This report summarizes the content and themes of the ACEEE Seventh National Conference on Energy Efficiency as a Resource, held in Nashville, Tennessee from September 22 to 24, 2013, per the agreement with the U.S. Department of Energy. The successful conference demonstrated the progress of energy efficiency as a resource in the Southeast and leading regions of the country. Speakers and sessions examined progress and energy savings achievements, and how programs in the field are evolving past previous limits towards greater savings and participation. Challenges and policy issues arising after a decade of growth were addressed in-depth.