The ultimate vision is virtually loss-free energy conversion and generation. Proven availability of energy-efficient distribution of electrical energy based on central and local sources. No risk of blackouts or over-supply to disrupt grids. The ‘Smart City’ is the place where millions of people live and work. The energy consumed should be precisely that needed, not influenced by oversupply, not wasted by inefficiencies, and not subject to bottlenecks in the distribution system. The vision is to have clean and healthy city environments in which energy is used intelligently.