I hope they hording diesel, the power provider is continuously forcing 4000MW+ load shedding/reduction, with 4+ hours of rolling blackout everyday over the entire country.
That said, I'll bet solid Swiss money that Google is aware of the electricity supply situation here and has planned/is planning around it.
A lot of businesses continue to invest in solar, I don't think a cloud provider that's carbon-conscious would leave their operations to diesel generators and mostly non-renewable electricity (https://www.eskom.co.za/dataportal/supply-side/station-build...). The link is to the supply mix over the past 7 days.
I'm South African, working remotely for a US employer. We often joke that my colleagues' broadband is 3rd world while mine is 1st world, as it seems easier to get a good fiber line here than there.