I think Helion is most promising for two reasons. 1. Even if the more traditional fusion power plants manage to generate the plasma itself in a device that’s n

I think Helion is most promising for two reasons. 1. Even if the more traditional fusion power plants manage to generate the plasma itself in a device that’s not too expensive (big if) it seems that just the heat exchange mechanism itself would be extremely complicated and expensive. And since they’re thermal power plants you’re limited in where you can put them and how big they must be to be economical. 2. As CO2 emissions come down, I think there will be some focus on thermal power plants contribution to global warming. Helion will still be adding heat to the planet that wasn’t there before, but there will be less heat for a given amount of electric energy. It’s also not going to rely on dumping all that heat in a river. I don’t know if Helion is feasible. But it feels like it’s the only technology that could be feasible.