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Purchase of ONEOK Energy Marketing Company Adds 26,000 Customers, Expands Constellation’s National Footprint to 46 States

Exelon and Constellation today announced the developer, site and design firms for their new headquarters building in downtown Baltimore, contingent on the completion of the companies’ proposed merger.

Exelon today announced the Finance executives reporting to Jonathan W. (Jack) Thayer, who has previously been named executive vice president and chief financial officer of the combined company, upon close of Exelon’s planned merger with Constellation.

Operators at Byron Generating Station terminated the Unusual Event at 8 p.m. Tuesday, following the return of power to Unit 2.

Byron Generating Station’s Unit 2 remains offline and under an Unusual Event classification. The plant is in a safe and stable condition with no impact to public safety.

BYRON, Ill. (January 30, 2012) – Byron Station’s Unit 2 remained off line this evening due the loss of offsite power. The plant is in a safe and stable condition with no impact to public safety.

Operators at Byron Generating Station declared an Unusual Event at 10:18 a.m. CT, due to the loss of offsite power and Unit 2 coming offline.

PECO and the Exelon Foundation, the independent, non-profit philanthropic organization funded by PECO parent company Exelon, have sponsored an exhibition of works by the influential African-American artist Henry Ossawa Tanner.

Ricl Libra and Mark Newcomer named to leadership roles at Three Mile Island

Exelon Corporation (NYSE: EXC) announced fourth quarter and full year 2011 consolidated earnings.

The Board of Directors of Exelon Corporation declared dividends for the second quarter that are contingent on the effective date of the pending merger with Constellation.

Exelon Corporation (NYSE: EXC) and Constellation Energy (NYSE: CEG) today announced that they have reached an agreement with Electricite de France (EDF) under which EDF will withdraw its opposition to the Exelon-Constellation merger.

$233 million dedicated to system upgrades and smart grid technologies in 2012; smart grid “Test Bed” to spur innovation in new energy economy

Ninety megawatt wind project is the first commercial wind project developed by Exelon Wind

Exelon Nuclear’s Limerick Generating Station Unit 1 resumed producing electricity today following a scheduled maintenance outage after successfully replacing a valve on the plant’s steam piping system.

Operators at Exelon Nuclear's Limerick Generating Station shut down the Unit 1 plant today for a scheduled maintenance outage to allow workers to replace a valve on the plant's steam piping system.

Operators at Exelon Nuclear's Limerick Generating Station shut down the Unit 1 plant today for a scheduled maintenance outage to allow workers to replace a valve on the plant's steam piping system.

Value of merger package increased from $250 million to more than $1 billion

Ruling comes on the heels of Exelon and Constellation’s merger settlement with the State of Maryland, City of Baltimore and other key parties

Huston, Nigro, Duckworth and Quinn to comprise senior team, reporting to Constellation president and CEO