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Expect the Extraordinary.


Exelon—Calvert Cliffs Nuclear Generating Station

APTIM is the maintenance and modification provider to Exelon's Calvert Cliffs Nuclear Generating Station, specializing in outage work scope, online maintenance, and capital project execution. We also provide supplemental support personnel at this site.

Contact Us

1780 Hughes Landing Blvd.
Suite 1000
The Woodlands, TX 77380

833 86 APTIM
833 862 7846