This page lists key Geothermal Technologies Office (GTO) staff, their assignments, and contact information. GTO is a technology office within 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 (serviced by the Blue, Orange, and Silver lines)
Get directions

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

Lauren Boyd, GTO Program Manager

Lauren Boyd, Enhanced Geothermal Systems

Headshot of Dr. Alexis McKittrick

Dr. Alexis McKittrick, Hydrothermal and Low Temperature Resources