Constellation Electric Offers Renewable Power Option for Residential Customers in Central Maryland with CleanEnergySM Product

Constellation Energy (NYSE:CEG) today announced that Constellation Electric is offering a renewable electricity supply option to residential customers in the BGE utility service area in Central Maryland. The new offering, Constellation Electric CleanEnergy^SM, gives customers the ability to match 100 percent of their electricity with renewable energy certificates from clean, renewable wind power sources.

"Our customers have been making smart environmental choices by reducing their energy demand through energy efficient products and services, and with Constellation Electric CleanEnergy we wanted to give them the option of improving the sustainability of their energy supply too,” said Kevin Klages, president & CEO of BGE HOME, the company offering Constellation Electric service. "Restructured energy markets like Maryland’s give customers the ability to shop for their power, and this creates more options, such as the ability to select 100 percent wind power for their homes.”

Constellation Electric has a 100 percent wind product offered at a one- or two-year fixed rate option. Constellation Electric CleanEnergy is accepting enrollments for its current wind offer through June 25. Current Constellation Electric customers who wish to add the wind option to their existing electricity supply contract can do so for an additional 1 cent/kWh by calling Constellation Electric through June 25. For details on the plans and to switch supply service, customers can visit www.constellation-electric.com/wind or call 1-888-219-4239.

Customers can also select non-renewable supply options and choose between fixed prices that vary depending on term and offer date. Customers will not incur any additional fees, taxes or charges for enrolling with Constellation Electric.

Customers who purchase electricity from Constellation Electric, or any competitive supplier, will still receive a single bill from the utility, which will continue to read the meter, respond to emergencies and deliver the power to customers.

This offer is made by BGE Home Products & Services, Inc. doing business as Constellation Electric, which is not the same company as BGE, a regulated utility. Constellation Electric CleanEnergy is certified by Green-e Energy, which certifies that Constellation Electric CleanEnergy meets the minimum environmental and consumer protection standards established by the non-profit Center for Resource Solutions. For more information on Green-e Energy certification requirements, call 1-888-63-GREEN or log on to www.green-e.org.

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 in the United States and Canada, totaling approximately 8,200 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 $15.6 billion in 2009.