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How Direct Use Work
Direct Sources function by sending water down
a well to be heated by the Earth’s warmth.
Then a heat pump is used to take the heat from
the underground water to the substance that
heats the house.
Then after the water it is cooled is injected
back into the Earth.
Generation of Electricity
Geothermal Heat Pumps
Low maintenance charge
produces 4 times the energy that
Can be online 90-100% of the time
Less gaseous emissions
Good Alternative to Fossil Fuels
Electricity generated by
geothermal plants saves 83.3
million barrels of fuel each year
Direct use of geothermal energy
prevents 103.6 million barrels of
fuel each year
CARBON DIOXIDE EMISSIONS
per unit of energy produced
Comparison of CO2 emissions between conventional energy systems
and geothermal plants to generate electricity.
Comparison of harmful emissions between a conventional oil fired
central heating system and water/water based heat pumps
• As of 2010 geothermal energy is being used in 24
• These countries currently have geothermal power
plants with a total capacity of 10.7 GW
• But 88% of it is generated in just seven countries: the
United States, the Philippines, Indonesia, Mexico,
Italy, New Zealand, and Iceland