HB 4127 — Energy: nuclear; definition of advanced nuclear reactors; provide for. Amends sec. 10h of 1939 PA 3 (MCL 460.10h). TIE BAR WITH: HB 4129'25, HB 4125'25, HB 4126'25, HB 4128'25, HB 4124'25
Last action — REFERRED TO COMMITTEE ON ENERGY AND ENVIRONMENT
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✓Introduced
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✓In Committee
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3Passed House
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4Passed Senate
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5To Executive
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6Enacted
This bill has passed the House. Introduced October 30, 2025. It now moves to the second chamber.
Next likely step: consideration and a floor vote in the Senate.
Odds of enactment
Moderate chanceBased 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
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Passed House
Current position in the legislative process.
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1 sponsor
1 primary, 0 co-sponsors signed on.
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Single-party support
Sponsorship is currently within one party (1 R).
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Cleared a recorded vote
Passed 2 recorded votes so far.
Based on stage, sponsorship breadth, committee status, recorded votes, and cross-state momentum — a description of the observable signals, not a prediction.
Summary
Energy: nuclear; definition of advanced nuclear reactors; provide for. Amends sec. 10h of 1939 PA 3 (MCL 460.10h). TIE BAR WITH: HB 4129'25, HB 4125'25, HB 4126'25, HB 4128'25, HB 4124'25
Bill Text
What changed in the latest version
6 added · 5 removedPlain-language change summary
In the latest version of Bill HB 4127, six new lines were added, while five lines from the previous draft were removed. This change likely reflects updates aimed at improving clarity or addressing concerns raised during discussions. It’s important because these amendments can alter the bill's impact on the community, either by strengthening protections or modifying requirements.
HB-4127, As Passed House, October 28, 2025 HOUSE BILL NO.
RMH H00155'25_HB4127_INTR_1H00155'25_HB4127_APH_1 tia4sbzw78of to prohibit certain rate increases without notice and hearing;
RMH H00155'25_HB4127_INTR_1H00155'25_HB4127_APH_1 tia4sbzw78of 1 (e) (d) "Electric vehicle" means that term as defined in section 2(f)(iii) of the Michigan next energy authority act, 2002 PA 593, MCL 207.822.
(k) (j) "Qualified costs" means an electric utility's regulatory assets as determined by the commission, adjusted by the applicable portion of related investment tax credits, plus any costs that the commission determines that the electric utility RMH H00155'25_HB4127_INTR_1H00155'25_HB4127_APH_1 tia4sbzw78of 1 would be unlikely to collect in a competitive market, including, but not limited to, retail open access implementation costs and the costs of a commission approved restructuring, buyout or buy-down of a power purchase contract, together with the costs of issuing, supporting, and servicing securitization bonds and any costs of retiring and refunding the electric utility's existing debt and equity securities in connection with the issuance of securitization bonds.
This amendatory act does not take effect unless all of the following bills of the 103rd Legislature are RMH H00155'25_HB4127_INTR_1H00155'25_HB4127_APH_1 tia4sbzw78of enacted into law:
Final Page RMH H00155'25_HB4127_INTR_1H00155'25_HB4127_APH_1 tia4sbzw78of
View plain text versions (2)
- As Passed by the House View text Current pdf
- Introduced House Introduced Bill pdf
Action History
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REFERRED TO COMMITTEE ON ENERGY AND ENVIRONMENT
Sponsors
- Jamie Thompson · Primary
Sponsorship breakdown
Export CSV (upgrade) →1 sponsors · 0 co-sponsors · 146 not signed on · 19 voted No
Sponsors (1)
- Jamie Thompson Republican
Co-sponsors (0)
None.
Not signed on (146)
146 members have not signed on to this bill.
Show all 146 →"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.
Votes
| Party | Yea | Nay | Present | Not Voting |
|---|---|---|---|---|
| Democrat | 31 | 15 | 0 | 0 |
| Republican | 52 | 4 | 0 | 0 |
| Unaffiliated | 2 | 0 | 0 | 0 |
| Total | 85 | 19 | 0 | 0 |
| % of votes cast | 82% | 18% | 0% | 0% |
How each member voted (104)
| Member | Party | Vote |
|---|---|---|
| Myers-Phillips | — | Yea |
| O’Neal | — | Yea |
| Alabas Farhat | Democrat | Yea |
| Angela Witwer | Democrat | Yea |
| Betsy Coffia | Democrat | Nay |
| Brenda Carter | Democrat | Yea |
| Carrie Rheingans | Democrat | Nay |
| Chedrick Greene | Democrat | Yea |
| Cynthia Neeley | Democrat | Yea |
| Denise Mentzer | Democrat | Nay |
| Donavan McKinney | Democrat | Nay |
| Dylan Wegela | Democrat | Nay |
| Emily Dievendorf | Democrat | Nay |
| Erin Byrnes | Democrat | Nay |
| Jason M Hoskins | Democrat | Yea |
| Jason Morgan | Democrat | Nay |
| Jasper Martus | Democrat | Yea |
| Jennifer Conlin | Democrat | Yea |
| Jimmie Wilson Jr | Democrat | Nay |
| Joey Andrews | Democrat | Yea |
| John Fitzgerald | Democrat | Yea |
| Joseph Tate | Democrat | Yea |
| Julie Brixie | Democrat | Yea |
| Julie M. Rogers | Democrat | Yea |
| Kelly A Breen | Democrat | Yea |
| Kimberly Edwards | Democrat | Nay |
| Kristian Grant | Democrat | Nay |
| Laurie Pohutsky | Democrat | Nay |
| Mai Xiong | Democrat | Yea |
| Matt Koleszar | Democrat | Yea |
| Matt Longjohn | Democrat | Yea |
| Mike McFall | Democrat | Yea |
| Natalie Price | Democrat | Yea |
| Noah Arbit | Democrat | Yea |
| Penelope Tsernoglou | Democrat | Yea |
| Peter Herzberg | Democrat | Yea |
| Phil Skaggs | Democrat | Yea |
| Ranjeev Puri | Democrat | Yea |
| Reggie Miller | Democrat | Nay |
| Regina Weiss | Democrat | Yea |
| Samantha Steckloff | Democrat | Yea |
| Sharon MacDonell | Democrat | Nay |
| Stephanie A Young | Democrat | Yea |
| Stephen Wooden | Democrat | Yea |
| Tullio Liberati Jr. | Democrat | Yea |
| Tyrone Carter | Democrat | Yea |
| Veronica Paiz | Democrat | Nay |
| Will Snyder | Democrat | Yea |
| Alicia St. Germaine | Republican | Yea |
| Angela Rigas | Republican | Yea |
| Ann M. Bollin | Republican | Yea |
| Bill Schuette | Republican | Yea |
| Brad Paquette | Republican | Yea |
| Bradley Slagh | Republican | Yea |
| Brian BeGole | Republican | Yea |
| Bryan Posthumus | Republican | Yea |
| Cameron Cavitt | Republican | Yea |
| Curtis S VanderWall | Republican | Yea |
| David Prestin | Republican | Yea |
| David W. Martin | Republican | Yea |
| Donni Steele | Republican | Nay |
| Douglas C Wozniak | Republican | Yea |
| Gina Johnsen | Republican | Yea |
| Greg VanWoerkom | Republican | Yea |
| Gregory Alexander | Republican | Yea |
| Gregory Markkanen | Republican | Yea |
| James DeSana | Republican | Nay |
| Jamie Thompson | Republican | Yea |
| Jason Woolford | Republican | Yea |
| Jay DeBoyer | Republican | Yea |
| Jennifer Wortz | Republican | Yea |
| Jerry Neyer | Republican | Yea |
| John R. Roth | Republican | Yea |
| Joseph A. Aragona | Republican | Yea |
| Joseph Fox | Republican | Nay |
| Joseph Pavlov | Republican | Yea |
| Josh Schriver | Republican | Yea |
| Karl Bohnak | Republican | Yea |
| Kathy Schmaltz | Republican | Yea |
| Ken Borton | Republican | Yea |
| Luke Meerman | Republican | Yea |
| Mark A Tisdel | Republican | Yea |
| Matt Hall | Republican | Yea |
| Matt Maddock | Republican | Yea |
| Matthew Bierlein | Republican | Yea |
| Mike Harris | Republican | Yea |
| Mike Hoadley | Republican | Yea |
| Mike Mueller | Republican | Yea |
| Nancy Jenkins-Arno | Republican | Yea |
| Parker Fairbairn | Republican | Yea |
| Pauline Wendzel | Republican | Yea |
| Phil Green | Republican | Yea |
| Rachelle Smit | Republican | Yea |
| Rick Outman | Republican | Yea |
| Ron Robinson | Republican | Yea |
| Rylee Linting | Republican | Yea |
| Sarah Lightner | Republican | Yea |
| Steve Carra | Republican | Nay |
| Steve Frisbie | Republican | Yea |
| Thomas Kuhn | Republican | Yea |
| Tim Kelly | Republican | Yea |
| Timothy Beson | Republican | Yea |
| Tom Kunse | Republican | Yea |
| William Bruck | Republican | Yea |
| Party | Yea | Nay | Present | Not Voting |
|---|---|---|---|---|
| Republican | 52 | 4 | 0 | 0 |
| Democrat | 30 | 15 | 0 | 0 |
| Unaffiliated | 3 | 0 | 0 | 0 |
| Total | 85 | 19 | 0 | 0 |
| % of votes cast | 82% | 18% | 0% | 0% |
How each member voted (104)
| Member | Party | Vote |
|---|---|---|
| Myers-Phillips | — | Yea |
| O’Neal | — | Yea |
| St. Germaine | — | Yea |
| Alabas Farhat | Democrat | Yea |
| Angela Witwer | Democrat | Yea |
| Betsy Coffia | Democrat | Nay |
| Brenda Carter | Democrat | Yea |
| Carrie Rheingans | Democrat | Nay |
| Cynthia Neeley | Democrat | Yea |
| Denise Mentzer | Democrat | Nay |
| Donavan McKinney | Democrat | Nay |
| Dylan Wegela | Democrat | Nay |
| Emily Dievendorf | Democrat | Nay |
| Erin Byrnes | Democrat | Nay |
| Jason M Hoskins | Democrat | Yea |
| Jason Morgan | Democrat | Nay |
| Jasper Martus | Democrat | Yea |
| Jennifer Conlin | Democrat | Yea |
| Jimmie Wilson Jr | Democrat | Nay |
| Joey Andrews | Democrat | Yea |
| John Fitzgerald | Democrat | Yea |
| Joseph Tate | Democrat | Yea |
| Julie Brixie | Democrat | Yea |
| Julie M. Rogers | Democrat | Yea |
| Kelly A Breen | Democrat | Yea |
| Kimberly Edwards | Democrat | Nay |
| Kristian Grant | Democrat | Nay |
| Laurie Pohutsky | Democrat | Nay |
| Mai Xiong | Democrat | Yea |
| Matt Koleszar | Democrat | Yea |
| Matt Longjohn | Democrat | Yea |
| Mike McFall | Democrat | Yea |
| Natalie Price | Democrat | Yea |
| Noah Arbit | Democrat | Yea |
| Penelope Tsernoglou | Democrat | Yea |
| Peter Herzberg | Democrat | Yea |
| Phil Skaggs | Democrat | Yea |
| Ranjeev Puri | Democrat | Yea |
| Reggie Miller | Democrat | Nay |
| Regina Weiss | Democrat | Yea |
| Samantha Steckloff | Democrat | Yea |
| Sharon MacDonell | Democrat | Nay |
| Stephanie A Young | Democrat | Yea |
| Stephen Wooden | Democrat | Yea |
| Tullio Liberati Jr. | Democrat | Yea |
| Tyrone Carter | Democrat | Yea |
| Veronica Paiz | Democrat | Nay |
| Will Snyder | Democrat | Yea |
| Angela Rigas | Republican | Yea |
| Ann M. Bollin | Republican | Yea |
| Bill Schuette | Republican | Yea |
| Brad Paquette | Republican | Yea |
| Bradley Slagh | Republican | Yea |
| Brian BeGole | Republican | Yea |
| Bryan Posthumus | Republican | Yea |
| Cameron Cavitt | Republican | Yea |
| Curtis S VanderWall | Republican | Yea |
| David Prestin | Republican | Yea |
| David W. Martin | Republican | Yea |
| Donni Steele | Republican | Nay |
| Douglas C Wozniak | Republican | Yea |
| Gina Johnsen | Republican | Yea |
| Greg VanWoerkom | Republican | Yea |
| Gregory Alexander | Republican | Yea |
| Gregory Markkanen | Republican | Yea |
| Jaime Greene | Republican | Yea |
| James DeSana | Republican | Nay |
| Jamie Thompson | Republican | Yea |
| Jason Woolford | Republican | Yea |
| Jay DeBoyer | Republican | Yea |
| Jennifer Wortz | Republican | Yea |
| Jerry Neyer | Republican | Yea |
| John R. Roth | Republican | Yea |
| Joseph A. Aragona | Republican | Yea |
| Joseph Fox | Republican | Nay |
| Joseph Pavlov | Republican | Yea |
| Josh Schriver | Republican | Yea |
| Karl Bohnak | Republican | Yea |
| Kathy Schmaltz | Republican | Yea |
| Ken Borton | Republican | Yea |
| Luke Meerman | Republican | Yea |
| Mark A Tisdel | Republican | Yea |
| Matt Hall | Republican | Yea |
| Matt Maddock | Republican | Yea |
| Matthew Bierlein | Republican | Yea |
| Mike Harris | Republican | Yea |
| Mike Hoadley | Republican | Yea |
| Mike Mueller | Republican | Yea |
| Nancy Jenkins-Arno | Republican | Yea |
| Parker Fairbairn | Republican | Yea |
| Pauline Wendzel | Republican | Yea |
| Phil Green | Republican | Yea |
| Rachelle Smit | Republican | Yea |
| Rick Outman | Republican | Yea |
| Ron Robinson | Republican | Yea |
| Rylee Linting | Republican | Yea |
| Sarah Lightner | Republican | Yea |
| Steve Carra | Republican | Nay |
| Steve Frisbie | Republican | Yea |
| Thomas Kuhn | Republican | Yea |
| Tim Kelly | Republican | Yea |
| Timothy Beson | Republican | Yea |
| Tom Kunse | Republican | Yea |
| William Bruck | Republican | Yea |
Subjects
Frequently asked questions
- What does HB 4127 do?
- Energy: nuclear; definition of advanced nuclear reactors; provide for. Amends sec. 10h of 1939 PA 3 (MCL 460.10h). TIE BAR WITH: HB 4129'25, HB 4125'25, HB 4126'25, HB 4128'25, HB 4124'25
- Who sponsors HB 4127?
- HB 4127 is sponsored by Jamie Thompson (Republican).
- What is the current status of HB 4127?
- This bill has passed the House. Introduced October 30, 2025. It now moves to the second chamber.
- Where can I track HB 4127?
- Track HB 4127 free on One Click Politics — get push/email alerts when it moves.
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