1. Advantages and disadvantages of geothermal energy
JOLLIFFE Olivia CHANGEUR Paul

2. Contents
How it works
Advantages
Disadvantages
Statistics
Sources

3. How it works

4. Advantages
Considered environmentally friendly and does not cause significant amounts of pollution.
Geothermal reservoirs are naturally replenished and therefore renewable
Massive potential – upper estimates show a worldwide potential of 2 terawatts (TW).
Great for heating and cooling – even small households can benefit.
Harnessing geothermal energy does not involve any fuels, which means less cost fluctuations and stable electricity prices.
Small footprint on land – can be built partially underground.
Geothermal energy is available everywhere

5. Disadvantages
Minor environmental issues associated with geothermal power.
Geothermal power plants can, in extreme cases cause earthquakes.
Heavy upfront costs associated with both geothermal power plants and geothermal heating/cooling systems.
Very location specific (most resources are simply not cost-competitive).
Only sustainable (renewable) if the reservoirs are properly managed.

6. Statistics 90% of geothermal energy produced is in the USA
18% of energy consumption in Iceland comes from geothermal energy
almost 100% efficient (the only energy lost is from turbine friction)
only 1% CO2 emissions
China consume W of geothermal energy every month
Romania has the 3rd highest potential for geothermal energy, based on existing wells

7. Sources Notes taken in class
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