‘It’s going to be a scramble.’ What’s next for EPA’s power plant rule.

EPA finalized the toughest carbon rule in history Thursday for fossil fuel generation.

The standards for new natural gas turbines and existing coal-fired power plants could slash emissions from the highest-emitting units by 90 percent by 2032. The rule would be the first of its kind to take effect.

If it isn’t killed first.

With the rule’s Howard University debut in the rearview mirror, focus now turns to whether the Biden administration can fend off challenges to the rule on Capitol Hill and in the courts. After all, two previous administrations also wrote rules to limit power plant pollution — only to run into legal trouble.