Underground Thermal Energy Storage for Electricity Generation (UTESe)  

Education Type: 
1.5 Hours
AIA Learning Units: 
1.5 LU
Professional Development Hours: 
1.0 PDH

Included is an overview of Underground Thermal Energy Storage (UTES) systems and how they could be used for electrical production. This live webinar applies to DoD and private sector projects. PDH certificates will be provided upon completion of a survey. In this live webinar, we will discuss using UTES in combination with an Organic Rankine Cycle (ORC) electrical generator to produce electricity and using UTES as a "thermal battery" to provide continuous power for days or even weeks (i.e., at night, on cloudy days). UTES systems in general have increased resiliency due to their underground placement vs. above ground, complex electro-chemical battery systems. Even in severe weather like tornados or hurricanes, power may still be available for extended periods via an ORC fueled by the UTESe. We will also discuss applications of this technology on military bases and even a proposed system on the moon for NASA or Space Force.


Charles Hammock, PE, LEED AP BD+C, CGD of Andrews, Hammock, and Powel, Inc.   

This webinar is presented by Charles Hammock, PE, LEED AP BD+C, CGD of Andrews, Hammock, and Powell, Inc. as part of ESTCP/DoD UTES Technology Transfer Project. During the past 35 years, Mr. Hammock has been exclusively involved in the engineering of Heating, Ventilating and Air Conditioning (HVAC) systems for governmental, industrial, commercial and institutional clients at facilities throughout the United States and Internationally. His specialty and passions in this arena are centered on innovative deployments of advanced Geothermal Heat Pumps (GHPs) systems for governmental, institutional, and commercial clients. He served as the Principal Investigator (PI) for the Department of Defense's ESTCP Energy & Water 2017 Project of the Year where fiber optic based DTS and the integration of UTES with GHPs were demonstrated at two DoD Locations. He is a licensed Professional Engineer (PE) in multiple states and is one of the three founders of Andrews, Hammock and Powell, Inc., a US-based Consulting Engineering firm established in 1988 and located in Macon, Georgia.

Learning Objectives

This course will cover:

  • Technology overview of Underground Thermal Energy Storage for Electricity Generation (UTESe);
  • Definitions and Major Abbreviations;
  • Why to consider UTESe Technology;
  • Demonstration Recommendations;
  • ESPC, UESC Possibilities; and
  • Terrestrial possibilities and Beyond
Federal Agencies and Facility Criteria: