By Michael Dabaie

Duke Energy Corp.'s Duke Energy Florida said it filed the locations of three new solar power plants.

Once operational, the 74.5-megawatt Duette Solar Power Plant facility will consist of about 227,000 single-axis tracking solar panels. Once completed, the estimated cost would be 42 cents per 1,000 kilowatt-hours for a typical residential customer.

The Charlie Creek Solar Power Plant will be a 74.9-MW facility will and consist of about 235,000 single-axis tracking solar panels. The estimated cost for residential consumers would be 39 cents per 1,000 kWh.

The 74.9-megawatt Archer Solar Power Plant will consist of approximately 220,000 single-axis tracking solar panels, and the estimated cost would be 32 cents per 1,000 kWh.

All three solar power plants will be owned, operated and maintained by Duke and are expected to be finished in late 2021, the company said.

"The Archer, Duette and Charlie Creek solar power plants will complete Duke Energy Florida's commitment to customers to provide 700 MW of clean, green energy by 2022," said Catherine Stempien, Duke Energy Florida state president.

Write to Michael Dabaie at michael.dabaie@wsj.com