The Environmental Protection Agency will unveil long-awaited climate change rules for new power plants tomorrow.

The measure is expected to require future coal plants to capture a significant amount of their carbon emissions.

The rules are a central piece of the White House climate agenda that’s under heavy attack from Republicans and industry groups.

EPA Administrator Gina McCarthy will make the case for the standards at a National Press Club speech Friday morning.
Green groups are touting the rules and seeking to score a preemptive strike against GOP efforts to block them in Congress.

“Any attempts by Congress to block implementation of these limits would go against the majority of Americans who support these common sense steps and would only benefit the country’s biggest polluters,” said League of Conservation Voters President Gene Karpinski in a statement.