I&#x27;m a fan of aneutronic fusion but lacking that I&#x27;d be pretty happy with molten salt reactors, like what Transatomic, ThorCon, Terrestrial Energy, and Moltex are doing. They&#x27;d be inherently safe, proliferation-resistant, and produce very little long-term waste. These aren&#x27;t commercially available yet but they just need straightforward development, not any fundamental breakthroughs.