Renewable Energy

How do geothermal power plants create electricity?
Answered by Science Channel
  • Science Channel

    Science Channel

  1. There are three main types of geothermal power plants. Dry steam plants pipe hot steam directly from geothermal reservoirs into generators at the plants. The steam powers a turbine, which generates the electricity.

    Flash steam power plants use underground water brought up through a well. Steam from the water powers the turbines. As the steam condenses, it returns to the ground as water.

    Binary cycle plants take semi-warm geothermal water through a heat exchanger. The heat from the water transfers to a liquid in the plant, usually one that boils at a lower temperature than water. The steam from this secondary fluid powers the turbines.

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