“This book offers a careful and well-structured examination of the energy efficiency gap, combining conceptual analysis, empirical evidence, and policy discussion. It will interest researchers in energy and environmental economics as well as policymakers concerned with efficiency policy.” — Thomas Sterner, Professor of Environmental Economics, University of Gothenburg“This book shows that the energy efficiency gap is not only a technological or engineering problem. It is also about how consumers make decisions, how institutions shape those decisions, and how policy can align private behavior with broader social objectives.” — Signe Krarup, Head of Division, Climate and Energy Policy, Technical University of Denmark