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CHICAGO--([ BUSINESS WIRE ])--Constellation and the Chicago White Sox today announced the teamas second annual aGreena game Tuesday, Aug. 21, against the New York Yankees, when electricity usage stadium-wide will be 100 percent offset by renewable energy certificates (RECs).

"Constellation can help homeowners, municipalities and businesses save on energy bills in ways that advance environmental stewardship."

Constellation, energy provider to the Chicago White Sox and business and residential customers across Illinois, will donate RECs to offset electricity expected to be used at the well-attended evening matchup. The RECs represent the environmental benefits of electricity generated by wind, solar or other renewable power facilities.

To expand the focus of the teamas environmental stewardship beyond U.S. Cellular Field, the White Sox Volunteers Corps and volunteers from Constellation will meet from 9 a.m. to noon, Aug. 21 at McGuane Park in nearby Bridgeport to spread mulch at a playground and re-turf baseball fields.

aEnvironmental stewardship is important to our organization and our fans,a said Brooks Boyer, senior vice president of sales and marketing for the White Sox. aAmong the many ways we demonstrate that commitment is through our annual Green game and also by volunteering to improve McGuane Park and other parks and recreational facilities in our communities.a

aEvery White Sox home game is special, but weare especially proud of this one because weare helping the Sox achieve their strategy of lowering energy costs while enhancing sustainability,a said Bruce Stewart, chief marketing officer, Constellation. aConstellation can help homeowners, municipalities and businesses save on energy bills in ways that advance environmental stewardship.a

Constellation has been a leading energy provider to Illinoisa businesses for more than a decade, providing power and natural gas to the stateas largest employers, schools, hospitals and municipalities. The company is an emerging leader in residential electricity supply and now provides thousands of Illinois homeowners with low, fixed-price per kilowatt plans that can offer price certainty when compared to standard utility electricity rates.

About Constellation

Constellation([ www.constellation.com ]), a subsidiary of Exelon Corp., is a leading competitive retail supplier of power, natural gas and energy products and services for homes and businesses across the continentalUnited States.Constellationas retail business serves more than 100,000 business and public sector customers, including more than two-thirds of the Fortune 100, and nearly one million residential customers.

Exelon Corporation (NYSE:EXC) is the nationas leading competitive energy provider, with approximately $33 billion in annual revenues. Headquartered in Chicago, Exelon has operations and business activities in 47 states, the District of Columbia and Canada. Exelon is the largest competitive U.S. power generator, with approximately 35,000 megawatts of owned capacity comprising one of the nationas cleanest and lowest-cost power generation fleets. Exelonas utilities deliver electricity and natural gas to more than 6.6 million customers in central Maryland (BGE), northern Illinois (ComEd) and southeastern Pennsylvania (PECO). Learn more at: [ www.exeloncorp.com ].