An update from the US Energy Information Administration (source) summarized, which states ranked and contribute to the United States leading the world in the amount of electricity generated with geothermal energy. Geothermal electricity generation requires water or steam at high temperatures (300° to 700°F). Geothermal power plants are generally built where geothermal reservoirs are located, within a mile or two of the earth’s surface. In 2016, U.S. geothermal power plants produced about 17.4 billion kilowatt hours (kWh), or 0.4% of total U.S. electricity generation. In 2016, seven states had geothermal power plants.
Share of U.S. geothermal electricity produced by each state, 2016:
1) California = 72%
2) Nevada = 22%
3) Utah = 3%
4) Hawaii = 1%
5) Oregon = 1%
6) Idaho = <1%
7) New Mexico = <1%
Our friends at ThinkGeoEnergy also shared this in an article.