Comments on linking carbon markets by May 15 2023

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Share your comments on linking carbon markets by May 15

We want to hear your input on whether you think connecting to other carbon markets would be beneficial to Washington. We will use your input to inform our decision on whether to pursue linkage and our analysis of the linkage criteria. Please share your comments with us by May 15, 2023. 

We offer free language services about our programs and services for people whose primary language is not English. To request translation or an interpreter contact or 425-466-5358.

This is a complex topic, so we encourage you to take your time reviewing the information on the cap-and-invest linkage webpage and the topics and instructions for public input document.

Ways to engage

We are providing multiple options for sharing your input.

  • Attend an online listening session on March 16March 29, or April 18, 2023
  • Share your comments through our new online survey. We encourage you to read and think about the survey questions before you start the survey.
  • Email comments to:
  • Leave a voice mail at: 425-466-5358
  • Mail comments to: Stephanie Potts, WA Dept. of Ecology – Air Quality Program, P.O. Box 47600, Olympia, WA 98504-7600


Established by the Climate Commitment Act (CCA) in 2021, Washington’s cap-and-invest program is a comprehensive, market-based program designed to reduce carbon pollution and achieve the state’s greenhouse gas limits. The CCA directs Ecology to evaluate whether to link Washington’s program with those of other jurisdictions and provides specific criteria that must be met to do so. Ecology is starting the process to explore linking with California and Québec.

If Washington, California, and Québec each decide to pursue linking, the three jurisdictions will begin negotiating a linkage agreement and revising their programs, as needed, in order to align them.

At this time, we cannot predict if or when we would enter into a linkage agreement with California and Québec. However, we anticipate that the process would take several years, so Washington’s program would not be linked until 2025 or later.

To learn more

These resources are a good place to start:

For additional background:

Stephanie Potts (she/her)

Cap-and-Invest Program Linkage Planner