HB 2457 Arizona House · 57th Legislature - Second Regular Session

public utilities; plant construction; colocation

HB 2457 allows utilities to build new power plants colocated with large industrial energy users without needing environmental review, provided they give 30 days' written notice to the state commission and hold a public comment session in the affected county. The exemption applies only to public utilities (like municipal power entities) and requires the industrial user to already have all necessary zoning approvals. The state commission must define key terms like "colocated" (including distance or electrical connection details) and "large industrial energy user" (based solely on energy demand in megawatts, without favoring specific industries). This bill streamlines construction for certain projects while maintaining public input requirements.
Bill status failed 3 of 5 stages cleared
Introduction
Jan 2026
Committee Review
Mar 2026
House Passage
Mar 2026
Senate Passage
Governor
Introduced Jan 22, 2026 Last action Jun 10, 2026
Maddy AI version diff · 1 comparison

What changed between versions

Introduced Version House Engrossed Version (03/03/2026) · 3 edits · Mar 3, 2026
MINOR
The bill was renamed from the 'Introduced Version' to the 'House Engrossed Version,' indicating it has passed the House and is ready for the next legislative stage. The core policy change involves renaming the 'power plant and transmission line sitting committee' to 'siting committee' and updating the exemption criteria for new power plants. Specifically, the requirement for a plant to be colocated with a 'large industrial energy user' was changed to 'extra high load factor customer,' altering the eligibility threshold for utilities to bypass environmental compatibility certificates.
Scope change
The bill's scope was slightly narrowed regarding terminology, shifting focus from general 'large industrial energy users' to customers with 'extra high load factors,' which likely targets specific types of high-demand users rather than all large industries.
DEFINITION

The term 'large industrial energy user' was replaced with 'extra high load factor customer' in the exemption criteria, changing the specific type of customer eligible for the streamlined approval process.

REQUIREMENT

The name of the 'power plant and transmission line sitting committee' was shortened to 'power plant and transmission line siting committee' (removing the word 'line').

TECHNICAL

Minor formatting changes occurred, including the addition of 'House Engrossed' as the reference title and the insertion of '1.1' into the section number.

Floor votes · House Feb 25, 2026

How they voted

2826
Passed · 6 other
Total votes 60
Feb 25, 2026
D Democratic27
23 Nay 4
85% Nay
R Republican33
28 Yea 3 Nay 2
84% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
15
Key actions
8
Committee
1
Amendments
3
Apr 15, 2026
Upper · Passed
DP
upper
Mar 18, 2026
Upper · Passed
DP
upper
Mar 3, 2026
Lower · Passed
DPA
lower
Mar 3, 2026
Lower · Passed
PASSED
lower
Feb 26, 2026
Lower · Passed
PASSED
lower
Feb 25, 2026
House · Passed
House Vote: pass (28-26-6)
house
Feb 24, 2026
Lower · Passed
DPA
lower
Feb 12, 2026
Lower · Passed
DPA
lower
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Justin Wilmeth
Justin Wilmeth
RRepublican
AZ
2