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
- #9 of 9 best companies in Energy Supplier
- #8 of 8 best companies in Electric Utility Company
- #8 of 9 best companies in Green Energy Supplier
- #5 of 5 best companies in Housing Utility Company
- #1 of 1 best companies in 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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I’ve had no communication or updates…
I’ve had no communication or updates form your company after signing up. I continue to receive bills from my prior provider at a significantly higher price now that my contact has expired and I still don’t know if you actually set up my account or just lost my order.

Reply from Constellation
Happy Camper...
For so many years, since I transferred my service to Constellation Energy, I like their energy rate. They have the cheapest rate compared to my previous providers. Their customer care service is very helpful and easy to talk to. They will try their best to solve my concerns or issues.
The customer service is very good
The customer service is very good. They have helped me many times.
Customer Service needs help
I subscribed to a 3 month plan to try your company out. I was disappointed. First, you said my plan date would expire after 2 months instead of 3. I called customer service. The person I spoke to wasn't very intelligent. He couldn't figure out when the end of 3 months would be! Finally, we got that straightened out. Later, I had to call customer service again because the ending date of my contract went back to the 2 month date. Again, customer service had a hard time with math figuring out when 3 months would end. FINALLY, it was straightened out. Other than customer service, the actual electric service and billing were fine;

Reply from Constellation
I have been with constellation for 15…
I have been with constellation for 15 years. I stay with them because they don’t go up all the time like electric companies do. They’re pretty fair on pricing per kilowatt and when you call to talk to someone at constellation, they have not been rude. They have been kind and help with your problem if you have one or question.
My review
I have been with Constellation for sometime now. Customer Service is really good and their rates are very competitive.
A very happy customer
A very happy customer! I’ve been with Constellation now for many years. I love that they keep me informed of how many kilowatts I have used on a weekly basis. It gives me an idea of how much energy I have used and informed on those days when they are higher. I keep tabs on my account. I appreciate knowing and anticipating what my bill will be each month. By the same manner, I welcome those tips on how to conserve energy and lower my bill.
Service is great
Service is great, bill arrives in a timely way. There are numerous perks with the service, such as how your ac is functioning.
No problems so far
No problems so far. I once had to call Constellation and got someone on the phone. being able to speak directly to someone is important.
The understanding the willing to go above and beyond to help someone out
Everything I call or have any concerns are any kind of doubts
Everyone's always willing to help me out to explain things to go above and beyond to make sure that I get the best quality service you all always offered me. So that's why I choose to continue having you guys for my electrical services. Thank you so much.
How fast I received a phone call
Satisfied customer Maggie Young
This is the best electricity company ever. I'm on a fixed income and I try to keep my usage low. Thanks for letting me know about the working of the air conditioner. That really help, if something is not working, Id be able to have it fixed before I began to lose money I can't afford.
All great except for increase in costs…
All great except for increase in costs this year.

Reply from Constellation
Great service and best rates
Great and friendly customer…
Great and friendly customer service,when you call they are cool and positive attitude,never disappoint
Constellation is good but needs cheaper rates
Basically been happy with Constellation but wish rates were a little cheaper.

Reply from Constellation
The representative was very helpful and…
The representative was very helpful and explained how my my issue would be solved quickly! 🙌
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