Constellation Energy Projects & Services Group to Construct Large-Scale Solar Power System for General Motors

6,400 UNI-SOLAR(R) Panels to Provide Half of Energy at Fontana, Calif. Warehouse

BALTIMORE, Sept. 14 -- Constellation Energy today announced that its subsidiary, Constellation Energy Projects & Services Group (CEPS), has signed an agreement with General Motors Corporation to construct a solar power system that will generate approximately 870 kw of power and supply nearly half of the power requirements at GM's 300,000-square-foot Service and Parts Operations warehouse in Fontana, Calif.

Constellation Energy will own and operate the rooftop system and provide power to the GM facility under a 25-year power purchase agreement.

The photovoltaic solar installation, one of the largest of its kind for a corporate customer, will feature 6,400 UNI-SOLAR(R) solar panels. GM estimates the project will reduce greenhouse gas emissions by 355 metric tons annually and reduce electricity costs by approximately 10 percent.

"At General Motors we understand that good environmental decisions are good business decisions and solar energy is a perfect example of this," said Elizabeth A. Lowery, GM vice president, Environment, Energy and Safety Policy. "The new solar arrays on our rooftops are reducing our energy costs and carbon footprint, while providing green energy to the community."

"These projects represent cost-effective and turn-key energy management solutions because Constellation constructs, owns and operates the on-site renewable systems and customers enjoy stable, long-term energy prices," said Gregory Jarosinski, president of Constellation Energy Projects & Services. "Environmental leaders like GM recognize that with today's technology and the expertise of a skilled energy partner, sustainable solutions make sense economically and environmentally."

In August, Constellation Energy announced the completion of its first solar photovoltaic system in partnership with leading aluminum manufacturer Alcoa and DEERS, owner of the patent pending solar rooftop attachment design. The new system -- a 588,000-watt, roof-mounted photovoltaic solar power system -- recently began operation at the Alcoa Building and Construction Systems' Kawneer manufacturing facility in Visalia, Calif. Power is generated by more than 4,300 UNI-SOLAR(R) solar panels.

Constellation Energy Projects & Services Group (http://www.ceprojects.com/) is a full-service energy company, providing customized energy solutions to government, institutional and large commercial and industrial customers nationwide. The company's large array of products and services-including utility infrastructure outsourcing, energy consulting and energy projects-are all designed to increase energy efficiency, reliability, cost effectiveness and improve the customer's bottom line.

Constellation Energy (http://www.constellation.com/), 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 more than 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.