Geothermal energy doesn't use much electricity. The amount of electricity used depends on the type of geothermal power plant. For a binary cycle plant, it takes about 1 kWh of electricity to generate 12 kWh of thermal energy. For a steam plant, it takes about 2.5 kWh of electricity to generate 12 kWh of thermal energy. That means that for every unit of energy created by the geothermal plant, between 0.8 and 2 units of electricity are used. So geothermal is very efficient in terms of how much electricity it uses to create thermal energy.

It depends on the type of geothermal power plant. The most common type of geothermal power plant is a binary cycle power plant, which doesn't use any water for cooling and hence doesn't consume any extra electricity for that purpose. Some other types of geothermal power plants do use water for cooling, but the amount of electricity used for that purpose is typically quite small when compared to the total amount of electricity used by the plant. For example, a geothermal power plant in Iceland that uses water for cooling consumes about 2% of the total amount of electricity used in Iceland.