The Three Mile Island nuclear power plant in Pennsylvania will close in two years, according to owner Exelon.

The power plant was the site of a 1979 partial meltdown that chilled nuclear plant development for years afterward.

Illinois-based utility giant Exelon, the largest nuclear utility in the country, said the decision was made Monday after years of revenue losses.

The nuclear power industry is struggling to remain competitive in an electricity market dominated by low-cost natural gas. The market situation has made it difficult for nuclear power operators to remain afloat.

The Three Mile Island decision adds to a growing number of announcements from companies looking to close nuclear power plants in the coming years. The industry is looking to the Trump administration for assistance in recognizing the problem and supporting market mechanisms that can help the nation's aging nuclear fleet survive.