HB 4127 Michigan House · 2025-2026 Regular Session

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

HB 4127 adds a specific definition for "advanced nuclear reactor technologies" to Michigan's energy law. The bill defines these as nuclear reactors with significant safety improvements over pre-2016 U.S. models, including federally defined advanced reactors and existing Michigan nuclear facilities that completed life cycle management. This definition will directly affect the Michigan Public Service Commission and electric utilities when evaluating nuclear energy projects and regulatory approvals. It creates a clear standard for identifying qualifying nuclear technologies under state law, ensuring consistent application of energy regulations.
Bill status passed both 4 of 5 stages cleared
Introduction
Feb 2025
Committee Review
Oct 2025
House Passage
Oct 2025
Senate Passage
Oct 2025
Governor
Introduced Feb 25, 2025 Last action Oct 30, 2025
Maddy AI version diff · 1 comparison

What changed between versions

House Introduced Bill As Passed by the House · 10 edits · Oct 28, 2025
MAJOR
The bill was amended to expand its scope by adding new provisions prohibiting certain rate increases without notice and hearing, qualifying residential energy conservation programs for federal exemptions, creating a fund, encouraging resource recovery facilities, prohibiting certain acts by energy providers, allowing securitization of stranded costs, reducing rates, providing for appeals and appropriations, and repealing certain acts. The text was also reformatted to improve readability and organization.
Scope change
The bill's scope was expanded to include additional provisions related to rate regulation, energy conservation program exemptions, resource recovery, and stranded cost securitization.
SCOPE

Added provisions to prohibit certain rate increases without notice and hearing to protect consumers from sudden utility rate hikes.

Added provision to repeal certain acts and parts of acts to remove outdated or conflicting legislation.

ELIGIBILITY

Added provisions to qualify residential energy conservation programs for certain federal exemptions, potentially reducing costs for energy efficiency programs.

FISCAL

Added provision to create a fund, though specific funding amounts and sources were not detailed in this section.

Added provision to allow for the securitization of stranded costs, enabling utilities to recover past investments through long-term financing.

REQUIREMENT

Added provision to encourage the utilization of resource recovery facilities, promoting waste recycling and environmental sustainability.

Added provision to prohibit certain acts and practices of energy providers to ensure fair treatment of consumers.

Added provision to reduce rates, though specific rate reduction mechanisms were not detailed in this section.

ENFORCEMENT

Added provisions for appeals and appropriations to ensure proper oversight and funding of the commission's operations.

TECHNICAL

Reformatted the bill text for better readability and organization, including improved spacing and line breaks.

Floor votes · House Oct 28, 2025

How they voted

This bill passed the Senate by voice vote (no roll call recorded).
Full legislative history

Actions timeline

Total actions
13
Key actions
3
Committee
4
Oct 30, 2025
Committee
REFERRED TO COMMITTEE ON ENERGY AND ENVIRONMENT
upper
Oct 30, 2025
Upper · Passed
PASSED BY HOUSE WITH IMMEDIATE EFFECT
upper
Oct 28, 2025
Lower · Passed
passed; given immediate effect Roll Call #273 Yeas 85 Nays 19 Excused 0 Not Voting 6
lower
Mar 25, 2025
Committee
referred to second reading
lower
Mar 25, 2025
Lower · Passed
reported with recommendation without amendment
lower
Feb 25, 2025
Committee
referred to Committee on Energy
lower
Feb 25, 2025
Introduced
introduced by Representative Rep. Jamie Thompson
lower
1 primary · 18 co-sponsors

Sponsors