So far, nine of the 17 U.S. Clean Air Act states have committed to Advanced Clean Cars II: California, Maryland, Massachusetts, New Jersey, New York, Oregon, Vermont, Virginia and Washington. Others, such as Delaware and Rhode Island, have made statements about plans to adopt the rule but have not begun a formal legislative process, said Dan O’Brien, modeling analyst for Energy Innovation.
Drew Veysey, a senior associate at RMI, expects all 17 of the states that follow the U.S. Clean Air Act to adopt at least part of the rule.
“It is a very premiere climate policy, so [for] any state that is serious about reducing greenhouse gas emissions, their agencies will be considering adopting it,” he said.
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