Emmett Institute faculty members submitted a comment letter on the U.S. Department of Energy’s Notice of Proposed Rulemaking on Energy Conservation Standards for General Service Lamps. The authors argue that the Department of Energy’s efforts to narrow the reach of lightbulb efficiency standards would sacrifice consumer savings and environmental protection in a misguided attempt to thwart application of energy efficiency standards the market has already embraced, all in direct contravention of legislative mandates pursuant to the Energy Policy and Conservation Act.