Next-Generation Geothermal Research and Development Act
- Bill Number
- S. 4406
- Origin Chamber
- Senate
- Congress
- 119th Congress, Session 2
- Policy Area
- Energy
- Status
- Introduced
- Latest Action
- 2026-04-28: Read twice and referred to the Committee on Energy and Natural Resources.
- Last Updated
- 2026-05-20T12:18:34Z
AI-Generated Summary
Purpose
The Next-Generation Geothermal Research and Development Act (S. 4406) amends the Energy Independence and Security Act of 2007 (EISA) to promote research, development, demonstration, and commercial use of advanced geothermal energy technologies, known as "next-generation geothermal systems." These include enhanced geothermal systems (which improve natural underground heat reservoirs), closed-loop systems (using sealed circuits to capture heat from borehole walls), and systems in supercritical conditions (extremely hot subsurface environments where fluids behave like both liquids and gases for higher energy output).
Key Provisions
- New Definitions (EISA §612): Adds terms like "closed-loop geothermal systems," "next-generation geothermal systems," "supercritical conditions," and "supercritical geothermal" to clarify scope.
- Research and Development Expansions:
- Incorporates machine learning in hydrothermal tools.
- Coordinates geothermal R&D across the Department of Energy (DOE).
- Enhances a public data repository with fossil fuel/mining data, standardizes it for analysis, and requires updates for better usability (e.g., maps, regional views).
- Mandates memorandums of understanding (MOUs) with Interior Department and others for sharing subsurface data (e.g., heat, seismic, minerals).
- Funds deep exploration boreholes (>8 km) in key U.S. geological areas for heat mapping, with public data release.
- Enhanced and Closed-Loop Systems (EISA §615):
- Expands testing to closed-loop and supercritical conditions at FORGE (Frontier Observatory for Research in Geothermal Energy) sites.
- Creates a "Next-Generation R&D Program" with milestone-based grants for supercritical research (e.g., drilling, materials, sensors).
- Requires a report on water use in these systems, comparing to other energy tech and exploring non-potable water options.
- Establishes a "center of excellence" at labs/universities for coordination, workforce training, and tech support.
- Awards grants for commercial innovations (e.g., drilling equipment, surface facilities like turbines) with 80% federal cost share max; prioritizes near-term deployment.
- Authorizes $5 million annually (FY2027–2031).
- Reporting and Assessments:
- Biennial progress reports on geothermal potential (including Alaska/Hawaii), barriers, and results.
- Updates U.S. Geological Survey (USGS) geothermal assessments: Initial updates within 2–5 years for conventional/next-gen/supercritical resources; quadrennial thereafter.
- Funding and Administration: Reauthorizes geothermal programs through FY2031; minor fixes to committee names and international cooperation.
Significant Changes to Existing Law
- Expands Scope: Shifts from traditional hydrothermal/enhanced systems to include closed-loop and supercritical tech across multiple EISA sections (e.g., §§613–615, 617, 623).
- Data and Collaboration: Adds public data integration, MOUs, and deep probes to EISA §614; replaces limited coordination with department-wide efforts.
- New Programs/Grants: Introduces dedicated next-gen program, centers, and innovation grants in §615(e); mandates FORGE supercritical testing.
- Assessments: Makes USGS evaluations (Energy Policy Act §2501) quadrennial with supercritical focus; requires prompt initial updates.
- Funding: Adds specific authorizations and extends others, replacing prior limits.
Potential Impacts
- Government Agencies: Increases DOE Geothermal Technologies Office workload/budget for R&D/grants; USGS/Interior gain drilling/data-sharing duties, potentially improving energy mapping.
- Citizens/Economy: Could lower geothermal costs, expand clean baseload power (reliable 24/7 renewable), create jobs in drilling/tech, and reduce water use in energy production.
- Energy Sector: Accelerates commercialization in diverse geologies, boosting U.S. geothermal capacity (e.g., beyond current ~4 GW).
- Environment: Promotes low-emission energy, but requires water use study to minimize impacts.
- International Relations: Supports global geothermal partnerships via minor EISA §624 update.
Main Stakeholders Affected
- Federal Agencies: DOE (lead), USGS, Interior Department.
- Research/Industry: National Labs, universities, private firms (e.g., drilling/manufacturing), public-private partnerships.
- States/Tribes/Local: Geological surveys, Tribal entities (incl. Alaska Natives), governments for data/workforce/tech assistance.
- Energy Developers: Geothermal operators benefiting from grants, data, and FORGE testing.
Notable Legal, Constitutional, or Political Implications
- Funding Authority: Authorizes appropriations without specific totals (except $5M/year subset), relying on congressional budgets; promotes public-private collaboration without new mandates.
- Interagency Coordination: MOUs enhance data sharing but preserve agency discretion ("to the maximum extent practicable").
- No Major Constitutional Issues: Aligns with congressional power over energy R&D (Commerce Clause); emphasizes public data access and merit-based grants.
- Political Neutrality: Bipartisan sponsors (Sens. Cortez Masto, Murkowski); focuses on innovation in renewables, potentially bridging energy security/climate goals without regulatory overhauls.
This summary was generated by AI and may contain inaccuracies. Refer to the official source document for the authoritative text.
Sponsor
Sen. Cortez Masto, Catherine [D-NV]
Cosponsors (1)
Recent Actions
- 2026-04-28: Read twice and referred to the Committee on Energy and Natural Resources.
- 2026-04-28: Introduced in Senate
Bill Versions
- Next-Generation Geothermal Research and Development Act — issued 2026-04-28 — PDF (23 pages)