It took Washington state more than a decade to put a price on carbon pollution. The effort to make corporations pay for the greenhouse gases they produce started in 2009 with a string of failed bills in the legislature. Frustrated, climate advocates in Washington took the idea directly to voters, putting initiatives on the ballot in 2016 and again in 2018, but both ballot measures flopped — the first defeated by infighting among environmentalists, the second by a $30 million publicity campaign paid for by oil money.
So it was a surprise when the state legislature finally managed to pass a cap-and-trade program in 2021, requiring that Washington slash its carbon emissions nearly in half by 2030, using 1990 levels as the baseline. Even more surprising, perhaps, was that the law was supported by BP, the same oil giant that had spent $13 million to kill…