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Arizona: HB2042

Solar radiation management; prohibition; enforcement

Topics

Environmental Health

Bill Information

MAHA Approved

Summary

This bill proposes to prohibit solar radiation management (SRM) activities in Arizona, which refers to any intentional attempt to modify atmospheric reflectivity to change the amount of sunlight reaching the earth. Specifically, the bill would make it illegal for anyone to inject, release, or dispense materials within Arizona for SRM purposes. Additionally, the bill prevents any political subdivision, public university, or publicly funded private entity from providing grants for SRM technology development. The bill establishes a complaint mechanism where any Arizona resident can submit a detailed complaint to the Attorney General about potential SRM violations, including information such as dates, location, and supporting evidence. The Attorney General is required to investigate credible complaints and may independently investigate suspected violations. If a violation is found in court, the bill allows for injunctive relief, attorney fees, and potential additional remedies. The legislation aims to prevent potential climate engineering techniques that might involve manipulating solar radiation, reflecting concerns about the potential environmental and ecological consequences of such interventions.

Introduced

01/12/2026

In Committee

02/02/2026

Crossed Over

02/26/2026

Passed

03/10/2026

Vetoed

03/12/2026

Sponsors

Lisa Fink

Republican Representative (AZ)

Ralph Heap

Republican Representative (AZ)

Rachel Keshel

Republican Representative (AZ)

David Marshall Sr.

Republican Representative (AZ)

Teresa Martinez

Republican Representative (AZ)

Khyl Powell

Republican Representative (AZ)

Michael Way

Republican Representative (AZ)

Activity

03/12/2026

Governor Vetoed

03/10/2026

Transmitted to Governor

03/03/2026

Transmit to House

03/03/2026

Senate third reading PASSED voting: (17-13-0-0)

03/03/2026

Senate miscellaneous motion: HB 2042 substituted for SB 1278. Motion carried.

03/03/2026

Introduced in Senate and read first time

02/26/2026

Transmit to Senate

02/26/2026

House third reading PASSED voting: (31-23-6-0)

02/25/2026

House Committee of the Whole action: Do Pass

02/03/2026

House minority caucus: Do pass

02/03/2026

House majority caucus: Do pass

02/02/2026

House consent calendar

02/02/2026

House RULES Committee action: constitutional and in proper form, voting: (8-0-0-0-0-0)

02/02/2026

House Rules (13:00:00 2/2/2026 HHR 4)

01/27/2026

House NREW Committee action: Do Pass, voting: (6-4-0-0-0-0)

01/27/2026

House Natural Resources, Energy & Water (14:00:00 1/27/2026 HHR 3)

01/13/2026

House read second time

01/12/2026

Assigned to House RULES Committee

01/12/2026

Assigned to House NREW Committee

01/12/2026

Introduced in House and read first time

12/11/2025

Prefile

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