[danpalmer]

I think you might be over-estimating solar or under estimating data center power usage. A quick search suggests that a data center consumes between 150W and 750W per square foot of building space. Solar is roughly 20W per square foot.

Even if you assume 1 floor and a roof covered entirely in solar and the lower end of the power estimate, that's only covering 13% of the power requirements. If you look at the higher end of power estimates and assume a 3 storey data center with 50% of the roof covered, a more realistic set of numbers for a hyperscaler, that's only 0.4%.

As for being synergistic for emergency power, batteries would help here, but peak power usage is probably around dusk when solar won't be that useful but when power is most likely to be disrupted.

[phil21]

Those solar production numbers are exceedingly exaggerated. You need to add capacity factor to the solar install. Multiply your solar production by 0.2 to 0.3 or so and you’ll be in a better ballpark range.

Peak power usage for large scale facilities is not much different than off peak. Most megawatt plus builds I’ve been part of have less than 10% difference between peak and valley in terms of watts used. Perhaps the hyperscalers see a much larger difference but I have my doubts.