Geothermal Basics
![Photo of The Geysers.](https://webarchive.library.unt.edu/eot2008/20080921154514im_/http://www1.eere.energy.gov/geothermal/images/photo_00060.jpg)
Several geothermal power plants at The Geysers.
In this section, you can:
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Learn the basics about geothermal energy and the three technology categories, geothermal heat pumps, direct-use applications, and power plants.
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Discover answers to your questions in the FAQs section.
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Learn about the history of geothermal development.
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Look up a definition for a geothermal term in the glossary.