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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.

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Most Recent Constellation Reviews  

Very Good and cheapest service
Very good! Nil from Houston TX

Good until renew
Great company, no problems, however price jumps significantly 2nd year for returning customers, for new customers they get a much lower price point. Marketing strategy that does not reward or build loyalty. JJ from Abbott TX

I receive a weekly usage report and monthly bill by email. I am satisfied with service and rate. Double G from Spring TX

4-5 Star Reviews: 372 (51%)