Geothermal Technologies Office Contacts

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This page lists key Geothermal Technologies Office (GTO) staff, their assignments, and contact information. GTO is part of the Office of Energy Efficiency and Renewable Energy (EERE) at the U.S. Department of Energy (DOE). For general inquiries, please use the general contact information below. To provide feedback on this site or report technical issues, contact our Webmaster.

General Contact Information

U.S. Department of Energy
Geothermal Technologies Office
1000 Independence Avenue, SW
Room 5E-066
Washington, DC 20585
Nearest Metro stop: Smithsonian (blue/orange line)
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Media Inquiries

For media inquiries, please email the EERE communications team at

Office Director

Dr. Susan Hamm, Director






Program Managers and Supervisors

Matthew Kalmuk, Operations Supervisor




08-2015 Lauren Front 2-edited.jpg
Lauren Boyd, Enhanced Geothermal Systems (EGS) Program Manager




Eric Hass Front

Eric Hass, Program Manager - Hydrothermal, Low-Temperature & Coproduced Resources, and Systems Analysis