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California and Washington to Join Forces on Carbon Markets, Aiming to Cut Pollution and Raise Billions

Officials said the linked market will launch its first joint carbon auction early next year and has already raised more than $5 billion for climate projects.

  • On Wednesday, Washington officials announced completion of regulatory tweaks to link the state's carbon market with California and Quebec, as California Gov. Gavin Newsom confirmed his authorization during Climate Week in New York City.
  • Washington has operated its cap-and-invest program since 2023, requiring major emitters to buy allowances at quarterly auctions; the Climate Commitment Act was designed for this integration with California and Quebec's existing markets.
  • Linking these markets will cut an additional 45 million metric tons of climate pollution through 2045, according to Greenline Insights modeling, while the expansion aims to stabilize price spikes and increase economic efficiency.
  • Newsom described the partnership as a "West Coast offense" against federal opposition, emphasizing that broader markets lower clean technology costs; the three governments expect to launch their first joint carbon emissions auction early next year.
  • Officials hope this expanded market will attract other states like New York and Oregon, which are contemplating similar programs, as this initiative aims to drive investment and curb pollution despite national-level environmental rollbacks from the Trump administration.
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WA finishes work to link carbon markets with CA, Quebec

Everything’s set from our end – now all Washington has to do is wait.

·Spokane, United States
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ArcaMax Publishing broke the news on Wednesday, September 23, 2026.
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