Gustavo G.
Great experience with Constellation
Great experience with Constellation

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Constellation (constellation.com) has 362 customer reviews on Five Star Index, with an average rating of 4.2 out of 5.
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Gustavo G.
Great experience with Constellation
Venkata K.
Constellation sent email saying that service start as 10/01 but they didn’t transfer and not started service . I ended up with paying variable payment for 1 month with existing provider .
Response from ConstellationOct 6, 2026
Hi Venkata, We are sorry to hear about your experience. If you signed up after September 20th, your service with Constellation will not start until November 1. If you signed up before September 20th, your service should start on October 1 if AGL approves the switch by the 20th. This is the same timeline for all providers. We have sent you an email requesting a copy of your confirmation email along with other information. Once we receive that, we will escalate it to our customer care managers to look into. Thank you.
Richard
Since I completed the application for service, I have not received any confirmation that the information provided was entered into the system, and that I was now a customer with an expected start date also a synopsis of the service and costs were not provided at the completion of the application and acceptance by constellation am I a customer this month or not???
Response from ConstellationOct 6, 2026
Hi Richard, We are very sorry to hear about your experience. You should have received a confirmation email shortly after your request to switch was submitted. Once your switch is complete, you should receive a Welcome Packet from Constellation. We have sent you an email requesting some additional information. If you could please respond to that, we can escalate it to our customer care managers to look into. Thank you.
Fran
The whole process is confusing and complete lacks of status updates. The Website is a DISASTER! Hard to imagine a website so dysfunctional in 21sth century. Unable to login and tried your "forgot password" feature. Tried both email and phone (and both text and call) multiple times, and NONE of them worked! Tried contacting your customer service via the form, the form couldn't be submitted. Tried your chat and it was also a vicious circle. Absurd to the core! Your billing statement is also confusing as hell - it has Customer ID, account ID, and utility ID. Which ID should I use to make online payment from my bank? It's been a really bad experience. You are a joke.
Response from ConstellationOct 5, 2026
Hi Fran, We are very sorry to hear about the trouble you had with our website and online account services. While we have not received any other reports of issues with our online chat or phone system, we apologize that this was your experience. We sent you an email requesting some additional information so that we can escalate this to our customer care managers to look into further. Thank you.
Diane
It was relatively easy to renew. No issues otherwise.
Marylynn G.
Because I wanted a fixed rate and talking with them and letting them explain their company to me, I was confident I was going with the right place.
Lamoya L.
What a great way to keep me interested in my energy usage & account. Rewarding me for staying on top of it is brilliant!
suresh B.
good service