Baltimore Gas and Electric Company Declares Quarterly Dividend

Baltimore Gas and Electric Company (BGE), a subsidiary of Constellation Energy (NYSE:CEG), announced today that it declared quarterly dividends at the specified rate for all of its outstanding preferred stock, payable Jan. 4, 2010, to shareholders of record at the close of business on Dec. 10, 2009.

BGE, www.bge.com, headquartered in Baltimore, is Maryland’s largest gas and electric utility, delivering power to more than 1.2 million electric customers and more than 640,000 natural gas customers in Central Maryland. The company’s approximately 3,000 employees are committed to the safe and reliable delivery of gas and electricity, as well as enhanced energy management, conservation, environmental stewardship and community assistance. BGE is a wholly owned subsidiary of Constellation Energy, www.constellation.com, a FORTUNE 500 company also headquartered in Baltimore, with subsidiaries that generate, sell and provide other energy-related services to customers throughout North America.