Residential and Business Energy Solutions
We power some of America's largest companies. 
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Integrys Energy Services, Inc. has joined Constellation!
Integrys Energy Services, Inc.
What does this mean to Integrys customers? No changes to service or contracts at this time. We will be merging our companies and processes to ensure seamless service and a positive customer experience. We will keep you informed of our integration progress. Please continue to contact your current customer care and sales resources.

About Constellation
Constellation, an Exelon company, is a leading competitive supplier of power, natural gas, renewable energy and energy management products and services for homes and businesses across the continental US. We provide integrated energy solutions—from electricity and natural gas procurement and renewable energy supply to demand-side management solutions—that help customers strategically buy, manage and use their energy.
More than 2.5 million residential, public sector and business customers, including more than two-thirds of the Fortune 100, rely on our commitment to innovation, dependability, transparency and service. That is the kind of value you and your communities can expect from Constellation.