How can groundwater sustain the generation of electricity in a geothermal power plant

The term itself was coined in the 1840s, in England, but the movement had been around since the late 18th century,

They work by piping hot steam from underground reservoirs directly into turbines from geothermal reservoirs, which power the generators to provide electricity. After powering the turbines, the steam condenses into water and is piped back into the earth via the injection well.