PJM Hurricane Sandy Update

October 30, 2012, 5:00 p.m.

  • As of 5 p.m., Oct. 30, more than 4.6 million customers were without electric service in the PJM region because of the storm.
  • As the storm moved west, it caused additional damage to the electric power system.
  • PJM member companies continue making progress restoring power to customers in the east (New Jersey, Delaware, eastern Pennsylvania, Maryland, D.C., Virginia). However, at the same time, the storm is causing customers to lose electric service further west (western Pennsylvania, West Virginia, Ohio).
  • PJM is working closely with transmission and generation owners to coordinate transmission system restoration efforts.
  • With the winds decreasing and utility crews continuing to restore service, the number of customers without electricity is expected to level off and diminish.
  • Overall, the high-voltage transmission system remains in good shape. There is enough generation available in the region to cover the loss of those generating stations that are out of service because of the storm. PJM had scheduled additional generating units to be available to run to replace generation forced to shut down because of the storm.

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* A hurricane’s greatest effects on the electric power system typically are on the distribution systems rather than the high-voltage transmission system. High winds may blow down trees and branches that pull down the wires serving neighborhood homes and businesses.