Well, in principle, we know how to build nuclear. We're slow at it, it's expensive, but it's sort of off-the-shelf. Long term energy storage, by batter or othe

Well, in principle, we know how to build nuclear. We're slow at it, it's expensive, but it's sort of off-the-shelf. Long term energy storage, by batter or otherwise..? I don't believe anyone has done it. We're not talking about maybe smoothing out energy supply/demand over 24h, were talking producing energy in the summer for the winter.