Xcel Energy is planning for several power plant retirements and contract expirations in the mid-2020s.
NextEra pledged to continue making infrastructure investments at both Gulf Power and Florida City Gas.
Current CFO Art P. Beattie will retire.
Construction of the approximately 280-acre project began in October 2017.
Southern had secured 300 acres of land at the industrial park and planned to spend more than $250 million.
Franklin Energy says the shorter contract doesn't offer the stability needed to make the proposed project financially viable.
Regulators have reached a settlement with Mississippi Power Co. on how much customers should pay for the Kemper County facility.
SCE incorporated a dramatic increase of carbon-free electrical generation from 40 percent today to 80 percent by 2030.
Renewable Energy Systems Americas, the previous owner of the site, will complete construction by the third quarter of 2018.
The two flexible gas power plant projects could be as large as 450 MW each.