Telsa and SolarCity are working on a residential battery that might let people drop off the electric grid completely. The utilities are sweating.
Earlier this week, during a disappointing Tesla earnings call, Elon Musk mentioned in passing that he’d be producing a stationary battery for powering the home in the next few months. It sounded like a throwaway side project from someone who’s never seen a side project he doesn’t like. But it’s a very smart move, and one that’s more central to Musk’s ambitions than it might seem.
via Why Tesla's battery for your home should terrify utilities | The Verge.