There are a bunch of Small Modular Reactor companies (Nuscale is probably the most well known in the media but venerable Westinghouse has one too). Elon Musk mi

There are a bunch of Small Modular Reactor companies (Nuscale is probably the most well known in the media but venerable Westinghouse has one too). Elon Musk might be the world's foremost genius at handling government-related businesses (i.e. identifying where a startup can unblock government leaders who want things done but can't use existing orgs - electric / space) and he's stayed away from nuclear. I suspect a SpaceX analogue cannot be built in this field. Part of why renewables are beating SMR companies is incrementality. You can build and expand power projects and scale up from small installations up high. It's surprisingly hard to find economical places to build this in the US. Even geothermal in completely uninhabitable places gets met with opposition from groups like the Burning Man guys. I'm sure we'll conquer these regulatory things within the next half century, but until then we're in trouble and insistent on walking the precipice.