Progress Energy Florida, a subsidiary of Duke Energy, will retire the Crystal River nuclear plant in Citrus County, Fla. The company is reviewing alternatives to replace the power produced by the unit, including the potential construction of a new natural gas-fueled plant. The nuclear unit, which began operating in 1977, was shut down in the fall of 2009 for refueling and replacement of its steam generators when a delamination was discovered in the outer layer of the containment building’s concrete wall.
