GeoLawWatch Open Legislation 11

Wyoming

2026 Regular Session

2 bills · Adjourned 6 Mar 2026
HB0012 Failed Introduction

Clean Air and Geoengineering Prohibition Act.

Wyoming's comprehensive geoengineering ban creates felony penalties of up to 5 years' imprisonment and $500,000+ fines for atmospheric interventions, while explicitly preserving the state's existing cloud seeding permit system and uniquely tasks the Department of Environmental Quality with monitoring all aircraft, space-based platforms, and ground facilities for prohibited atmospheric contaminant dispersal.

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HJ0001 Failed Introduction

Prohibiting unauthorized atmospheric geoengineering.

Wyoming's Legislature is requesting Congressional action to prohibit unauthorised atmospheric geoengineering over the state, citing concerns that federal agencies and military contractors are dispersing chemicals such as aluminium oxide, barium, and stratospheric sulphates without public knowledge, while explicitly preserving Wyoming's existing ground-based cloud seeding operations.

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2025 Regular Session

1 bill · Adjourned 6 Mar 2025
HB0208 Missed CoW Cutoff

Atmospheric geoengineering prohibition.

Wyoming's geoengineering ban would have ended the state's 13-site cloud seeding program, which brings in $570,000 annually from out-of-state water authorities desperate to boost Colorado River snowpack. The bill died in committee after its fiscal impact on existing water development operations became clear.

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