The EPA's new power plant proposal is a critical step toward achieving healthier communities, building a vibrant, clean energy economy, and attaining U.S. climate goals. The U.S. Environmental Protection Agency has announced a new proposed regulation governing emissions from fossil-fueled power plants. This rule could accelerate current trends in the U.S. power sector toward a cleaner and lower-emissions electricity generation mix, primarily if the rule requires carbon capture technology for new and existing gas power plants and existing coal plants. In doing this, in line with recent analyses we have done for U.S. decarbonization pathways, it could also add another critical policy driver for achieving the overall U.S. climate targets of a 50-52% economy-wide emissions reduction by 2030 and a net zero emissions economy by 2050.