‘Geothermal battery’ company EarthBridge Energy secures Texas site

LinkedIn
Twitter
Reddit
Facebook
Email

Geothermal-based energy storage company EarthBridge Energy has secured land rights to deploy its technology in Texas.

The Texas General Land Office issued a geothermal lease to EarthBridge in West Texas, the company announced earlier this week (2 May).

EarthBridge said it now plans to deploy its GeoBattery energy storage technology as part of a new, hybrid energy development combining additional, on-site renewable energy resources.

CEO Derek Adams said: “This marks an important step in EarthBridge’s strategy to deploy geothermal energy storage assets across the US and adds a key project to our portfolio.”

This article requires Premium SubscriptionBasic (FREE) Subscription

Enjoy 12 months of exclusive analysis

Not ready to commit yet?
  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Annual digital subscription to the PV Tech Power journal
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

The company’s system will absorb excess electricity from wind and solar farms and store it for 10-1000+ hours, feeding it back to the grid when it is needed.

The system stores heat energy in subsurface reservoirs and converts it back to electricity using a high-efficiency turbine. The technology brings the installed cost of long-duration energy storage (LDES) below $10/kWh and enables the deployment of 100% carbon-free energy at scale, EarthBridge claimed.

To charge, the system draws water from an underground reservoir via a well, which is then simultaneously heated and cooled when at the surface by an electrical heat pump. The heated and chilled water are then stored in different zones of an underground reservoir, or different reservoirs, depicted below (taken from a company overview).

To charge, the system brings the heated and chilled water back to the surface where the heat pump system is reversed and used to drive a power turbine converting the thermal energy back to electricity. The outflow water is directed back to the source well.

The company said its Geobattery doesn’t require hot geothermal sources so can be deployed anywhere where you can drill a well for water. Major sedimentary basins are a sweet spot, it added.

The company intends to mainly monetise its technology using price arbitrage in the wholesale energy market.

It can be deployed front-of-meter like any generating facility, or behind-the-meter through a PPA with a wind or solar farm or as an asset sale with a development fee.

Last month, the company partnered with the US Department of Energy and three national labs – National Renewable Energy Laboratory (NREL), Lawrence Berkeley National Laboratory and Idaho National Laboratory – to explore the potential of underground geothermal energy storage across the US.

Read Next

Premium
September 18, 2025
ESN Premium speaks to Matt Harper, president of flow battery company Invinity Energy Systems, about pursuing a competitive advantage in an emerging space.
September 18, 2025
Hydrostor has secured US$55 million in funding from Export Development Canada (EDC) to advance development activities for its 200MW/1,600MWh Silver City Energy Storage Centre project in Broken Hill, New South Wales, Australia.
September 17, 2025
South Korean battery and electronics materials manufacturer Samsung SDI debuted its new battery energy storage system (BESS) products at the RE+ trade show in Las Vegas, US.
September 17, 2025
China has published a national plan to promote large-scale energy storage facilities, encouraging investment and broader participation in the electricity market.
September 16, 2025
Ignitis Group and Olana Energy have progressed BESS projects in Lithuania closer to construction, with the order of equipment and final investment decision (FID) taken, respectively.

Most Popular

Email Newsletter