Utah Tests Imaging to De-Risk Geothermal

High-resolution seismic tools at DOE site aim to map fractures more precisely and lower uncertainty for enhanced geothermal projects

13 Feb 2026

Researchers at the US Department of Energy’s Utah FORGE site are testing high-resolution seismic imaging techniques designed to improve the mapping of underground fracture systems in enhanced geothermal projects, as the sector seeks to reduce technical and financial risk.

Enhanced Geothermal Systems (EGS) generate electricity by injecting water deep into hot rock to create fractures that allow heat to circulate back to production wells. While the concept has been proven, performance depends on accurately understanding how those fractures form and connect. Developers often rely on indirect measurements, leaving uncertainty that can affect drilling plans, cost estimates and investor assessments.

The new imaging methods being trialled at FORGE aim to deliver a clearer view of fracture networks created during stimulation. By capturing higher-quality seismic data and refining interpretation models, researchers hope to map stimulated zones with greater precision. Department of Energy officials describe the work as part of a broader effort to better understand subsurface behaviour and improve confidence in output forecasts.

For companies such as Fervo Energy, which has adapted oil and gas drilling techniques for geothermal use, improved fracture characterisation could inform well placement and stimulation design. In projects where a single well can cost tens of millions of dollars, even incremental gains in subsurface accuracy may influence capital allocation and operational planning.

Industry analysts see the research as part of a wider shift. Geothermal power is increasingly promoted as a round-the-clock renewable source that can complement intermittent wind and solar generation. Recent power purchase agreements and continued federal backing have signalled growing interest in firm, low-carbon electricity.

However, challenges remain. Advanced imaging techniques can increase upfront costs, and integrating research-driven approaches into standard commercial practice will require coordination between developers, service providers and regulators. Large-scale validation of the technology is also likely to take time.

As EGS projects move from pilot stages towards broader deployment, clearer insight into the subsurface is expected to play a central role in shaping project economics and investor confidence.