Geothermal energy is energy from the heat of the earth. It has been used for thousands of years in some countries for hot water, cooking and heating. It can also generate electricity using steam produced from heat found beneath the surface of the earth.
Geothermal technology makes use of specific types of underground rock formations to generate electricity. Known to geologists as Hot Dry Rocks or HDRs, a well is drilled to a depth of up to 5 km, and water is then pumped down into the rocks. The super-heated water is then pumped to the surface and is used in turbines to generate electricity.
Geothermal is a carbon negative technology, and whilst only one Geothermal Power station is in operation in Australia at the moment, several more are under consideration.
Geothermal power plants, like wind and solar power plants, do not have to burn fuels to manufacture steam to turn the turbines. Generating electricity with geothermal energy helps to conserve nonrenewable fossil fuels, and by decreasing the use of these fuels, we reduce emissions that harm our atmosphere. There is no smoky air around geothermal power plants — in fact some are built in the middle of farm crops and forests, and share land with cattle and local wildlife.