Part I. End of demand growth is within reach. Will energy efficiency make a difference? / Fereidoon P. Sioshansi with contributions from Ahmad Faruqui and Gregory Wikler -- Utility energy efficiency programs : lessons from the past, opportunities for the future / Steven Nadel -- A global perspective on the long-term impact of increased energy efficiency / Paul H.L. Nillesen, Robert C.G. Haffner and Fatih Cemil Ozbugday -- Carpe diem : why retail electricity pricing must change now / Allan Schurr and Steven Hauser -- Is there an energy efficiency gap? / Hunt Allcott and Michael Greenstone -- Part II. The frustratingly slow evolution of energy efficiency. Making cost-effective energy efficiency fit utility business models : why has it taken so long? / Ralph Cavanagh -- The evolution of demand-side management in the United States / Frank A. Felder -- China : energy efficiency where it really matters / Mark Levine, Nan Zhou, David Fridley, Lynn Price and Nina Zheng -- Rapid growth at what cost? : impact of energy efficiency policies in developing economies / Youngho Chang and Yanfei Li -- Part III. Case studies of low-energy communities and projects. The prospect of zero net energy buildings in the United States / Nicholas B. Rajkovich, William C. Miller and Roland J. Risser -- What if this actually works? : implementing California's zero net energy goals / Anna M. LaRue, Noelle C. Cole and Peter W. Turnbull -- Zero net energy at a community scale : UC Davis West Village / Stephen M. Wheeler and Robert B. Segar -- Crouching demand, hidden peaks : what's driving electricity consumption in Sydney? / Robert Smith -- From consumer to prosumer : Netherland's powermatching city shows the way / Stefanie Kesting and Frits Bliek -- Back to basics : enhancing efficiency in the generation and delivery of electricity / Clark W. Gellings -- Smarter demand response in RTO markets : the evolution toward price responsive demand in PJM / Stuart Bresler, Paul Centolella, Susan Covino and Paul Sotkiewicz -- Part IV. Opportunities and remaining obstacles. Shifting demand : from the economic imperative of energy efficiency to business models that engage and empower consumers / John A. "Skip" Laitner, Matthew T. McDonnell and Heidi M. Keller -- What comes after the low-hanging fruit? / Glenn Platt, Daniel Rowe and Josh Wall -- Energy convergence : integrating increased efficiency with increased penetration of renewable generation / Ren Anderson, Dave Mooney and Steven Hauser -- Energy efficiency finance, a silver bullet amid the buckshot? / Theodore G. Hesser -- The holy grail : consumer response to energy information / Chris King and Jessica Stromback -- Trading in energy efficiency : a market-based solution to market failure, or just yet another market failure? / Iain MacGill, Stephen Healy and Rob Passey -- The ultimate challenge : getting consumers engaged in energy efficiency / Alex Laskey and Bruce Syler.