(Mis)Estimating Regulatory Costs

In describing cost-benefit analysis to students, I've often told them that the "cost" side of the equation is pretty simple. And it does seem simple: just get some engineers to figure out how industry can comply and run some spreadsheets of the costs. But this seemingly simple calculation turns out to be riddled with uncertainties, particularly when you're talking about regulating the energy industry. Those uncertainties need more attention in designing regulations.