New Hampshire 2026 Session Status: Introduced 9 R cosponsors

HB 1618 — prohibiting solar radiation modification, weather modification, and other polluting atmospheric interventions.

Last action — Inexpedient to Legislate: MA VV 02/05/2026 HJ 3 P. 20

  1. 1
    Introduced
  2. 2
    In Committee
  3. 3
    Passed House
  4. 4
    Passed Senate
  5. 5
    To Executive
  6. 6
    Enacted

This bill has been introduced in the House. Introduced December 10, 2025. It must pass committee before a floor vote.

Next likely step: a committee referral and hearing.

Odds of enactment

Low chance

Based on the sponsor, cosponsors, and committee posture, this bill has a low chance of becoming law.

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A statistical estimate from our own model of past outcomes — an insight, not a guarantee. Policymaking is volatile.

Prognosis

Not enough signal yet

Not enough signal yet to read this bill's trajectory — we surface a likelihood only once there's real movement (stage, sponsorship, committee, or votes) to point to.

Based on stage, sponsorship breadth, committee status, recorded votes, and cross-state momentum — a description of the observable signals, not a prediction.

Summary

prohibiting solar radiation modification, weather modification, and other polluting atmospheric interventions.

Bill Text

Action History

  1. Inexpedient to Legislate: MA VV 02/05/2026 HJ 3 P. 20

  2. Committee Report: Inexpedient to Legislate 01/14/2026 (Vote 15-0; CC) HC 5 P. 16

  3. Executive Session: 01/14/2026 04:00 pm GP 229

  4. Public Hearing: 01/14/2026 04:00 pm GP 229

  5. Introduced 01/07/2026 and referred to Science, Technology and Energy HJ 1 P. 28

Sponsors

Sponsorship breakdown

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1 sponsors · 8 co-sponsors · 406 not signed on

Sponsors (1)

Co-sponsors (8)

Not signed on (406)

406 members have not signed on to this bill.

Show all 406 →

"Not signed on" means a member has not sponsored or co-sponsored this bill — it does not imply opposition. Members flagged Voted No have a recorded No vote on this bill.

Whip count is in markup. Polling the chamber and every recorded vote this session. Only the first open is slow. It’s instant for you after this. Calling the roll · Tallying · Engrossing

Subjects

environment energy
Cross-referencing the record. Reading this bill against every other bill in the corpus by meaning, not keywords. Only the first open is slow. It’s instant for you after this. Matching · Ranking · Engrossing

Frequently asked questions

What does HB 1618 do?
prohibiting solar radiation modification, weather modification, and other polluting atmospheric interventions.
Who sponsors HB 1618?
HB 1618 is sponsored by Linda McGrath (Republican), Matt Drew (Republican), Michael Granger (Republican), Melissa Litchfield (Republican), Rita Mattson (Republican), Sherri Reinfurt (Republican), Peter Mehegan (Republican), Sayra DeVito (Republican), and Susan DeRoy (Republican).
What is the current status of HB 1618?
This bill has been introduced in the House. Introduced December 10, 2025. It must pass committee before a floor vote.
Where can I track HB 1618?
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Last checked for changes 3 months ago · updated continuously

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