BALTIMORE, Sept. 5 -- Constellation Energy (NYSE: CEG) today announced that its subsidiary, Constellation NewEnergy, will work with the San Francisco Museum of Modern Art (SFMOMA) to ensure that its "Your tempo: Olafur Eliasson" exhibition is matched by regional geothermal energy. Constellation NewEnergy has secured green power for the duration of the exhibition (Sept. 8, 2007 through Jan. 13, 2008).

With the exhibition exploring numerous environmental issues including global warming, SFMOMA wanted an energy partner to help reduce the exhibition's carbon footprint. Given SFMOMA's support of locally produced renewable power, Constellation NewEnergy was selected in part because of its ability to match the exhibit's electricity usage with energy generated by the Geysers Geothermal Facility located in Northern California. This clean energy purchase is the equivalent of avoiding the emissions from more than 100 barrels of oil.

"We are proud to support SFMOMA's sustainable environmental practices by securing regional sources of geothermal energy to match the electricity usage for the duration of the 'Your tempo: Olafur Eliasson' exhibition," said Carrie Cullen Hitt, vice president of Product Management - Renewable Products for Constellation NewEnergy. "The presentation's theme of global warming and SFMOMA's environmental efforts are a perfect fit for Constellation NewEnergy's commitment to offer innovative green energy products and solutions to our customers across North America."

Constellation NewEnergy, a wholly owned subsidiary of Constellation Energy (NYSE: CEG), is a leading competitive supplier of electricity, natural gas and energy-related services to commercial, industrial and institutional customers throughout North America. Constellation NewEnergy operates in all competitive energy markets throughout Canada and the United States, providing products that enable customers to effectively manage and control energy costs. Constellation NewEnergy's regional expertise, coupled with its national presence, provides customers with customized energy products and services while leveraging the assets of one of the strongest integrated energy companies in North America. Constellation NewEnergy, based in Baltimore, serves more than 19,000 commercial, industrial and institutional customers throughout 31 states and three Canadian provinces representing nearly 14,000 megawatts of peak load and more than 354 billion cubic feet of annual natural gas consumption.

Constellation Energy, a FORTUNE 200 company with 2006 revenues of $19.3 billion, is the nation's largest competitive supplier of electricity to large commercial and industrial customers and the nation's largest wholesale power seller. Constellation Energy also manages fuels and energy services on behalf of energy intensive industries and utilities. It owns a diversified fleet of 78 generating units located throughout the United States, totaling approximately 8,700 megawatts of generating capacity. The company delivers electricity and natural gas through the Baltimore Gas and Electric Company (BGE), its regulated utility in Central Maryland.