I think the IEA chart looks into where the energy began, not what it was used for. The 50% number rings true to me, at least for the heating in cold winters. As for summers, cooling is a heat issue as well, so that’s where much of the energy is spent.

And nuclear cant possibly be built in time, so I guess we are screwed. Don’t let perfect stand in the way of good. Doing nothing is not an option.

Oh, by all means. Build nuclear to your heart’s delight, but in the meantime we need to build wind, solar and water as well.

The part that annoys me the most are the ones that think that it is either or. It’s not. It’s as much as possible as fast as possible to replace as much fossil in total volume as possible.