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
Washington, DC 20585
Nearest Metro stop: Smithsonian (blue/orange line)
For media inquiries, please email the EERE communications team at EE.Media@ee.doe.gov.
Susan Hamm, Acting Director
Program Managers and Supervisors
Matthew Kalmuk, Operations Supervisor
Lauren Boyd, Enhanced Geothermal Systems (EGS) Program Manager
Eric Hass, Hydrothermal Program Manager
Tim Reinhardt, Program Manager, Systems Analysis and Low-Temperature and Coproduced Resources Programs
Other Key Contacts
Communications and Outreach
Heat pump projects are managed by the Building Technologies Office because the U.S. Department of Energy classifies geothermal heat pumps as a technology that makes buildings more energy efficient, productive, and affordable. Conversely, the focus of the Geothermal Technologies Office is electricity production: to research, develop, and validate cost-competitive technologies and tools that accelerate the growth of geothermal energy.
The Geothermal Technologies Office is also supported by staff at several DOE national laboratories.