Constellation Energy Group, Inc. (Constellation Energy) is an energy company that conducts its business through various subsidiaries and joint ventures organized around three business segments: a generation business (Generation), a customer supply business (NewEnergy), and Baltimore Gas and Electric Company (BGE). Constellation Energy�s Generation business develops, owns, owns interests in, and operates electric generation facilities and a fuel processing facility located in various regions of the United States and Canada. Its NewEnergy business is a provider of energy-related products and services. BGE is a regulated electric transmission and distribution utility company. In May 2011, the Company acquired Star Electricity, Inc. (StarTex). In July 2011, it acquired MXenergy Holdings Inc. (MXenergy). In March 2012, the Company merged with Exelon Corporation.