But going from heat to electrical or mechanical energy involves considerable losses;
typical steam turbine generators run at about 33 % conversion efficiency — i.e. only 1/3 of the thermal energy gets converted to electricity.
Not exact matches
But Siemens, a supplier, gave some examples for a
typical combined - cycle natural gas power plant, one that burns the fuel in a gas
turbine to drive one generator, then makes
steam from the exhaust to drive a second generator.
The light heats water in a boiler at the top of the tower, creating
steam, which is used to run a conventional
steam turbine like those in a
typical fossil - fired power plant.
CSP plants are more like
typical power plants and require incorporating large
steam turbines and storage tanks, plus a large, flat area for the solar array.
Variation across gas plants is less, though still substantial, with the best combined - cycle plants having nearly twice the efficiency (and hence roughly half the damages) of
typical steam or centralized
turbine plants, and lower damages even than the cleanest coal - fired plants.