The plant's other reactor, Indian Point 3, remained running. Together, the two reactors supply about one-fourth of the power used in New York City and Westchester County.

Constellation Energy began shutting down its 825-MW Unit 1 at the Calvert Cliffs Nuclear Power Plant near Lusby, Md., on Sunday after a control rod unexpectedly dropped into the reactor’s core ...

A reactor at the Indian Point nuclear power plant, shown in May, was safely shut down Saturday after several control rods lost power. The incident at the suburban New York plant did not release ...

The operators of Calvert Cliffs nuclear power plant in southern Maryland shut down one of its two reactors Thursday after a control rod assembly malfunctioned during testing, federal safety ...

One of the Indian Point nuclear power plant’s reactors was shut down Saturday after several control rods lost power, the plant owner said, marking the latest in a series of mishaps at the ...