Buying “renewable energy certificates” is a way for companies to claim to reach their renewable energy goals—instead of, say, putting solar panels on their roof. One of the most enthusiastic consumers of RECs is the federal government. But is this ostensibly environmentally-friendly system actually standing in the way of true sustainability?  Guest: Najib Aminy, producer for Reveal. If you enjoy this show, please consider signing up for Slate Plus. Slate Plus members get benefits like zero ads on any Slate podcast, bonus episodes of shows like Slow Burn and Dear Prudence—and you’ll be supporting the work we do here on What Next. Sign up now at slate.com/whatnextplus to help support our work. Learn more about your ad choices. Visit megaphone.fm/adchoices