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Arizona: SB1278

Solar radiation management; prohibition; enforcement.

Topics

Environmental Health

Bill Information

MAHA Approved

Summary

Bill Summary

Arizona SB1278 prohibits any person from intentionally injecting, releasing, or dispensing materials within Arizona for the purpose of solar radiation management (defined as altering atmospheric reflectivity to change sunlight reaching Earth). The bill prevents Arizona political subdivisions, public universities, and private entities receiving public funds from awarding grants for solar radiation management technology development. Any Arizona resident can file complaints with the Attorney General about alleged violations, including details about dates, locations, methods, and substances used. The Attorney General must investigate credible complaints and can initiate investigations based on reasonable suspicion, with authority to file lawsuits and courts empowered to order injunctive relief and attorney fees.

Why It Matters to MAHA

MAHA strongly supports this bill because it protects Arizona residents from unregulated atmospheric manipulation that could introduce unknown toxic chemicals into the air, water, and soil. Solar radiation management technologies involve dispersing substances like sulfate aerosols, metallic particles, or other compounds into the atmosphere without adequate long-term safety testing or public consent—exactly the kind of experimental chemical exposure MAHA opposes. This bill embodies MAHA principles of precaution against untested technologies that could contaminate the environment and harm human health. By prohibiting public funding for these technologies and enabling citizen enforcement, the bill puts community health and environmental integrity ahead of experimental geoengineering schemes.

Introduced

01/27/2026

In Committee

02/09/2026

Crossed Over

02/25/2026

Dead

06/14/2026

Sponsor

David Farnsworth

Republican Senator (AZ)

Activity

03/03/2026

Senate motion to reconsider third reading

03/03/2026

Transmit to Senate

03/03/2026

House miscellaneous motion: Motion by Representative Carbone that the House accede to the request of the Senate to return SB1278 for further reconsideration. Motion Passed by vv.

03/03/2026

Senator Kavanagh moved that the Senate request the House of Representatives return SB 1278 which was passed by the Senate and transmitted to the House of Representatives on February 25, 2026 for the purpose of reconsideration. Motion carried.

02/26/2026

Senate COW 02/25 - Sundareshan flr amend (ref Bill) - Senate COW 02/25 - Sundareshan flr amend (ref Bill)

02/25/2026

Transmit to House

02/25/2026

Senate third reading PASSED voting: (16-11-3-0)

02/25/2026

Senate Committee of the Whole action: Do Pass

02/10/2026

Senate minority caucus: Do pass

02/10/2026

Senate majority caucus: Do pass

02/09/2026

Senate consent calendar

02/09/2026

Senate RULES Committee action: Proper For Consideration, voting: (0-0-0-0)

02/09/2026

Senate Rules (13:00:00 2/9/2026 Caucus Room 1)

02/03/2026

Senate NR Committee action: Do Pass, voting: (5-2-1-0)

02/03/2026

Senate Natural Resources (13:30:00 2/3/2026 SHR 1)

01/28/2026

Senate read second time

01/27/2026

Assigned to Senate RULES Committee

01/27/2026

Assigned to Senate NR Committee

01/27/2026

Introduced in Senate and read first time

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