Brand Identity for MXenergy Will Change to Constellation Beginning June 1

BALTIMORE (May 21, 2012) – Constellation Energy, a leading national competitive energy supplier, today announced the brand identity for MXenergy, a residential and small business energy provider Constellation acquired a year ago, will transition to the Constellation brand name, effective June 1, 2012.

The change means that approximately half a million MXenergy customers in 15 states will receive their superior customer care under the Constellation brand, as planned when Constellation closed the acquisition of MXenergy on July 1, 2011.

"We are pleased to welcome MXenergy customers to the Constellation brand and offer them our trusted customer service and reliability," said Mark Huston, senior vice president of Constellation's retail business.

MXenergy customers began receiving letters notifying them of the brand change in late April. Customers will continue to receive the same terms, conditions and rates. More information is available at http://www.mxenergy.com/ or customers may call 866-246-6731.

MXenergy has notified state regulators and the North American Electric Reliability Corporation of the brand change.

Constellation provides power, natural gas and energy products and services to homes and businesses. Constellation's retail business serves more than 1 million residential and about 100,000 business and public sector customers. Constellation demonstrates its commitment to environmental stewardship and a clean energy future by delivering innovative energy solutions that help customers manage energy use, reduce greenhouse gas emissions and utilize sources of renewable energy.