Seven counties in Florida, Georgia and North Carolina are in contention to be chosen by National Solar Power, a utility solar company based in Melbourne, Florida, as the location for the construction of the world's largest solar farm.

Gadsden, Hardee, Osceola and Suwannee Counties in Florida, Sumter and Tatnall Counties in Georgia and Guilford County in North Carolina were selected as possible locations to house a 400-megawatt solar project. This would be the world's largest photovoltaic power plant, according to National Solar Power.

The project would be made up of 20 related 200-acre solar farms, NSP said. Each would generate 20-megawatts of energy. The current largest solar plant is an 80-megawatt solar plant in Ontario, Canada.

This project would be capable of generating enough energy to power 32,000 homes, NSP said.

Work recently started on what would be the world's largest solar plant, a 1,000-megawatt initiative, called the Blythe Solar Power Project located in California. That project, expected to be finished in 2013, would provide energy to eastern Riverside County, according to UPI.com.