Going on a tangent: I think fusion is pretty much useless this century. We already have energy generation technology that has high capital costs and low running costs: it's called nuclear fission and works fairly well.

Fission hasn't exactly taken the world by storm.

There are a few nice advantages fusion has, but they are more important once we want to reach the stars as far as I can tell; not this century on this planet.

But I'm just an armchair analyst. You probably have a much better understanding.