[2] On August 1, 2013, Duke Energy terminated the engineering, procurement, and construction (EPC) agreement for the Levy nuclear project, as part of a settlement with Florida's consumer advocates.

The site's proximity to the company's existing Crystal River 3 Nuclear Power Plant was expected to provide opportunities for efficiencies in shared support functions at both facilities.

[9][10] On January 5, 2009, PEF awarded an engineering, procurement, and construction (EPC) contract to Westinghouse and The Shaw Group's nuclear division to build the two reactors for $7.65 billion.

[11][12][13] In May, after the NRC denied permission to begin excavation work on the site to prepare for construction prior to issuing the COL, Progress Energy announced that commercial operation of the two new reactors had been pushed back "a minimum of 20 months."

[14] On August 11, 2009, Florida governor Charlie Crist and his cabinet unanimously adopted the recommendation of the state Department of Environmental Protection, and approved the plant's Site Certification Application (SCA).

The approval included a requirement that Progress shut down coal-fired electrical generating units 1 & 2 at its nearby Crystal River Energy Complex by the end of 2020, assuming the timely licensing and construction of the Levy nuclear power plant.

[18] On October 20, 2016, the Nuclear Regulatory Commission cleared the way for the agencies Office of New Reactors to issue two (2) Combined Licenses (COLs) for the Levy County site.