KENNETT SQUARE, PA (May 10, 2010) - Exelon Power will retire two suburban Philadelphia electric generating units earlier than previously announced, as a result of a revised analysis by PJM Interconnection, the regional transmission organization.
PJM informed Exelon Power that transmission system upgrades, necessary to allow two aging fossil-fuel generating units to retire, can be completed sooner than their original analysis indicated.
PJM has determined that Cromby Generating Station Unit 2 is needed to remain in operation until Dec. 31, 2011, and Eddystone Generating Station Unit 2 is needed to remain in operation until Dec. 31, 2012, to support transmission system reliability.
Previously, PJM indicated that it needed Cromby Generating Station Unit 2 to remain in operation through May 31, 2012, and Eddystone Generating Station Unit 2 through Dec. 31, 2013.
While it originally announced on Dec. 2, 2009 that the two units would retire for economic reasons, Exelon Power has agreed to extend their operation through the timeframe defined by PJM for system reliability reasons.