New Hampshire proposes ban on geoengineering and weather modification practices

The New Hampshire House Science, Technology and Energy Committee convened on February 11, 2025, to discuss a significant bill aimed at regulating weather modification practices in the state. The proposed legislation seeks to repeal existing statutes related to weather modification experimentation and establish a prohibition on geoengineering activities, including solar radiation modification and stratospheric aerosol injection.

The bill, introduced by Representative Potenza, emphasizes the need for public consent before any weather modification experiments can take place. It specifically allows for cloud seeding only in the event of a declared state of emergency due to severe drought, with the governor having the authority to initiate such actions. The legislation outlines the necessary steps for cloud seeding, ensuring that environmental reviews are conducted to assess potential risks and benefits.

During the meeting, representatives raised questions regarding the enforcement of the proposed prohibitions and the absence of penalties for violations. Potenza clarified that the bill aims to assert New Hampshire's stance against weather modification without imposing enforcement mechanisms, as the state has not previously consented to such practices.

The Department of Environmental Services (DES) provided input on the bill, noting that while the proposed changes would reduce the administrative burden on the department, there are still concerns about the implications of cloud seeding and the need for thorough environmental assessments. DES representatives acknowledged the lack of familiarity with cloud seeding practices in New Hampshire and expressed uncertainty about the conditions necessary for effective cloud seeding.

The discussion highlighted the growing national conversation around weather modification, with similar legislation being considered in other states, including Tennessee and Florida. As the committee continues to deliberate, the bill's proponents emphasize the importance of protecting public health and the environment from potential risks associated with geoengineering practices.

The committee plans to review the bill further, with additional discussions expected in the coming weeks as stakeholders weigh the implications of regulating weather modification in New Hampshire.