Who:    Jonathan W. Thayer, senior vice president and chief financial officer, Constellation Energy 
 What:   44(th) EEI Financial Conference                                                             
 When:   Thayer will present at 9:45 a.m. (EST) on Tuesday, Nov. 3, 2009                             


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A live audio webcast and presentation slides will be available on the Investor Relations page of Constellation Energy's Web site, www.constellation.com. The webcast will be archived and available for replay for 60 days.

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 9,100 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.

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