New Hampshire 2026 Session Status: Passed House Bipartisan · 3 D · 2 R cosponsors

HB1738 — (Second New Title) relative to ratepayer benefits from the regional greenhouse gas initiative and relative to energy procurement and nuclear regulatory duties.

Last action — CONFERENCE REPORT ADOPTED

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

This bill has passed the House. Introduced December 17, 2025. It now moves to the second chamber.

Signed by Governor Kelly Ayotte (Republican) on July 20, 2026.

Next likely step: consideration and a floor vote in the Senate.

Odds of enactment

Moderate chance

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

Upgrade to see the exact probability and what's driving it.

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

Prognosis

Advancing 52% · moderate confidence
  • Passed House

    Current position in the legislative process.

  • 5 sponsors

    1 primary, 4 co-sponsors signed on.

  • Bipartisan support

    Sponsored across 2 parties (3 D · 2 R) — cross-party backing.

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

Summary

(Second New Title) relative to ratepayer benefits from the regional greenhouse gas initiative and relative to energy procurement and nuclear regulatory duties.

Bill Text

What changed in the latest version

127 added · 224 removed

Plain-language change summary

The updated version of HB 1738 introduces changes to the carbon dioxide emissions budget that will apply from 2027 onwards, including two new cost containment allowance levels. This is important because it aims to create a more flexible and responsive regulatory framework for managing greenhouse gas emissions. Additionally, the deadline for electric distribution utilities to seek proposals for energy agreements has been extended, allowing more time to secure environmentally beneficial energy sources. These adjustments could enhance both environmental compliance and energy procurement strategies, ultimately benefiting ratepayers.

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HB 1738-FN - VERSION ADOPTED BY BOTH BODIES 05/14/2026 1931s 4Jun2026...
CHAPTER 332 HB 1738-FN - FINAL VERSION 05/14/2026 1931s 4Jun2026...
HB 1738-FN - VERSION ADOPTED BY BOTH BODIES 05/14/2026 1931s 4Jun2026...
CHAPTER 332 HB 1738-FN - FINAL VERSION 05/14/2026 1931s 4Jun2026...
1 Multiple Pollutant Reduction Program;
332:1 Multiple Pollutant Reduction Program;
2 Carbon Dioxide Emissions Budget Trading Program.
332:2 Carbon Dioxide Emissions Budget Trading Program.
[2019 4,184,333 minus FCPBA minus SCPBA 2020 4,079,725 minus FCPBA minus SCPBA 2021 3,960,999 minus TBA 2022 3,842,274 minus TBA 2023 3,723,549 minus TBA 2024 3,604,823 minus TBA 2025 3,486,098 minus TBA] 2026 3,367,373 2027 [3,248,648] 2,993,220 2028 [3,129,922] 2,619,068 2029 [3,011,197] 2,244,915 HB 1738-FN - VERSION ADOPTED BY BOTH BODIES - Page 2 - 2030 and thereafter [2,892,472] 1,870,763 3 Compliance;
[2019 4,184,333 minus FCPBA minus SCPBA 2020 4,079,725 minus FCPBA minus SCPBA 2021 3,960,999 minus TBA 2022 3,842,274 minus TBA 2023 3,723,549 minus TBA 2024 3,604,823 minus TBA 2025 3,486,098 minus TBA] 2026 3,367,373 2027 [3,248,648] 2,993,220 2028 [3,129,922] 2,619,068 2029 [3,011,197] 2,244,915 2030 and thereafter [2,892,472] 1,870,763 332:3 Compliance;
V.
CHAPTER 332 HB 1738-FN - FINAL VERSION - Page 2 - V.
In addition to the provisions set forth in RSA 125-O:7, an affected CO2 source that fails to obtain and retire sufficient RGGI allowances during a compliance period, in accordance with RSA 125-O:22, I, shall obtain and surrender 3 RGGI budget [or early reduction] allowances in the next compliance period for each RGGI allowance that the affected CO2 source was short in obtaining compliance.
In addition to the provisions set forth in RSA 125-O:7, an affected CO2 source that fails to obtain and retire sufficient RGGI allowances during a compliance period, in accordance with RSA 125- O:22, I, shall obtain and surrender 3 RGGI budget [or early reduction] allowances in the next compliance period for each RGGI allowance that the affected CO2 source was short in obtaining compliance.
4 Cost Containment Allowances in Addition to the Budget.
332:4 Cost Containment Allowances in Addition to the Budget.
5 Repeal.
332:5 Repeal.
6 Peaceful Uses of Atomic Energy;
332:6 Peaceful Uses of Atomic Energy;
HB 1738-FN - VERSION ADOPTED BY BOTH BODIES - Page 3 - III.
III.The coordinator of nuclear development and regulatory activities shall have the duty to coordinate and produce the reports required by RSA 162-B:3, as well as coordinate the studies conducted, and the recommendations and proposals made, in this state with like activities in New England and other states and with the policies and regulations of the United States Nuclear Regulatory Commission.
The coordinator of nuclear development and regulatory activities shall have the duty to coordinate and produce the reports required by RSA 162-B:3, as well as coordinate the studies conducted, and the recommendations and proposals made, in this state with like activities in New England and other states and with the policies and regulations of the United States Nuclear Regulatory Commission.
These activities may include the management of funding and oversight of nuclear incentive CHAPTER 332 HB 1738-FN - FINAL VERSION - Page 3 - programs, such as those described by RSA 374-F:11, as well as outreach programs to inform and educate the public, particularly regarding safety.
These activities may include the management of funding and oversight of nuclear incentive programs, such as those described by RSA 374-F:11, as well as outreach programs to inform and educate the public, particularly regarding safety.
332:7 New Paragraph;
7 New Paragraph;
8 Purchased Power Agreements.
332:8 Purchased Power Agreements.
9 Purchased Power Agreements.
332:9 Purchased Power Agreements.
10 New Subparagraphs;
332:10 New Subparagraphs;
11 Purchased Power Agreements.
332:11 Purchased Power Agreements.
HB 1738-FN - VERSION ADOPTED BY BOTH BODIES - Page 4 - II.
II.
(a) Upon the petition of one or more electric distribution utilities, and after notice and hearing, the public utilities commission may authorize such utility or utilities to enter into multi- year agreements with new or incremental electric energy sources up to a total of 2 million megawatt hours statewide, on an annual basis, if it finds such agreements to be just and reasonable and in the public interest, provided that if at least 1 million megawatt hours are procured from advanced nuclear reactors as defined in RSA 374-F:2, II-a, an additional 1 million megawatt hours may be procured from existing, new, or incremental electric energy sources for a total of up to 3 million megawatt hours statewide annually.
(a) Upon the petition of one or more electric distribution utilities, and after notice and hearing, the public utilities commission may authorize such utility or utilities to enter into multi-year agreements with new or incremental electric energy sources up to a total of 2 million megawatt hours statewide, on an annual basis, if it finds such agreements to be just and reasonable and in the public interest, provided that if at least 1 million megawatt hours are procured from advanced nuclear reactors as defined in RSA 374- CHAPTER 332 HB 1738-FN - FINAL VERSION - Page 4 - F:2, II-a, an additional 1 million megawatt hours may be procured from existing, new, or incremental electric energy sources for a total of up to 3 million megawatt hours statewide annually.
12 Effective Date.
332:12 Effective Date.
LBA 26-2643 5/19/26 HB 1738-FN- FISCAL NOTE AS AMENDED BY THE SENATE (AMENDMENT # 2026-1931s) AN ACT relative to ratepayer benefits from the regional greenhouse gas initiative and relative to net metering, energy procurement, and nuclear regulatory duties.
Approved:
FISCAL IMPACT:
July 15, 2026 Effective Date:
Estimated State Impact FY 2026 FY 2027 FY 2028 FY 2029 Sections 1-5 Sections 1-5 Sections 1-5 Revenue $0 Indeterminable Indeterminable Indeterminable (see below) (see below) (see below) Energy Efficiency Fund Revenue Fund(s) All Sections All Sections All Sections Indeterminable Indeterminable Indeterminable (State's Utility (State's Utility (State's Utility Expenditures* $0 Costs) Costs) Costs) Sections 6-13 Sections 6-13 Sections 6-13 $126,000 $129,000 $135,000 (Utility (Utility (Utility Assessments) Assessments) Assessments) Funding Source(s) General Fund, Highway Fund, Various Agency Funds, and Utility Assessment per RSA 363-A Appropriations* $0 $0 $0 $0 Funding Source(s) None *Expenditure = Cost of bill *Appropriation = Authorized funding to cover cost of bill Estimated Political Subdivision Impact FY 2026 FY 2027 FY 2028 FY 2029 County Revenue $0 $0 $0 $0 County Expenditures $0 Indeterminable Indeterminable Indeterminable Local Revenue $0 $0 $0 $0 Local Expenditures $0 Indeterminable Indeterminable Indeterminable METHODOLOGY:
September 13, 2026
Sections 1 thru 5 Sections 1 thru 5 of this bill updates New Hampshire’s participation in the Regional Greenhouse Gas Initiative by revising the carbon dioxide emissions allowance cap from 2027 through 2030 and maintaining the 2030 allowance level thereafter unless modified through a future program review.
The bill also revises the cost containment reserve by establishing two allowance tiers and associated trigger prices to provide additional price controls.
These changes are intended to implement the third RGGI Program Review as adopted by participating states.
The Department of Environmental Services and the Department of Energy, which together administer New Hampshire’s participation in RGGI state this bill implements the third RGGI Program Review adopted by all participating states and updates the allowance cap trajectory beginning in 2027, resulting in larger annual reductions in allowances through 2030 than under current law.
The bill also modifies the cost containment reserve by adding a second tier of allowances to provide additional consumer price protection during periods of high allowance prices.
The Departments state that revenue from RGGI allowance auctions is deposited into the Energy Efficiency Fund and is primarily used to provide rebates to electricity customers to offset the cost of allowance purchases reflected in wholesale electricity prices.
In calendar year 2024, New Hampshire received approximately $65,800,000 in auction proceeds, of which about $62,600,000 was returned to ratepayers, with the remaining funds used for energy efficiency programs and administrative costs.
The Departments explain that future RGGI auction prices are uncertain and depend on market conditions, making the fiscal impact of the revised allowance trajectory indeterminable.
Economic modeling conducted as part of the RGGI Program Review indicates that if this bill is enacted, allowance prices under the updated program could decrease somewhat during the 2028 through 2030 period.
Under the bill, New Hampshire would continue to participate in RGGI auctions and is expected to receive auction proceeds in the range of approximately $33,000,000 to $46,000,000 per year during that period, with the majority returned to consumers through bill rebates.
This would represent a reduction compared to historical auction revenues of approximately $66,000,000 per year, but would preserve continued auction participation.
However, the Departments state that under current law, beginning in 2027, New Hampshire’s allowance structure would no longer align with RGGI program requirements and allowances would not be offered for sale at auction, resulting in the loss of all RGGI auction revenue, estimated at approximately $65,800,000 annually.
While this bill would reduce auction proceeds relative to prior years, it would avoid the complete loss of auction revenue under current law and maintain continued ratepayer benefits through rebates, with the net impact on State, county, and municipal energy costs remaining indeterminable.
Sections 6 thru 13 Sections 6 thru 13 of this bill enables electric utilities to own, operate, and offer advanced nuclear resources, modifies net metering provisions, expands the capacity limits of community solar projects, and allows electric distribution utilities to enter into long-term energy contracts.
The Department of Energy states this bill modifies the responsibilities of the coordinator of nuclear development to include management of funding and outreach programs;
however, these changes will not result in significant additional costs.
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The Department states this bill makes several changes to net metering.
The threshold between small and large customer generators is increased from 100 kW to 500 kW, resulting in additional compensation for certain customer-generators.
Increasing the number of small customer generators will increase net metering compensation costs for electric utilities, which are recovered from ratepayers.
Without information regarding the number of affected customer- generators, the Department is unable to estimate the total increase in costs.
Based on electricity consumption data, the State accounts for approximately 1% of total electricity usage and would therefore experience an increase in electricity costs proportional to any increase in net metering compensation costs.
The Department states increasing the annual cap for community solar projects from 6 megawatts to 12 megawatts will increase workload and would require one Utility Analyst IV position (13-11960 Miscellaneous Business Operations Specialists-7, SOC 13-08).
The estimated cost for this position is $126,000 in FY 2027, $129,000 in FY 2028, and $135,000 in FY 2029.
The bill does not provide authorization or funding for this position.
Any such position would be funded through the Department’s assessment on utilities pursuant to RSA 363-A and recovered from ratepayers.
The Department states modifications to long-term energy contract provisions will have minimal fiscal impact and can be managed with existing staff.
Lastly, the Department states counties and municipalities will experience increased electricity costs as a result of increased net metering compensation;
however, the extent of this impact is indeterminable.
AGENCIES CONTACTED:
Department of Environmental Services and Department of Energy
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Action History

  1. Signed by Governor Ayotte 07/15/2026; Chapter 332; eff. 09/13/2026

  2. Enrolled Adopted, VV, (In recess 06/04/2026); SJ 15

  3. Enrolled (in recess of) 06/04/2026 HJ 15

  4. Enrolled Bill Amendment # 2026-2190e: AA VV (in recess of) 06/04/2026 HJ 15

  5. Enrolled Bill Amendment # 2026-2190e Adopted, VV, (In recess of 06/04/2026); SJ 14

  6. Conference Committee Report 2026-2069c: Adopted, VV 06/04/2026 HJ 15

  7. Conference Committee Report # 2026-2069c, Adopted, VV; 06/04/2026; SJ 14

  8. Conference Committee Report Filed, # 2026-2069c; 06/04/2026

  9. Conference Committee Meeting: 05/26/2026 09:30 am GP 228

  10. Conferee Change: Rep. Ford Replaces Rep. Janigian 05/21/2026 HJ 14

  11. President Appoints: Senators Avard, Pearl, Watters; (In Recess 05/14/2026); SJ 13

  12. Sen. Avard Accedes to House Request for Committee of Conference, MA, VV; (In recess 05/14/2026); SJ 13

  13. Speaker Appoints: Reps. Vose, D. Thomas, Janigian, McGhee 05/14/2026 HJ 13 P. 150

  14. House Non-Concurs with Senate Amendment 2026-1931s (Reps. Vose, Janigian): MA VV 05/14/2026 HJ 13 P. 150

  15. Ought to Pass with Amendment # 2026-1931s, MA, VV; OT3rdg; 05/14/2026; SJ 12

  16. Sen. Watters Floor Amendment # 2026-1931s, AA, VV; 05/14/2026; SJ 12

  17. Committee Amendment # 2026-1735s, AF, VV; 05/14/2026; SJ 12

  18. Committee Report: Ought to Pass with Amendment # 2026-1735s, 05/14/2026, Vote 3-1; SC 18

  19. Special Order to 05/14/2026, Without Objection, MA; 05/07/2026 SJ 11

  20. Committee Report: Ought to Pass with Amendment # 2026-1735s, 05/07/2026, Vote 3-1; SC 17

  21. Hearing: 04/09/2026, Room 103, SH, 02:10 pm; SC 13

  22. Introduced 03/26/2026 and Referred to Energy and Natural Resources; SJ 7

  23. Ought to Pass: MA VV 03/26/2026 HJ 9 P. 4

  24. Committee Report: Ought to Pass 03/02/2026 (Vote 18-0; CC)

  25. Full Committee Work Session: 03/02/2026 11:00 am GP 159

  26. Executive Session: 03/02/2026 01:00 pm GP 159

  27. Ought to Pass: MA VV 02/12/2026 HJ 4 P. 67

  28. Referred to Ways and Means 02/12/2026 HJ 4 P. 67

  29. Committee Report: Ought to Pass 01/27/2026 (Vote 16-0; RC) HC 6 P. 20

  30. Executive Session: 01/27/2026 03:00 pm GP 229

  31. Public Hearing: 01/27/2026 01:00 pm GP 229

  32. Introduced 01/07/2026 and referred to Science, Technology and Energy HJ 1 P. 33

Sponsors

Sponsorship breakdown

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1 sponsors · 4 co-sponsors · 410 not signed on

Sponsors (1)

Co-sponsors (4)

Not signed on (410)

410 members have not signed on to this bill.

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"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.

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Frequently asked questions

What does HB1738 do?
(Second New Title) relative to ratepayer benefits from the regional greenhouse gas initiative and relative to energy procurement and nuclear regulatory duties.
Who sponsors HB1738?
HB1738 is sponsored by Cindy Rosenwald (Democrat), Kat McGhee (Democrat), Michael Vose (Republican), David Watters (Democrat), and Michael Harrington (Republican).
What is the current status of HB1738?
This bill has passed the House. Introduced December 17, 2025. It now moves to the second chamber.
Where can I track HB1738?
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