SB 6355 Washington Senate · 2025-2026 Regular Session

Concerning the electric transmission system.

SB 6355 proposes creating the Washington Electric Transmission Authority to upgrade the state’s electric grid for reliability and capacity. It directly affects utilities (both investor-owned and consumer-owned), communities near transmission projects, and tribal nations by establishing a centralized body to coordinate grid planning, siting, and permitting. Key mechanisms include appointing a 10-member board with diverse expertise (e.g., clean energy, tribal representation, ratepayer protection) to oversee transmission projects, identify priority corridors by 2027, and engage stakeholders. The bill aims to support Washington’s decarbonization goals (carbon neutral by 2030) by enabling access to regional renewable energy, improving resilience against extreme weather, and maintaining affordable rates. The authority would work to modernize infrastructure without requiring new voter approval.
Bill status signed all 5 stages cleared
Introduction
Feb 2026
Committee Review
Mar 2026
Senate Passage
Mar 2026
House Passage
Mar 2026
Signed into Law
Mar 2026
Introduced Feb 24, 2026 Signed Mar 30, 2026
Maddy AI version diff · 2 comparisons

What changed between versions

Substitute Bill Substitute Passed Legislature · 8 edits
MODERATE
This bill establishes a new Washington Electric Transmission Authority to oversee and expand state electric transmission infrastructure. Key changes include requiring Senate confirmation for board members, adding a 'neighboring landowner' definition, mandating specific consultation with tribes on transmission planning, and creating a new mechanism for counties to receive payments in lieu of property taxes for authority-owned transmission facilities.
Scope change
The bill's scope expanded to include formal tribal consultation frameworks, specific rural land use expertise on the board, and a new financial obligation for the authority to pay local counties for hosting transmission infrastructure.
REQUIREMENT

Board members appointed by the governor must now be confirmed by the Senate, and at least half must reside east of the Cascade Mountains.

The Authority must consult with neighboring landowners regarding wildfire mitigation and advanced transmission technologies.

The Tribal Clean Energy Partnership work group was replaced with a requirement to contract with the Governor's Office of Indian Affairs to develop a statewide tribal consultation framework for transmission planning.

The Authority must update its transmission corridor identification study every five years using an open and transparent process.

Apprenticeship programs used for construction must now demonstrate a 25% completion rate over the prior eight years.

DEFINITION

A new definition of 'neighboring landowner' was added to clarify who is affected by transmission corridors.

FISCAL

A new provision requires the Authority to make payments in lieu of property taxes to counties where it owns transmission facilities.

TIMELINE

The Authority must identify high-priority transmission corridors by October 30, 2027, based on a specific Western Transmission Expansion Coalition report.

Floor votes · Senate Mar 12, 2026 · House Mar 11, 2026

How they voted

3417
Passed
Total votes 51
Mar 12, 2026
D Democratic31
30 Yea 1 Nay
96% Yea
R Republican20
4 Yea 16 Nay
80% Nay
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
32
Key actions
14
Committee
10
Amendments
1
Mar 30, 2026
Signed into law
Governor signed.
executive
Mar 12, 2026
Lower · Passed
Speaker signed.
lower
Mar 12, 2026
Upper · Passed
President signed.
upper
Mar 12, 2026
Upper · Passed
Passed final passage; yeas, 32; nays, 17; absent, 0; excused, 0.
upper
Mar 12, 2026
Upper · Passed
Senate concurred in House amendments.
upper
Mar 11, 2026
Lower · Passed
Floor amendment(s) adopted.
lower
Mar 11, 2026
Amended
Committee amendment not adopted.
lower
Mar 9, 2026
Committee
Referred to Rules 2 Review.
lower
Mar 9, 2026
Lower · Passed
Minority; do not pass.
lower
Mar 9, 2026
Lower · Passed
APP - Majority; do pass with amendment(s).
lower
Mar 9, 2026
Lower · Passed
Executive action taken in the House Committee on Appropriations at 8:00 AM.
lower
Mar 5, 2026
Lower · Passed
Public hearing in the House Committee on Appropriations at 8:00 AM.
lower
Mar 2, 2026
Upper · Passed
Minority; without recommendation.
upper
Mar 2, 2026
Upper · Passed
Minority; do not pass.
upper
Mar 2, 2026
Upper · Passed
Executive action taken in the Senate Committee on Ways & Means at 10:30 AM.
upper
Feb 26, 2026
Upper · Passed
Public hearing in the Senate Committee on Ways & Means at 1:30 PM.
upper
Feb 26, 2026
Committee
On motion, referred to Ways & Means.
upper
1 primary · 8 co-sponsors

Sponsors