Geothermal Power

What is Geothermal Energy? Geothermal Energy is heat that comes from within the earth. The heat in the center of the earth is continuously flowing outward.

Geothermal Energy in the US Alaska Utah Nevada California Idaho New Mexico Hawaii From above clockwise: California(1), Hawaii(4) & Alaska(2)

How is Geothermal Energy Recovered Magma carries heat from the center of the earth. Heat is transferred to underground reservoirs in three forms –Dry Steam –Wet steam –Hot water Reservoirs close to the surface can be drilled into.

Uses of Geothermal Power In ancient times the hot mineral springs have been used for bathing, cooking and heating. They also felt that mineral rich waters was a natural way to heal.

What will it heat? Electrical Replaces coal Reduces pollution Saves non- renewable resources

What can bring it to Michigan? It already exists in Michigan Many people can get it in their home Niles Michigan

Likeliness of becoming mainstream -vast potential supply (renewable) -22 countries, 1% -U.S.A, 38% -The Geysers: 26 plants, 1.3 million  Heat withdrawn 80X faster -research: hot-dry rock zones -Cost $$$ -U.S Geothermal Energy Association: 5% of needs

Advantages vs. Non-renewable Cleaner Helps conserve non- renewable sources Easy on the Land Reliable Saves money Helps developing countries grow

Pros and Cons (challenges) Pros: -High efficiency -Moderate net energy -Lower CO2 -Low cost -Low land use & disturbance -Modern env. impact Cons: -Scarcity of suitable sites -Depletion -CO2 emissions -Air pollution -Noise and odor (H2S)

Bibliography ble/geothermal.html#Electricityhttp:// ble/geothermal.html#Electricity zone/usa/california/map.htm edge.com/pros_and_cons_of_geothermal_energy.htmlhttp:// edge.com/pros_and_cons_of_geothermal_energy.html