Founded in 1997, The Clean Energy Group (CEG) is a coalition of electric generating and electric distribution companies that share a commitment to responsible environmental stewardship. The mission of CEG is to support and enhance the efforts of its members in understanding state and federal legislative, regulatory, and policy developments in environmental and energy areas. CEG assists its members in formulating and achieving their business goals and commenting on EPA regulations to ensure they are economically and environmentally sustainable.

ERM coordinates CEG initiatives and outreach and provides administrative and technical services to the group.