Chapter 173-444 WAC

In 2019, the governor signed the Washington Clean Energy Transformation Act (Chapter 19.405 RCW), which begins a transition away from electricity sources that depend on fossil fuels. The Act requires that by 2030, at least 80 percent of the electricity used in Washington must come from sources that are either renewable or do not emit greenhouse gases (non-emitting sources). Greenhouse gas emissions from the remaining electricity must be reduced somewhere else. This is called "offsetting." By 2045, all electricity used in Washington must come from sources that are either renewable or do not emit greenhouse gases.

Ecology is starting rulemaking for Chapter 173-444 WAC, Clean Energy Transformation Rule to implement parts of the Clean Energy Transformation Act assigned to Ecology. The rulemaking will:

  • Establish a process to determine what types of energy transformation projects may be eligible to meet the Clean Energy Transformation Act.
  • Establish a process and requirements to develop standards, methodologies, and procedures to evaluate energy transformation projects.
  • Provide greenhouse gas emission factors for electricity.

Rulemaking timeline


Announcement phase (CR-101)

Filing date:
Oct. 18, 2019

Announcement documents

Rule development phase

Oct. 18, 2019 – Summer 2020

Public input & involvement

Public comment period (informal)
Dec. 20, 2019 – April 20, 2020; extended to May 25, 2020

Comment on the draft rule and meeting materials.  Submit your comments online and read others' comments.

Ecology's meetings with stakeholders

Date Documents Location
Jan. 14, 2020
1:30 p.m. – 4:30 p.m.
Draft rule language
Meeting summary
Ecology, Lacey (map to location)
webinar *
Feb. 12, 2020
1:30 p.m. – 4:30 p.m
Draft rule outline
Economic questions
Meeting summary
Ecology, Lacey (map to location)
webinar *

March 16, 2020
1:30 p.m. – 4 p.m.

Meeting summary
in-person meeting CANCELLED (reduce spread of coronavirus)
webinar *
April 9, 2020
9 a.m. – noon
webinar *
May 2020 none yet webinar *

* Webinar information:
   Register for each webinar to get your access code and password.
   To hear the webinar better, use your phone (instead of the computer) to call 1-855-929-3239.

Additional languages

Español (Spanish) 中文 (Chinese) Tiếng Việt (Vietnamese) 한국어 (Korean) русский (Russian)


To request ADA accommodation for disabilities, or printed materials in a format for the visually impaired, contact Ecology's ADA Coordinator by email at, 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.