It is not about blackouts but about the risk induced by a nuclear plant in a warzone.

That's what International Atomic Energy Agency's (UN agency in charge of civilian nuclear) boss said about it: "Director General Grossi reiterated his deep concern about the apparent increased use of drones near nuclear power plants since early this year, saying such weaponry posed a clear risk to nuclear safety and security"

"any military attack on a nuclear site – with or without drones – jeopardizes nuclear safety and must stop immediately"

https://www.iaea.org/newscenter/pressreleases/update-303-iae...

> It is not about blackouts but about the risk induced by a nuclear plant in a warzone.

What concrete risks are those?

And of course the IEAE is concerned about nuclear safety. That's their job.