Both solar and wind energy have fatal flaws – solar stops when the sun goes down or if a cloud blocks the sun; wind fails if the wind is too strong or too weak. But every day we hear of some fantastic and expensive plan to keep the lights on when these unreliable energy twins stop work. The latest thought bubble from Mr Bowen (the Australian Minister for Generating Blackouts) is for him to be able to drain the energy from electric car batteries to back up a failing grid. He suggests that batteries could also power the house or sell energy into the grid. (They are already scheming on how to use smart technology to prevent homeowners from charging their own batteries when flicker power is fading.)