While neat, this is not self-sustaining

it's taking more energy to power it than you're getting out of it. (You can build a fusion device on your garage if you're so inclined, though obviously this is much neater than that!)

One viewpoint is that we'll never get clean energy from these devices, not because they won't work, but because you get a lot of neutrons out of these devices. And what do we do with neutrons? We either bash them into lead and heat stuff up (boring and not a lot of energy), or we use them to breed fissile material, which is a lot more energetically favorable. So basically, the economically sound thing to do is to use your fusion reactor to power your relatively conventional fission reactor. Which is still way better than fossil fuels IMHO, so that's something.

That is one technology that I don't care if China steals secrets to make it happen faster.

0 theoretical hope for fusion energy to ever provide electricity under 30c/kwh. These are hot plasma experiments, which could be used to produce mass HHO from water vapour at just 2200C-3000C, even if endothermic. Can get energy from concentrated solar mirrors or just PV solar if plasma is used. Cooling magnets is a huge energy drain. HHO provide the highest turbine energy gain, though a net gain pathway is just slightly more in reach than fusion.

Tony Stark was able to build this in a cave!

You know instead of the artificial sun we could use the real one no? I still think fusion is a good investment on the skill tree but not for consumer energy. Also can someone explain why we use solar panels instead of mirrors that heat up water and spin turbines? Almost every other method of producing energy uses that and from my understanding its more efficient and probably cheaper.