Geoengineering Bills by State
| Bill # | Details | Effective | Status | |
|---|---|---|---|---|
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2025 Regular Session
Session Adjourn Wed 25 Jun 2025
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| HB2056 | Geoengineering; prohibition | Expired in House | ||
| Arizona HB 2056 repeals the state's existing weather modification regulatory system and replaces it with an absolute geoengineering ban enforced through a citizen-reporting network, mandatory 2-hour emergency investigations, Class 4 felony charges, and minimum $500,000-per-day civil penalties—the most aggressive enforcement regime among current state weather modification legislation. |
Last update Tue 28 Jan 2025 |
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| Note: Remained in House Natural Resources, Energy & Water and Rules committees. | ||||
| SB1432 | Prohibition; geoengineering | Expired in House | ||
| Arizona SB 1432 prohibits solar radiation management activities while explicitly preserving the state's traditional weather modification regulatory system. This minimalist approach establishes a ban without any enforcement mechanisms, penalties, or investigative authority, making it essentially unenforceable. |
Last update Tue 18 Mar 2025 |
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| Note: Passed by Senate but stuck in House Natural Resources, Energy & Water and Rules committees. | ||||
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2026 Regular Session
Session Adjourn Sat 25 Apr 2026
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| HB2042 | Solar radiation management; prohibition; enforcement | 24 Jul 2026 | Introduced | |
| Arizona HB 2042 prohibits solar radiation management activities and establishes a citizen complaint system requiring the Attorney General to investigate "credible" allegations, with enforcement limited to civil injunctive relief rather than criminal penalties or monetary fines—a notably restrained approach compared to other states' weather modification legislation. |
Last update Tue 13 Jan 2026 |
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| Status: Natural Resources, Energy & Water (NREW) Committee, then RULES - Next meeting 20th Jan, not included | ||||
| HB2125 | Weather modification; license; rules | Jul - Sep 2026 | Introduced | |
| Arizona HB 2125 is not a geoengineering ban but a comprehensive modernisation of the state's existing cloud seeding regulatory framework, adding dual-agency environmental review, mandatory public meetings, a NOAA-style transparency database, and citizen enforcement through Attorney General petitions. |
Last update Tue 13 Jan 2026 |
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| Status: Natural Resources, Energy & Water (NREW) Committee, then RULES - Next meeting 20th Jan, not included | ||||
| SB1098 | Climate; weather; modification; prohibition; penalties | 24 Jul 2026 | Introduced | |
| Arizona's bill would abolish its existing weather modification permit program and criminalise geoengineering as a felony, with $100,000 in penalties per violation. Notably, the enforcement mechanism relies on a citizen complaint process rather than proactive state monitoring. |
Last update Wed 14 Jan 2026 |
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| Status: Natural Resources (NR) Committee, then RULES - Next meeting 20th Jan, not on agenda | ||||