U.S. Department of Energy - Energy Efficiency and Renewable Energy

Geothermal Technologies Office

Technical Roadmaps for Public Comment

Two technical roadmaps for leading geothermal technology sectors are open for review by the geothermal community and posted below for your feedback.

Exploration Technical Roadmap

A Roadmap for Strategic Development of Geothermal Exploration Technologies

Characterizing productive geothermal systems is challenging yet critical to identify and develop an estimated 30 gigawatts electric (GWe) of undiscovered hydrothermal resources in the western U.S. This paper, undertaken by the U.S. Department of Energy's Geothermal Technologies Office (GTO), summarizes needs and technical pathways that target the key geothermal signatures of temperature, permeability, and fluid content, and develops the time evolution of these pathways, tying in past and current GTO exploration R&D projects. Beginning on a five-year timescale and projecting out to 2030, the paper assesses technologies that could accelerate the confirmation of 30 GWe. The resulting structure forms the basis for a Geothermal Exploration Technologies Roadmap, a strategic development plan to help guide GTO R&D investments that will lower the risk and cost of geothermal prospect identification.  The GTO invites you to download this roadmap using the link above and email your comments.

Enhanced Geothermal Systems Technical Roadmap

A Technology Roadmap for Strategic Development of Enhanced Geothermal Systems

Realization of Enhanced Geothermal Systems (EGS) development would make geothermal a significant contender in the renewable energy portfolio, on the order of 100+ GWe in the U.S. alone. While up to 90% of the geothermal power resource in the U.S. is thought to reside in EGS, hurdles to commercial development still remain. The U.S. Department of Energy's Geothermal Technologies Office began in 2011 to outline opportunities for advancing EGS technologies on five- to 20-year timescales, with community input on the underlying technology needs that will guide research and ultimately determine commercial success for EGS. The attached report traces the Department of Energy's research investments, past and present, and ties them to these technology needs, forming the basis for an EGS Technology Roadmap to help guide future DOE research. The GTO invites you to download this roadmap using the link above and email your comments.