Geothermal Power

• Geothermal power - energy in underground thermal energy stores
• This is possible in volcanic areas or where hot rocks lie quite near to the surface
• The source of much of the geothermal energy is the slow decay of various radioactive elements, including uranium, deep inside the Earth
• This is actually brilliant free energy that's reliable and does very little damage to the environment
• The main drawbacks with geothermal power are that there aren't very many suitable locations for power plants, and that the cost of building a power plant is often high compared to the amount of energy it produces