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

Sponsor

Jamie ThompsonR

Committee

Energy And Environment

Introduced

February 25, 2025

Latest action

October 30, 2025

Referred To Committee On Energy And Environment

Cosponsors (18)

Jaime GreeneRSamantha SteckloffDKarl BohnakRJason WoolfordRDavid PrestinRDouglas WozniakRJoey AndrewsDBrian BeGoleRMike McFallDJoseph AragonaRBill SchuetteRRylee LintingRJay DeBoyerRGregory AlexanderRAlicia St. GermaineRGreg VanWoerkomRWilliam BruckRStephen WoodenD

Summary

House Bill 4127 adds a new definition of "advanced nuclear reactor technologies" to Michigan's utility regulation law, encompassing both new advanced reactors with enhanced safety features and existing nuclear facilities that have undergone life-cycle management improvements. The bill primarily clarifies and expands Michigan's legal framework to recognize and potentially support these modernized nuclear energy sources within the state's energy infrastructure. This bill is tied to four companion bills (HB 4124, 4125, 4126, and 4128) and will only take effect if all of those related bills are also enacted, suggesting a comprehensive legislative package aimed at modernizing Michigan's approach to nuclear energy regulation and development.

Votes

HouseOct 28, 2025PassedSee how each member voted →

House Third Reading: Given Immediate Effect Roll Call #273

Yea 85 · 32 D · 53 R

Nay 19 · 15 D · 4 R

HouseMar 25, 2025PassedSee how each member voted →

Reported With Recommendation Without Amendment

Yea 15 · 5 D · 10 R

Nay 0

Note

Historical import. Session: 2025-2026

Official bill record ↗