California Governor Gavin Newsom has formally authorized the state to begin the process of linking its Cap-and-Invest program with Washington State's carbon market. The move, announced during Climate Week NYC, builds on California's existing linkage with Quebec and could create a larger, more stable market for emissions allowances. California law requires the governor to make specific findings about the partner market before the Air Resources Board can proceed, and Newsom took that step on September 21, 2026. If completed, the linkage would allow entities in both states to use each other's compliance instruments, potentially lowering the cost of meeting emissions targets. California's program has generated $37 billion for climate investments and delivered $16 billion in utility bill credits since 2013. The state says the expansion will support cleaner transportation, affordable housing, and wildfire resilience, while maintaining a path toward its 2030 and 2045 climate goals. The next step is a public regulatory process led by CARB.
