The EPA weakens its own case for clean air standards.

For years, EPA analysts have cast a wide net to evaluate the benefits of potential regulations. But when the agency rewrote the Mercury  and Air Toxic Standards on Thursday, POLITICO’s Alex reported that it was also taking a narrower approach to future cost-benefit analyses. Plus, FERC holds its position on keeping renewable and nuclear energies out of the country’s largest capacity market. Kelsey Tamborrino is a Politico Energy reporter.Irene Noguchi is the executive producer of Politico's audio department.Jenny Ament is the senior producer of Politico's audio department.Carlos Prieto is a Politico podcast producer. Learn more about your ad choices. Visit megaphone.fm/adchoices