Geothermal Energy

Geothermal energy is the heat that comes from the sub-surface of the earth. It is contained in the rocks and fluids beneath the earth's crust that can be utilized for heating and electricity generation. The heat within the earth comes from the original formation of the planet and from radioactive decay of materials.

How Geothermal Energy Works

Geothermal energy is harnessed by drilling wells into the earth to access the hot water and steam that lie below the surface. The steam or hot water is brought to the surface and used to produce electricity or for direct heating. There are three main types of geothermal power plants: dry steam, flash steam, and binary cycle.

Advantages of Geothermal Energy

• Renewable and sustainable
• Low greenhouse gas emissions
• Low operating costs once a geothermal power plant is set up
• Can be used for heating and electricity generation

Study Guide

When studying geothermal energy, it's important to understand the following key points:

1. Definition of geothermal energy and its sources
2. How geothermal energy is harnessed
3. Types of geothermal power plants
4. Advantages of using geothermal energy
5. Environmental impact and sustainability of geothermal energy

It's also beneficial to explore case studies of successful geothermal energy projects around the world and to understand the potential for future growth in this sector.