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1. 24 countries around the world use geothermal energy.
2. Geothermal energy is the main source of energy in Iceland.
3. In the U.S., nearly a million residential geothermal heat pumps have been installed.
4. In some areas of Iceland, they use geothermal heat pumps under streets and sidewalks to melt the ice.
5. The first ever geothermal power plant was set up in Italy in 1904 and is still used to this day.

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Cabarrus county mainly uses nuclear energy as of 2017.