Not only is it a solved problem (Tesla, grid.io, ecobee, nest have time of use, if not community savings) but it is solved by electric car batteries preferring

Not only is it a solved problem (Tesla, grid.io, ecobee, nest have time of use, if not community savings) but it is solved by electric car batteries preferring slow charge, electric cars having range beyond daily commutes, some people charging their cars at commercial connections some of the time, and everybody not having the exact same schedule.