It looks like the top-end estimate is that the Fukushima disaster may have caused up to 500 additional total lifetime deaths from cancer. Roughly 23,000 people per year died of diseases attributed to coal power plants in the United States alone from 1999-2020.
Edit: Changed "linked to" to "attributed to", because this is the estimated count of people who would not have died of disease if coal power plants were not running.
500 deaths at $12M per life is $6B. This is a small fraction of the total cost of Fukushima.
People say LNT overestimates deaths, but what they don't realize is that even if you take LNT at face value the cost of deaths from a nuclear accident isn't really that high. A regulatory regime where reactor operators that have accidents are charged the inferred cost of the expected deaths could work.
People whose metabolic reserve is low often die when you stress them.
I saw a study claiming 440 excess deaths from the Los Angeles fires. I'll make an assumption that permanently moving old and health impaired people from the Fukushima exclusion zone had a similar increase in mortality. And then a bit of looking leads me to this.
"The evacuation itself also was not without severe consequences. The accident was in the winter, and the evacuation of 840 patients or elderly people in nursing homes and health-care facilities apparently resulted in 60 immediate deaths due to hypothermia, dehydration, trauma and deterioration of serious medical conditions (Tanigawa et al 2012) and upwards of 100 deaths in subsequent month"
Fatalities per Joule of generated electricity is extremely low for nuclear power, even if you add not just Fukushima but also Chernobyl.
So if you'd scale up, and keep that level of safety, it would be fine. Even less safety would be fine. After all, we accept much less safety in eg natural gas or even solar power. (Solar power is extremely safe once running, but if you look at casualties over the lifecycle, you get a few people falling off roofs when installing residential solar power. It's a very small number, but nuclear is so safe, that the roof-fall incidents of solar are a big number by comparison.)
