Using heat generated under the Earth’s surface, geothermal technology is a major source of renewable energy in certain parts of the world such as Iceland, the Philippines, and parts of California.
When available, geothermal energy is capable of producing relatively large quantities of electricity with virtually no emissions.
According to the EIA, geothermal technology usually requires underground temperatures of at least 150 Celsius. The vast majority of such underground temperatures in the United States are located west of the Mississippi River.
Capacity Factor: 87%
Source: EIA
