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Geothermal Data

These datasets detail the geothermal resource available in the United States.

Geographic Coordinate System Name: GCS_North_American_1983

Coverage File Last Updated Metadata
Geothermal Zip 5.4 MB 03/05/2009 geothermal.xml

This dataset is a qualitative assessment of geothermal potential for the U.S. using enhanced geothermal systems (EGS) based on the levelized cost of electricity, with Class 1 being most favorable and Class 5 being least favorable. This dataset does not include shallow EGS resources located near hydrothermal sites or the U.S. Geological Survey assessment of undiscovered hydrothermal resources. The source data for deep EGS temperature at depth from 3 km to 10 km were provided by the Southern Methodist University Geothermal Laboratory, and the analyses for regions with temperatures ≥150°C were performed by NREL. Class 999 regions have temperatures less than 150°C at a 10-km depth and were not assessed for deep EGS potential. Temperature-at-depth data for deep EGS in Alaska and Hawaii are not available.

Texas Geopressured Geothermal Resource Estimate

Geopressured geothermal reservoirs are characterized by high temperatures and high pressures with correspondingly large quantities of dissolved methane. Due to these characteristics, the reservoirs provide two sources of energy: chemical energy from the recovered methane and thermal energy from the recovered fluid at temperatures high enough to operate a binary power plant for electricity production. Formations with the greatest potential for recoverable energy are located in the Gulf Coast region of Texas and Louisiana, where significantly overpressured and hot formations are abundant. These data files were generated to develop the thermal and methane resource estimate for five formations in Texas: the upper and lower Claiborne, the lower Wilcox, the lower Frio, and the Vicksburg-Jackson area.

Recoverable Resource Estimate of Identified Onshore Geopressured Geothermal Energy in Texas and Louisiana provides additional information on the resource estimate.

These datasets are designed to be used in GIS software applications.

Geographic Coordinate System Name: NAD_1983_Albers
Coverage File Last Updated Metadata
Geopressured Formation Properties Zip 5.4 MB 09/06/2012 Geopressured Formation Properties.htm

Geopressured formation properties include the calculated shale thickness, sand thickness, and depth to midpoint for the five formations.

Geographic Coordinate System Name: USA_Contiguous_Albers_Equal_Area_Conic
Coverage File Last Updated Metadata
Geopressured Formation Temperature (Zip .50 MB ) 09/06/2012 Geopressured Formation Temperatures.htm

The geopressured formation temperature file includes temperature at the midpoint depth for the five formations.