Start exploring U.S. geothermal resources with an easy-to-use map by selecting dataset layers that are NGDS compatible.
These maps show existing and developing geothermal power plants, geothermal resource potential estimates, and other information related to geothermal power. They are updated as information becomes available, but may not represent all available geothermal data.
The geothermal resource potential map (JPG 1.6 MB) for the United States shows locations of identified hydrothermal sites and favorability of deep enhanced geothermal systems (EGS). "Hydrothermal" refers to naturally-occurring geothermal resources used by conventional geothermal power projects commercially available and widely deployed today, while "Deep EGS" refers to geothermal heat that require technologies that are currently being developed and demonstrated to recover it. The map does not include shallow EGS resources located near hydrothermal sites or U.S. Geological Survey (USGS) assessment of undiscovered hydrothermal resources. The map was created by NREL using data provided by the Southern Methodist University Geothermal Laboratory and NREL analyses for regions with temperatures equal to or greater than 150°C. Source data for identified hydrothermal sites is from National Geothermal Resources Fact Sheet. (Temperature-at-depth data for deep EGS in Alaska and Hawaii not available.)
This geothermal map (JPG .73 MB) shows current and planned power generation capacity by state. Data are from the Geothermal Energy Association (GEA) (as of April 2014). The numbers for "planned" generation include projects in Phases 1-4 of development and unconfirmed projects. Total installed capacity is 3,442 MW, and total planned capacity is 978 MW.
Operating and Developing Power Plants
Developing geothermal projects (JPG .76 MB) information aggregated from lists of geothermal projects under development obtained from the Geothermal Energy Association 2013 Annual US Geothermal Power Production and Development Report and SNL Financial LC. Development geothermal project status and location verified and corrected when possible independently by NREL. When available, BLM LR2000 Lease information was compared with other data sources to verify developing project location. The developing status that is stated for each location is an NREL-defined status which is based on the terminology used by both 2013 Annual US Geothermal Power Production and Development Report and SNL Financial LC. Because of the uncertainty inherent in data surrounding projects under development, NREL cannot and does not guarantee the accuracy of this data.
For more geothermal information, access U.S. Department of Energy's Geothermal Technologies Program, U.S. Geological Survey's Energy Resource Program, National Geothermal Data System (NGDS), or Southern Methodist University Geothermal Laboratory.
For Geographic Information System (GIS) geothermal resource data, access the Data Resources page.
For interactive maps and tools for viewing maps and data, access the Data Visualization and Tools page.
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