Louisiana

Ban in force3 bills passed

2026 Regular Session

1 bill · Adjourned 1 Jun 2026

SB189 Passed

Prohibits the intentional release or dispersion, by burning of fuel, of chemicals into the environment of this state with the express purpose of affecting temperature. (8/1/26)

Senator Fesi returns to amend the atmospheric modification ban he authored just last year, adding seven words – “including by the burning of fuel in an aircraft engine” – to a prohibition that already covers dispersal “by any means,” making this less a legal expansion than a pointed declaration about what his law was always meant to cover.

Became Act No. 601 without the Governor's signature.

2025 Regular Session

3 bills · Adjourned 12 Jun 2025

HB608 Failed in House

Creates the Louisiana Atmospheric Protection Act (EG NO IMPACT See Note)

Louisiana's more aggressive geoengineering bill combined atmospheric prohibitions with telecommunications infrastructure mandates and electromagnetic radiation limits, but failed on the House floor 21-72 after the legislature had already enacted the simpler SB 46.

Failed on 3rd reading in House: yeas 21, nays 72

SB46 Passed

To prohibit the intentional release, or dispersion of chemicals into the environment of this state with the express purpose of affecting temperature. (8/1/25)

Louisiana becomes the latest state to enact a geoengineering prohibition, but uniquely accomplishes this by simultaneously repealing its existing weather modification licensing framework, effectively transitioning from regulated permission to outright ban.

Enacted as Act No. 95 of the 2025 Regular Session.

SCR67 Passed

To memorialize Congress to investigate geoengineering in Louisiana.

Louisiana's legislature unanimously memorialises Congress to investigate geoengineering activities over the state, with the resolution's preamble explicitly referencing atmospheric trails "distinct from ordinary contrails" as a matter of public concern.

Adopted by both chambers; transmitted to Congress.