The diagram shows five stages in the process of producing electricity at a geothermal power plant. 

 

In overview, the plant has five main divisions that correspond to the five stages of production, namely: cold water storage, injection well, production well, condenser, and lastly, a turbine/generator. These five parts will now be briefly described.

 

First, cold water is collected at a storage facility, possibly a dam or a tank, on the surface of the earth near the other above-ground components of the plant. 

 

In the second stage, water from this reservoir is pumped a distance of 4.5 km below the earth’s surface via the injection well. 

 

After leaving the injection well, the water is naturally heated as it passes through the geothermal zone (consisting of hot rocks) until it reaches the third major component of the plant, the production well, whose function is to pump the heated water back up to the surface.

 

The fourth component of the plant is the condenser, which converts the hot water into steam, which then passes through a tube to the actual electricity generation stage.

 

This final step involves two machines, namely, a turbine and generator. Steam from the condenser powers the turbine, which then powers the generator, thereby producing electricity which is then distributed across the grid via pylons.