Dan, Danielle, Hillary

What is Geothermal energy  Geothermal energy is a form of energy that comes from the earths natural heat  It comes from radioactive decay and sunlight  It is efficient and inexpensive  However it is limited to the edges of the tectonic plates

advantages  The power is constant  It is very clean energy  The power is renewable  New technologies have made it more accessible to other areas of the world

Disadvantages  Geothermal energy has low heat so unless the exhaust can be directly used the heat left over is wasted  It is limited to areas around the tectonic plate and other geothermal hot spots  Wells drilled release co2 and other pollutants.

How do the plants work  Dry Steam Plants- these plants use geothermal steam to power turbines.  Flash Steam Plants- use pressurized water to flash into steam and turn turbines  Binary Cycle Plants- these are the newest plants that use a liquid with a boiling point lower than water and different pressures to flash steam and turn turbines

Heat uses  Most of geothermal heat is used in space heating.  A third of the energy is used for heating pools  The leftovers are used for agricultural uses

What are the top three countries using this energy  1-usa  2-Phillipines  3-indonesia