By Warren Weisman, Energy Bulletin
The urban infrastructure of the post-carbon future will need to rediscover and utilize lost technologies and processes from history. Integrated waste-to-energy combined heat and power systems can meet essential needs for food, clean water, public health and sufficient electrification for elevators and public transportation in a well-planned eco-city and provide a modest amount of energy for local light industry. When considering how much energy would be available, it would be misleading to look at total city energy use as planners do with today’s centralized utilities. Instead, it would be more helpful to examine how much energy you and your family could produce yourselves with a small, household anaerobic digester and gasifier and home combined heat and power system.