In the 20 months since Congress passed the Inflation Reduction Act, which offered billions in subsidies for clean energy projects and electric vehicles, President Joe Biden has sought to supplement those climate carrots with a few key sticks. The Environmental Protection Agency has in recent months raced to roll them out, in the form of key regulations that penalize carbon emissions from power plants, oil wells, and passenger cars, under an effort to finalize new rules before the election.
The administration on Friday finalized the last of those rules, a set of strict standards for carbon emissions from big rigs and other heavy-duty vehicles. This regulation has been among the most controversial Biden climate rules, in large part because it pushes up against the limits of available technology: Freight companies and trucking industry advocates have…