HB4127

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

Chamber Passed·10/28/25

Defines advanced nuclear reactors in Michigan law.

This bill amends Michigan's Public Utilities Act to define "advanced nuclear reactor technologies" as material improvements to a utilization facility with significant safety features compared to reactors operating before January 1, 2016. It includes advanced nuclear reactors and existing facilities benefiting from federal programs. The definition is used in the context of Michigan's energy policies and regulations.

Included in complete analysis

  • Overview
  • Core Provisions
  • Implementation
  • Impact
  • Legal Framework
  • Critical Issues

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Where it stands

Last
Passed the House · 85–19 · Oct 28, 2025
Current
Energy And Environment Committee
Next
Senate floor vote

Sponsors

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4
15
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Democratic CaucusRepublican Caucus

Roll Call Votes

85 Yea

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19 Nay

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Calendar

Mar 25, 2025

9:00 AM

House Energy

Mar 4, 2025

9:00 AM

House Energy

History

Oct 30, 2025

Senate

Passed By House With Immediate Effect

Oct 30, 2025

Senate

Referred To Committee On Energy And Environment

Oct 28, 2025

House

Read A Third Time