They're asking the wrong question. Can you make households self-sufficient with solar? Well, it'll probably work. But also, it's probably expensive. So the qu

They're asking the wrong question. Can you make households self-sufficient with solar? Well, it'll probably work. But also, it's probably expensive. So the question is: should you make households self-sufficient? If you look into the renewable intermittency issue, some of the best and cheapest solutions are not storage, and are not possible in a self-sufficient setting. Those include a combination of wind and solar (they complement somewhat, because days with lots of wind are often days with little sun), grid improvements (transporting electricity is almost always more efficient than storing it), flexible demands in industry etc. Yeah, there is still a need for some expensive storage, but you should only do that if you have no better alternative. The better solutions are on a grid level.