[Avodah] Generators on Shabbos in Israel

[Ben Rothke]

I know there are those that use generators on Shabbos in Israel, AIUI,
so as not to be ne'neh from chilul shabbos.

With that, in modern electricity plants, there is so much that is
automated, it's almost on auto-pilot. So what exactly is the potential
chillul shabbos?

Based on that, shouldn't these people also draw their water before
shabbos? As water treatment plants also have workers there on shabbos.