Constellation NewEnergy to Supply Electricity to Commonwealth of Pennsylvania Government Facilities

Constellation Energy (NYSE:CEG) announced today that its subsidiary, Constellation NewEnergy, Inc., has signed an agreement with the Commonwealth of Pennsylvania to supply electricity to 29 Pennsylvania state government facilities. Under the competitively bid agreement, Constellation NewEnergy will supply 27,000 megawatt hours of electricity to state office buildings and certain transportation, correctional and Army National Guard facilities, among others.

"Constellation NewEnergy has considerable public sector experience to assist government agencies in controlling energy costs and enabling more public resources to be focused on delivering critical services to citizens. We’re pleased to be working with the Commonwealth of Pennsylvania,” said Louis Hutchinson, vice president of public sector for Constellation NewEnergy.

Constellation NewEnergy is the leading commercial & industrial electricity retailer in the U.S., delivering services that control costs, create budget certainty, and improve sustainability for customers. In addition to working with public sector customers in Pennsylvania and other states, Constellation NewEnergy also serves more than 150 federal government sites that include the U.S. Capitol and the Smithsonian Institution. The company supplies electricity to more than 80 businesses in 300 Pennsylvania locations, and to more than two-thirds of FORTUNE 100 businesses nationwide, delivering approximately 14,100 megawatts of peak load last year.

Constellation NewEnergy is also a leading provider of renewable energy certificates and demand response services that enable government agencies in states such as Pennsylvania qualify for payments from regional electrical grid operators in exchange for reducing energy usage during times of peak demand.

About Constellation NewEnergy

Constellation NewEnergy (www.newenergy.com) is a leading competitive supplier of electricity, natural gas and energy-related services to commercial, industrial and institutional customers throughout the United States. A subsidiary of Constellation Energy (NYSE:CEG), Constellation NewEnergy operates in all competitive energy markets throughout the U.S., providing products that enable customers to effectively manage and control energy costs.

About Constellation Energy

Constellation Energy (www.constellation.com) is a leading supplier of energy products and services to wholesale and retail electric and natural gas customers. It owns a diversified fleet of generating units located throughout the United States, totaling approximately 9,000 megawatts of generating capacity, and is among the leaders pursuing the development of new nuclear plants in the United States. The company delivers electricity and natural gas through the Baltimore Gas and Electric Company (BGE), its regulated utility in Central Maryland. A FORTUNE 500 company headquartered in Baltimore, Constellation Energy had revenues of $19.8 billion in 2008.