility providers. Maybe he thought that he could bully a 75 year old female into extra purchases ,but he has never tangled with an elderly Scottish woman. Sorry ,just my opinion.

Reply from Constellation
It was a nightmare switching to your…
It was a nightmare switching to your service. Id process sucked completely. Customer service never returned calls

Reply from Constellation
UI billing price low regular my account
Regular normal good pretty much price low on billing my account so l feeling little worries about heat energy weather on billing account and l did try try call hard time reach action community agency for fill out low price but too too cold weather
I didn't choose Constellation
I didn't choose Constellation. I canceled service during cool off period and requested deposit back. I went with another company.

Reply from Constellation
GOOD FINE GOOD
Constellation customer for years
Constellation customer for years. No heat for over 20 days. The first technician came out on 12/19. He expressed that he did not work on propane heaters and left. The second technician stated that new burners may be needed. The third technician arrived on 12/29 to install the burners. He made no attempt to test the new burners but stated that the previous technician should have known a new system was needed. We were advised that the expected parts would arrive on January 5. No response from the company. We called and were advised that the parts might be in the boxes delivered to their office, and they would confirm. No response. We called again on January 7 and left message. Received a friendly call back from CS Rep and was advised that only 3 of the 4 parts had been received and that we should expect a call from the Expediting Dept within 24 hours. Twenty-four hours later, - CRICKETS. I called again. Now told the number I'm reaching is for new installs only. CS Rep checked anyway. She tells me the burners are on order. Ugh!!! I explain the above to her. She sends me back to a previous number that sent me to her. Now working with another CSR. All Reps were kind, but No ETA to share. Reached out to BBB. Constellation responded to complaint saying a technician was schedule. BBB closed ticket saying Constellation acted in good faith by responding. Technician came and repeated what technician said on 12/29. Still no heat. So far, 25 days without heat and very poor communication from Constellation. NO ETA in sight! Don't believe the 'A" BBB rating. It's time to move on. Obviously, they don't mind losing $$$ to install new equipment and renew their service plans. We're moving on!!! Goodbye Constellation!!!! UGH!!!

Reply from Constellation
Came across incompetent rep when…
Came across incompetent rep when signing up by phone Confused network service provider and power supplier

Reply from Constellation
The customer service agent was…
The customer service agent was extremely helpful and very kind, I would love to be assisted by her again.
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