I have a modest set of solar panels on an entirely ordinary house in suburban London. On average they generate about 3,800kWh per year. We also use about 3,800kWh of electricity each year. Obviously, we can't use all the power produced over summer and we need to buy power in winter. So here's my question: How big a battery would we need in order to be completely self-sufficient? Background …
Stop moving the goal post, your claim was no one was building nuclear power stations, clearly they are building nuclear power stations.
In this entire thread, no one has ever made the claim that they were easy or quick to build.