Geothermal energy is thermal energy generated and stored in the Earth. It is harnessed by accessing hot water or steam underground to power geothermal power plants and directly use the earth's heat for heating systems, agriculture and other applications. The first geothermal power plants were built in Italy and the United States in the early 20th century. Geothermal energy has significant advantages as it is renewable, causes little pollution and has low operating costs once infrastructure is established, though suitable locations must be found and some risks monitored.

2.  GEO means Earth.
 THERMAL means Energy.
 Geothermal Energy is thermal energy generated and stored in the Earth.

3.  Geothermal Powerplants get energy from hot Lava inside the Earth. The
heat is used to boil water and get vapors.

6.  The first geothermal energy plant was invented in 1904 by Prince Piero Ginori Conti of Italy.
 The first modern geothermal power plants were also built in Lardello, Italy.
 The first geothermal power plants in the U.S. were built in 1962 at The Geysers dry steam
field, in northern California.

7. Hot springs.
Green house heating.
Food dehydration plants.
Agricultural.
 Crop drying.
 Milk pasteurization.
Heating homes.

8.  Used for bathing in Paleolithic times.
 Ancient Romans used it as a central heating system
for bathing and heating homes and floors.
 1892: America`s first district heating system was
put into place.

9. It is renewable.
It doesn’t cause pollution.
There is no fire hazard.

10. Power stations does not requier much space.
No fuel is used.
Once the geothermal power station was built the is almost
free.
It may need a little energy to run a pump, but this can be
taken from the energy being generated.

11. Suitable place is required.
Some times the rocks run out of steam.
Hazardous gases and minerals may come up from
underground, and can be difficult to safely dispose of.

12.  Success Story – Geothermal Power Generation in Kenya.

13.  The International Geothermal Association (IGA) has reported that 10,715 megawatts(MW) of geothermal power in 24
countries is online, which is expected to generate 67,246 GWh of electricity in 2010. This represents a 20% increase in online
capacity since 2005. IGA projects growth to 18,500 MW by 2015, due to the projects presently under consideration, often in
areas previously assumed to have little exploitable resource.

14. Overall, geothermal appears to be a sound solution to
energy needs.
Geothermal energy has the ability to expand.
Few environmental effects.
Very cost efficient.
Geothermal is RENEWABLE.

15. Geothermal education society.
Wikepedia.org.
www.geoheat.oit.edu.
http://www.darvill.clara.net/altenerg/fossil.htm.
http://www.umich.edu/gs265/society/fossilfuels.htm.
www.worldorgenergy.org.

16. Thank you
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