Constellation logo

Constellation Energy is one of the largest conglomerates in North America. They operate over 35 power plants in 11 states and are one of the leading competitive suppliers of electricity and natural gas, as well as Baltimore Gas & Electric, their regulated utility in central Maryland.

In 2012 Constellation was purchased by Exelon, which has business activities in 47 different states. Exelon is the largest competitive power generator in the United States and is the second largest electricity and natural gas supplier in America.


Our Grading of Constellation

Rating Overall

show/hide details


How Ratings Work

Constellation Plan Summary

Constellation does not currently have any plans available on Texas Electricity Ratings.

We recommend plans from Iberdrola Texas and Pulse Power instead.

View Constellation Plans

Customer Reviews of Constellation

Reviews Overall

show/hide details


Read Reviews

Most Recent Constellation Reviews  


First Single Apartment
Simple, easy, informative company for a provider. This was my first time not using a traditional company. Jay from Frisco TX

New service
Good customer service Linda from Augusta GA

A rated company
Good company and no problems barbara from Meredosia IL


4-5 Star Reviews: 348 (50%)