Chapters 173-441 and 173-446 WAC – Electricity Markets
On December 3, 2024, we adopted amendments to two rules:
- Chapter 173-441 WAC, Reporting of Emissions of Greenhouse Gases
- Chapter 173-446 WAC, Climate Commitment Act Program Rule
The purpose of these updates is to help determine which entities will be responsible for emissions associated with electricity imported from centralized electricity markets. This rule does not modify eligibility criteria for inclusion under the Cap-and-Invest Program. The rule establishes a framework that accounts for specified electricity imported through centralized electricity markets. The resulting compliance obligation is assigned in the Climate Commitment Act Program Rule (Chapter 173-446 WAC), with the processes and procedures for identifying resources contained within the Reporting of Emissions of Greenhouse Gases Rule (Chapter 173-441 WAC). Supporting changes to the Reporting Rule will also ensure that appropriate data are available.
The adopted rule applies to existing and future centralized electricity markets including the Energy Imbalance Market, the Extended Day Ahead Market, and Markets+. The rule also addresses other issues related to the reporting of greenhouse gas emissions for entities importing electricity to Washington.
Rulemaking timeline
Announcement phase (CR-101)
Filing date:
June 26, 2023
Announcement documents
Rule development phase
June 26, 2023 – Winter 2024Public input & involvement
Fourth public comment period (informal)
Jan. 23, 2024 – Feb. 15, 2024
Comment on updated draft rule language.
Read comments
Third public comment period (informal)
Nov. 8, 2023 – Nov. 27, 2023
Comment on draft rule language and how the rule should address emissions leakage.
Read comments
Second public comment period (informal)
Oct. 5, 2023 – Oct. 30, 2023 (originally Oct. 20, 2023)
Comment on the draft rule language for this rulemaking.
Read comments
First public comment period (informal)
July 25, 2023 – Aug. 25, 2023 (originally Aug. 16, 2023)
Comment on what the requirements for centralized electricity markets should be
Read comments
Ecology's meetings with stakeholders
1 Webinar information:
Register for each webinar to get your meeting ID and passcode.
To hear the webinar better or to call in only, use your phone (instead of the computer) to call 253‑215‑8782.
Rule proposal phase (CR-102)
June 27, 2024
- Proposal Notice- CR-102 form
- Proposed rule language (173-441 WAC)
- Proposed rule language (173-446 WAC)
- Preliminary Regulatory Analysis
- SEPA- Determination of Non-significance
Comment period
Comments were due by Aug. 20, 2024.
Ecology will review all comments received & plans for adoption Dec. 2024. See above for documents related to the Proposal Phase of the rulemaking.
We accepted comments in the following ways:
- Read comments
- Mail to:
For standard US Mail-
Department of Ecology
Climate Pollution Reduction Program
Gopika Patwa
PO BOX 47600
Olympia, WA 98504-7600
For Parcel Service-
Department of Ecology
Climate Pollution Reduction Program
Gopika Patwa
300 Desmond Dr SE
Lacey, WA 98503 - Attend a public hearing - see below
The hearings included a short presentation and question and answer session, followed by the opportunity to provide testimony.
Date/Time: Aug. 6 webinar recording
Aug. 8 webinar recording
Location: online (webinar)
Register for the webinar to get your meeting ID and passcode.
To hear the webinar better or to call in only, use your phone (instead of the computer) to call 253-215-8782.
Agenda: Presentation, question-and-answer session, followed by public hearing
Accessibility: To request ADA accommodation for the public hearing, email Ecology’s ADA coordinator by July 31, 2024. Or call 360-407-6831, 711 (relay service), or 877-833-6341 (TTY).
Rule adoption phase (CR-103)
Dec. 3, 2024
Jan. 3, 2025
Related links
Contact information
Gopika Patwa
Rulemaking Lead
gopika.patwa@ecy.wa.gov
360-338-2419
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Accessibility
To request ADA accommodation for disabilities, or printed materials in a format for the visually impaired, contact Ecology's ADA Coordinator by email at ecyadacoordinator@ecy.wa.gov, or call 360-407-6831. People with impaired hearing may call Washington Relay Service at 711. People with speech disability may call TTY at 877-833-6341.