The 7.65GW datacenter Amazon wants to make, would need about 155,000 acres to have a 4x provisioned solar array if they wanted to operate it all day off solar based of the US’s largest solar farm. That doesnt account for land space for storage. Also a 4x over provision probably isnt truly enough for something like this to reliably operate off solar only.
Itd be great to make some solar though for daytime hours even if trying to store the ridiculous amount of power required is its own insane problem and not worth it.