It mainly is the output, and we've had nuclear tech for decades. We could have built enough to go 100% green already and I don't think at the moment we have the

It mainly is the output, and we've had nuclear tech for decades. We could have built enough to go 100% green already and I don't think at the moment we have the necessary tech for wind and solar to satisfy everything going electric, let alone the current consumption. If wind and solar were cheap and reliable, people would have switched already.