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The report identifies energy efficiency as the most cost-effective strategy for cutting U.S. carbon emissions, focusing on the industrial and building sectors which together account for two-thirds of U.S. carbon emissions. It details technical opportunities such as combined-heat-and-power (CHP) systems, building envelope improvements, and high-efficiency appliances. The document proposes a 'Blueprint' of policies—including efficiency standards, resource standards (EERS), and updated building codes—that could reduce total U.S. energy consumption by 29 percent by 2030. It highlights that while technical potential is high, barriers such as 'split incentives' and high up-front costs persist, requiring coordinated federal and state intervention.