Hot Rock Act boosts geothermal energy research

Summary#

The Hot Rock Act would create federal research, demonstration, workforce-training, and technical-assistance programs for hot dry rock geothermal energy. It would also amend the Energy Policy Act of 2005 to add geothermal exploration to specified categorical-exclusion provisions; the bill’s stated goal is to address technical challenges and support a path to commercial-scale production.

  • The Energy Department, through its Geothermal Technologies Office, would have to establish research grants, a field-testing site program, research and demonstration activities, and milestone-based development grants. Eligible entities include national laboratories, higher-education institutions, and private entities.
  • The Interior Department, through the U.S. Geological Survey, would have to establish research on deep-rock conditions, mapping of deep basement rocks in every state, the District of Columbia, and U.S. territories and possessions, and groundwater monitoring in areas affected by testing and demonstrations.
  • The Labor Department would have to arrange geothermal training with at least two higher-education institutions for eligible U.S. citizens or permanent residents who work for U.S.-headquartered companies and have specified oil-and-gas or technician jobs.
  • The Energy Department would have to provide technical assistance to regional and district offices of the Bureau of Land Management and Forest Service on federal authorizations for hot dry rock projects.
  • The bill is not law. It sets a 180-day deadline for the Interior Department programs, but does not give start dates for most other programs.

What it means for you#

  • Researchers, universities, national laboratories, and private companies: You could apply for some grants or take part in research and demonstration programs. The bill requires applications for certain grants, but does not set award criteria, amounts per recipient, or review timelines.
  • Oil-and-gas workers and listed technicians: If you meet the citizenship or residency and employment conditions, you could be eligible for training in geothermal-related fields. The Labor Department must prioritize participation by people in the specified oil-and-gas or technician roles. The bill encourages participation by union members and people from energy communities; it does not make either a condition of eligibility.
  • Federal land offices: BLM and Forest Service regional and district offices would receive technical assistance. The bill does not transfer their authorization powers to the Energy Department.
  • People in areas where projects are tested or demonstrated: The USGS would monitor groundwater in affected areas. The bill does not set monitoring standards or provide a new public service, compensation, or individual right.
  • Geothermal project developers: The bill would add geothermal exploration to specified categorical-exclusion provisions in the 2005 Act. The source materials do not include that Act’s current text, so the exact effect on environmental review cannot be verified here.

Money#

The bill authorizes up to $127 million per year for fiscal years 2027–2031, but authorization is not the same as an appropriation or money already available to spend.

  • The listed authorizations total $635 million over five years: $102 million per year for Energy Department programs, $5 million per year for USGS programs, $10 million per year for Labor Department training, and $10 million per year for Energy Department technical assistance.
  • The bill does not provide estimates of actual spending, staffing costs beyond these authorizations, or later returns from the programs.

What is unclear#

  • The bill does not say how grant applications will be judged, how much any recipient may receive, or how the field-testing site will be selected.
  • It does not set most program start dates, reporting requirements, or measures of success.
  • It does not explain how local or Indigenous communities would be involved, or set detailed groundwater-monitoring rules.
  • The definition of “superhot geothermal resource” uses temperature wording that is unclear, including “equal to 300 degrees Celsius or 374 degrees Celsius” and a range “between 300” and “374.”
  • The source materials do not include the current text of the Energy Policy Act provision being amended, so its existing scope and the precise change to environmental-review procedures cannot be checked.

Case for#

  • The bill appears intended to address specific technical barriers, including deep drilling, high temperatures and pressures, well construction, and fluid behavior.
  • Federal grants and a field-testing site could give eligible research groups and companies places to develop and test equipment and methods.
  • The bill pairs technical research with workforce training for people already working in oil-and-gas and related trades.
  • Federal land offices would receive technical expertise on geothermal projects, which could help them assess authorization requests.

Case against#

  • The bill authorizes substantial funding but leaves award criteria, project selection, and many oversight details to later decisions.
  • The bill does not set detailed rules for groundwater monitoring or explain how communities affected by testing would take part.
  • Adding geothermal exploration to categorical-exclusion provisions could change environmental-review requirements, but the supplied materials do not show the exact effect.
  • The bill’s broad technology catch-all and unclear temperature definition could leave important program boundaries to agency interpretation.