Inability to accurately predict temperature and permeability of the geothermal reservoir from the surface is a major cost and exploration risk for geothermal systems. While the majority of known geothermal resources across America have been identified, the USGS predicts that more than 30 gigawatts of geothermal energy potential – enough to power about 30 million homes – resides deep in the earth in "blind" geothermal systems, without any manifestation on the surface. Research undertaken by the Energy Department plumbs these depths to reduce cost and risk of geothermal development.

At the 2015 Geothermal Technologies Office Peer Review, thirty-three projects were presented for review. Click on the links below to see them.

Please note that formatting issues may be seen in some of the files due to animations and movies that were present in the original PowerPoint presentation prior to PDF conversion.

track 2: Hydrothermal Resource Confirmation