[thrower123]

I would be very leery of a datacenter that didn't have their own on-site generation plants that can be guaranteed to supply power in the event of a grid failure. If a substation goes down on a cloudy day, I would hope that they have a big diesel generator or gas plant on standby regardless.

[AnthonyMouse]

The solution to that is to have enough solar to generate the power you need even on cloudy days, then sell the excess to the power company on normal days.