That NAM study, which has cited uncritically by dozens of media outlets, is the sole foundation on which the right bases these claims. It has been debunked up one side and down the other . The way it calculates costs is arbitrary and insane (seriously, click the link and read the details). It doesn’t include benefits at all. Its assumptions and modeling are designed to produce the maximum possible cost. Anyone familiar with previous air rules, or technology, or the electricity sector, or math, knows it’s a joke. NAM is notorious for commissioning “studies” designed to produce political advantageous results. But for some reason it never seems to lose any credibility with the media. It’s an almost unbroken record of predictive failure, yet each new study — 100 percent of which are about the economic doom sure to follow any regulation — is greeted with renewed credulity.