December 31, 1978:

Unit 2 of Metropolitan Edison Company’s nuclear generating plant at Three Mile Island (TMI) on the Susquehanna River in Middletown, Pennsylvania began commercial generation of electricity.
For a detailed narrative of the days surrounding the accident click here.

Additional Photos

These photographs are of the Three Mile Island Unit 1 under construction. The two units are very similar in design.


TMI-1 Under Construction

TMI-1 Under Construction

TMI-1 Under Construction