bangs head on table Energy efficiency/load redirection is not the same as energy storage. Heat pumps water heaters, with good insulation is about 3-3.8 times

bangs head on table Energy efficiency/load redirection is not the same as energy storage. Heat pumps water heaters, with good insulation is about 3-3.8 times more efficient than straight electric heating. However keeping hot water hanging around isn't all that efficient.