February 16, 2015

 Operators removed Calvert Cliffs Unit 2 from service early this morning for a planned refueling outage.  

 LUSBY, MD - Operators removed Calvert Cliffs Unit 2 from service early this morning for a planned refueling outage. While the unit is offline, technicians will replace nearly one-third of the reactor's fuel and perform thousands of tests and preventive maintenance activities to keep the unit running safely and effectively for another two years. Most of this work cannot be performed while the unit is online.

"This year's refueling outage represents Exelon's continued investment in the future of safe and reliable operations at Calvert Cliffs," said Site Vice President George Gellrich. "In addition to the thousands of safety inspections and preventative maintenance tasks underway this year, we are upgrading a host of key components that will help the station run more efficiently and effectively for many years to come."

Calvert's bi-annual Unit 2 refueling outage will bring an additional 1,500 highly trained technical workers to Southern Maryland. Many come back year after year to patronize area hotels, restaurants and businesses. The influx of outage workers helps support local businesses at a time when tourism is traditionally down.

Calvert Cliffs is located on the western shore of the Chesapeake Bay in Calvert County and is Maryland's only nuclear energy facility.  The station is home to two pressurized water reactors capable of generating 1,768 megawatts combined. Units 1 and 2 began commercial operation in 1975 and 1977, respectively.

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About Exelon

Exelon Corporation (NYSE: EXC) is the nation's leading competitive energy provider, with 2013 revenues of approximately $24.9 billion. Headquartered in Chicago, Exelon does business in 48 states, the District of Columbia and Canada. Exelon is one of the largest competitive U.S. power generators, with approximately 35,000 megawatts of owned capacity comprising one of the nation's cleanest and lowest-cost power generation fleets. The company's Constellation business unit provides energy products and services to approximately 100,000 business and public sector customers and more than one million residential customers. Exelon's utilities deliver electricity and natural gas to more than 7.8 million customers in central Maryland (BGE), northern Illinois (ComEd) and southeastern Pennsylvania (PECO).

Follow Exelon on Twitter @Exelon.

Contacts
Lacey Dean Exelon Nuclear Communications
717.456.4818
717.779.4714 (Cell)
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