Yeah that is problem. It did just make me think though: I read recently about a UK project to build a solar farm in the Moroccan desert the size of greater London and lay undersea cables all the way back to southwest England. They claim it will be half the cost of the new Hinkley C reactor, which is just up the road and that includes building from scratch the ship to lay the cables. Now, instead of having this solar farm to the south, in a similar timezone, what if it could be to the east or west? There is already an international grid in this part of the world, so perhaps if it was extended, there could be renewable energy coming in from wherever, whenever it was being produced. The sun is usually out and the wind blowing somewhere. That would reduce the burden of storage. It would also require a high level of cooperation and trust, which has its pros and cons.