Info from the mod: this topic has been split from a different discussion, so it kind of starts without context
Actually nuclear power never made sense from a purely economical view if no nuclear arsenal is involved.
Nuclear power is just damn expensive once you have to decomission the plant.
As a process engineer I had the chance to get the hands on a report, where all the costs of the French civilian nuclear program, as well as future investments needed to maintain the power plants were listed (except military costs to maintain the right governments in place where the mining and transit of uranium takes place). Then you could divide production by this costs and found a substantial higher number than any other form of energy…
Reasons for why nuclear took such a big role in France (>70%) were mostly political, military, and self-interest.