Hot steam is piped directly from geothermal reservoirs into generators in the power plant. The steam spins turbines, which generate electricity. Second, flash steam plants. Water that is between 300 and 700 degrees Fahrenheit or 148 and 371 degrees Celsius is brought up through a well. Some of the water turns to steam, which drives the turbines. When the steam cools it condenses back into water and is returned to the ground. And the last one, Binary cycle plants.