# New Hampshire HB1618: prohibiting solar radiation modification, weather modification, and other polluting atmospheric interventions.

New Hampshire HB1618, prohibiting solar radiation modification, weather modification, and other polluting atmospheric interventions., is a 2025-2026 Regular Session House bill sponsored by Melissa A. Litchfield; status failed, last action 2026-02-05 (Inexpedient to Legislate: MA VV 02/05/2026 HJ 3 P. 20) (as of 2026-10-14).

- Canonical: https://policyrisk.com/state-bill/NH-HB1618-2025-2026
- As of: 2026-10-14
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Bill: New Hampshire HB1618
- State: New Hampshire
- Session: 2025-2026 Regular Session
- Title: prohibiting solar radiation modification, weather modification, and other polluting atmospheric interventions.
- Status: failed
- Chamber: House
- Introduced: 2025-12-10
- Last action: 2026-02-05, Inexpedient to Legislate: MA VV 02/05/2026 HJ 3 P. 20
- Sponsor: Melissa A. Litchfield
- Cosponsors: 8
- Touches household money: no
- Economic provisions PRIA read: 0

## Summary

No summary available.

## Bill overview

No economic impacts identified for this bill.

## Sponsors and cosponsors

- Sponsor: Melissa A. Litchfield
- Cosponsor: Linda McGrath (Republican), House
- Cosponsor: Matt Drew (Republican), House
- Cosponsor: Michael E Granger (Republican), House
- Cosponsor: Peter L. Mehegan (Republican), House
- Cosponsor: Rita G Mattson (Republican), House
- Cosponsor: Sayra Lynn DeVito (Republican), House
- Cosponsor: Sherri L Reinfurt (Republican), House
- Cosponsor: Susan G DeRoy (Republican), House

## Actions (5)

- 2026-02-05: Inexpedient to Legislate: MA VV 02/05/2026 HJ 3 P. 20 (House)
- 2026-01-26: Committee Report: Inexpedient to Legislate 01/14/2026 (Vote 15-0; CC) HC 5 P. 16 (House)
- 2026-01-20: Executive Session: 01/14/2026 04:00 pm GP 229 (House)
- 2026-01-08: Public Hearing: 01/14/2026 04:00 pm GP 229 (House)
- 2025-12-10: Introduced 01/07/2026 and referred to Science, Technology and Energy HJ 1 P. 28 (House)

## Bill text

- Introduced, 2025-12-10: [PDF](https://gc.nh.gov/bill_status/pdf.aspx?q=billVersion&id=23995)

## Related bills

- HB2026: (New Title) relative to the state 10-year transportation improvement plan; relative to toll rate adjustments and periodic toll reviews for the New Hampshire tu… (became law)
- HB1002: repealing the solar energy systems tax exemption. (failed)
- SB101: (Second New Title) authorizing parents to enroll their children in any public school in the state. (failed)
- CACR22: relating to the compensation of the legislature. Providing that the present compensation per elected term for legislators is hereby abolished. (failed)
- HB1834: relative to the education freedom account enrollment cap. (failed)
- HB1786: relative to creating a state assessment on non-homestead luxury second homes to fund statewide housing development programs and address housing shortages and m… (failed)

## Sources
- [Introduced (PDF)](https://gc.nh.gov/bill_status/pdf.aspx?q=billVersion&id=23995)

## Related
- [HB2026: (New Title) relative to the state 10-year transportation improvement plan; rela…](https://policyrisk.com/state-bill/NH-HB2026-2025-2026)
- [HB1002: repealing the solar energy systems tax exemption.](https://policyrisk.com/state-bill/NH-HB1002-2025-2026)
- [SB101: (Second New Title) authorizing parents to enroll their children in any public s…](https://policyrisk.com/state-bill/NH-SB101-2025-2026)
- [CACR22: relating to the compensation of the legislature. Providing that the present com…](https://policyrisk.com/state-bill/NH-CACR22-2025-2026)
- [HB1834: relative to the education freedom account enrollment cap.](https://policyrisk.com/state-bill/NH-HB1834-2025-2026)
- [HB1786: relative to creating a state assessment on non-homestead luxury second homes to…](https://policyrisk.com/state-bill/NH-HB1786-2025-2026)
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Source: PRIA, https://policyrisk.com/state-bill/NH-HB1618-2025-2026 (as of 2026-10-14).