You mean maybe like a shipping container sized reactor that is simply stacked (and replaced / defueled for maintenance)? Like one that can have its liquid fuel

You mean maybe like a shipping container sized reactor that is simply stacked (and replaced / defueled for maintenance)? Like one that can have its liquid fuel removed by just piping? That's very development was done using a closet-sized reactor that could be easily powered up and powered down so it CAN scale with demand? Whose design is inherently meltdown-proof? Which uses almost all its fuel so there's no nuclear waste to transport? That can breed its fuel from Thorium? The time to invest in this was 20 years ago. Certainly the viability of nuclear missed the boat 10 years ago. Nuclear will have to wait for solar/wind/battery and other grid levelling alternatives (home solar + storage, EVs-as-grid-batteries) to mature and develop before they have a stable economic target. Then nuclear needs to figure out how to make that target. I think it is a LFTR, but who knows. I don't think solid fuel rods are the way. Too much waste, too much danger inherent to the fuel packaging. And seriously, "the institute for progress"? The nuclear industry is so out of touch their marketing and lobbying is 30 years out of date.