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A bipartisan package centered on the Geothermal Energy Advancement Act (H.R. 5631) is part of a broader effort to support U.S. geothermal production. The source report says federal clean-energy tax credits for geothermal were largely left intact while incentives for wind and solar face earlier deadlines; the package’s legislative status and specific provisions are not clear from the available material.
A bipartisan push in Congress to expand geothermal energy production is taking shape around the Geothermal Energy Advancement Act, H.R. 5631, a package combining six previously proposed bills, according to GreenBuildingAdvisor. The effort matters because geothermal’s federal clean-energy tax incentives were largely preserved even as wind and solar credits face tighter project deadlines.
GreenBuildingAdvisor reported on October 6 that H.R. 5631 is the most notable measure in a set of bipartisan proposals supporting geothermal production. The article describes the bill as an aggregate of six earlier bipartisan bills, but the material available does not provide the package’s individual provisions, sponsors, committee status or a timetable for votes.
The report says the 45Y clean electricity production tax credit and the 48E investment tax credit were essentially left in place for geothermal under the One Big Beautiful Bill Act. It contrasts that treatment with deadlines for wind and solar: projects starting construction after July 5, 2026, must be serviceable by the end of 2027 to qualify for 45Y, while technologies other than wind and solar generally have until before 2033 to begin construction to receive the full credit, followed by a phase-down.
The article presents expanded enhanced geothermal systems as a possible way to increase the reach of geothermal power. It does not report a specific production target, forecast, project award or change in current electricity output. The development at issue is the bipartisan legislative push, not a confirmed expansion in operating capacity.
Geothermal’s Longer Tax-Credit Runway
Federal tax credits can affect whether developers and utilities commit to projects that require substantial upfront investment. The different timelines described in the report may give geothermal developers more time to plan projects than wind and solar developers facing near-term construction and service deadlines. That policy contrast helps explain why lawmakers and industry advocates are focusing on geothermal.
Enhanced geothermal systems could, if developed at scale, broaden the places where geothermal power can be produced beyond locations with naturally accessible underground heat and fluids. The source frames this as a potential route to more round-the-clock clean electricity, not as an established result of the proposed legislation. Whether the bill changes deployment will depend on its provisions, passage, implementation and the economics of individual projects.
For energy markets, the package is a signal that geothermal has support across party lines at a time when federal incentives for different renewable technologies are being treated differently. That support may shape future investment decisions, but the report does not establish that the bills have already attracted new capital or increased construction.
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Tax Rules Behind the Geothermal Push
The One Big Beautiful Bill Act became law in 2025, according to the source report. Its provisions set sunset periods for clean-energy credits, including 45Y, a production-based credit for qualifying clean electricity, and 48E, an investment credit for qualifying facilities producing electricity with low or zero greenhouse-gas emissions.
GreenBuildingAdvisor says the law imposes a particularly compressed schedule for some wind and solar projects seeking 45Y: projects beginning construction after July 5, 2026, must be serviceable by the end of 2027. For other technologies, the article says projects must start construction before 2033 to qualify for the full credit, with incentives decreasing in later years. It reports that geothermal was not subject to the same treatment and that its 45Y and 48E credits were largely preserved.
In a July 2025 press release cited by the article, geothermal advocacy group Geothermal Rising described the tax-credit framework as providing longer-term certainty. That statement represents the organization’s view of the policy’s value; it is not evidence that projects have already been built or that the credits guarantee investment.
“This framework delivers the long-term certainty our industry has pursued for years.”
— Geothermal Rising executive director, in a July 2025 press release cited by GreenBuildingAdvisor
Bill Details and Timing Remain Open
The source material does not identify the bill’s sponsors, provide its full text, list the provisions of the six earlier bills, or say whether H.R. 5631 has advanced through committee. It also does not give a vote schedule or establish whether the package has enough support to become law. The phrase “bipartisan efforts” indicates cross-party involvement, but does not establish a final vote or enactment.
The article describes enhanced geothermal systems as having the potential to expand production, but offers no project-by-project data, cost estimates or output forecast. It is also unclear from the material how the tax-credit rules will apply to particular projects or how long any individual development would take to reach operation. Those questions limit what can be concluded about near-term electricity supply or investment.
Congressional Steps to Watch
The next concrete developments to watch are publication or review of H.R. 5631’s full text, committee consideration, and any scheduled votes. Those steps would clarify which measures the package contains and whether lawmakers intend to advance them together. Until then, the reported bipartisan backing is a policy development rather than a completed expansion program.
Developers and utilities will also need to make decisions under the current tax-credit rules, while regulators and project sponsors determine how the credits apply to specific plans. GreenBuildingAdvisor’s report does not give a date for further congressional action or identify a next hearing. Any assessment of the legislation’s effect on geothermal construction will depend on its progress and on subsequent project announcements.
Key Questions
What is the Geothermal Energy Advancement Act?
GreenBuildingAdvisor identifies H.R. 5631 as the leading measure in a bipartisan effort and describes it as a package combining six previously proposed bills focused on geothermal. The available source material does not list the package’s individual provisions.
Have the proposed geothermal bills become law?
The report describes bipartisan efforts to pass the bills but does not say that H.R. 5631 has passed Congress or been signed into law. Its legislative status and any vote schedule are not specified in the material provided.
How do geothermal tax credits compare with wind and solar credits?
According to the report, geothermal’s 45Y production and 48E investment credits were largely left intact. It says some wind and solar projects starting construction after July 5, 2026, must be serviceable by the end of 2027 to qualify for 45Y, while other technologies generally have until before 2033 to begin construction for the full credit.
What are enhanced geothermal systems?
They are geothermal systems discussed in the report as a potential way to expand production. The source does not explain their engineering details or provide estimates of how much additional power they could deliver.
When could the legislation affect geothermal projects?
The source gives no implementation timetable. The effect would depend on the bill’s contents, congressional action and how developers apply existing tax-credit rules to particular projects.
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