Geoengineering Bills by State
2025-2026 Regular Session
In Session Year 2: Jan 1, 2026 – Dec 31, 2026
Governor: Donald Trump
| Bill # | Details | Effective | Status | |
|---|---|---|---|---|
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2017-2018 Regular Session
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| HB4586 | Geoengineering Research Evaluation Act of 2017 | Died in committee | ||
| This federal bill tasks the National Academies with developing a research roadmap for atmospheric albedo modification and governance frameworks for that research—explicitly excluding deployment questions—while Congressional findings frame geoengineering as a "higher risk reaction" compared to emissions reduction. |
Last update Tue 22 May 2018 |
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2019-2020 Regular Session
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| HB5519 | Atmospheric Climate Intervention Research Act | Died in chamber | ||
| Rather than prohibiting geoengineering, this federal bill tasks NOAA with building the scientific infrastructure to monitor and assess atmospheric climate intervention proposals, while linking such activities to existing weather modification reporting requirements and emphasising the Montreal Protocol's continued authority over stratospheric protection. |
Last update Wed 4 Mar 2020 |
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2025-2026 Regular Session
Session Adjourn Thu 31 Dec 2026
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| HB4403 | Clear Skies Act | Introduced | ||
| The federal "Clear Skies Act" (H.R. 4403) bans all weather modification activities nationwide with criminal penalties up to 5 years imprisonment and $100,000 fines per violation, while repealing all existing federal authorities that permit such activities and establishing a public EPA reporting system for suspected violations. |
Last update Tue 15 Jul 2025 |
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| HB6941 | Atmosphere Study Act | Introduced | ||
| A federal study-only bill requiring the Department of Energy to investigate health and environmental effects of federally-connected geoengineering projects, with no regulatory teeth or prohibition provisions—essentially a fact-finding exercise that commits Congress to nothing beyond receiving a report. |
Last update Tue 6 Jan 2026 |
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| HB7452 | Air Quality Act | Introduced | ||
| This federal bill goes beyond simple prohibition by creating dual reporting systems—one requiring airlines to disclose weather modification equipment on aircraft, another for public violation reports—while simultaneously repealing all existing federal weather modification authorities and banning even federally-funded research on atmospheric intervention. |
Last update Mon 9 Feb 2026 |
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