"Forty percent of American energy use today comes from building operations. We have the technology today to reduce this number to zero demonstrated by the nineteen remarkable net zero energy buildings contained in The Power of Zero. Net zero energy buildings use no more energy than they generate over the course of a year. These buildings offer a powerful antidote to the myriad of problems and finite limitations associated with fossil fuel use climate change, ocean acidification, extraction impacts, defending energy supplies, and more."--Publisher's description.