There’s a lot of dudes on a lot of roofs for solar. A lot of electrical work done, maybe by electricians, probably by mildly upskilled roofers.
I would be highly skeptical that solar is safer than nuclear. There’s just so much poorly regulated low skill low accountability construction work going on keeping it all running.
Maybe the figures are for large-scale power-grid solar, or something?
(I share your suspicion, though. And the figures being used for nuclear seem too high to me; e.g., no one is building nuclear power facilities as dangerous as Chernobyl any more, so far as I know.)
I would be highly skeptical that solar is safer than nuclear. There’s just so much poorly regulated low skill low accountability construction work going on keeping it all running.