TECO Energy's main subsidiary, Tampa Electric, is planning to expand the Polk Power Station to serve future electricity needs. Plans call for converting the four natural gas-fired combustion turbines into a more efficient combined-cycle unit. If we get all the necessary approvals, the $700 million project is scheduled to be running by early 2017.
The circumference of the Earth is 24,902 miles (40,075.16 km). Over the poles it is more precisely 40,008 km or 24,860 statute miles. The actual unit of measure used by Eratosthenes was the stadion.
Although they knew it was a sphere, they didn't know how big the sphere was. The philosopher Plato (400. ) declared the earth's circumference to be 64,412 kilometers (40,000 miles). Some 150 years later, the mathematician Archimedes estimated it to be 48,309 kilometers (30,000 miles).