Itll take another thousand square miles for the back-up generators and diesel fuel storage. Brilliant!
They can split it up into 4 places so if 1 or 2 of the solar places shut down, there is still 2 other backup places intact
They may still want to have the 4 places geographically diverse, to keep terrorists from having an easy way of shutting the grid down. Remember: you can never have 100% security protection, only to secure it to the point where the enemy calculates that it's not worth the effort.
“They can split it up into 4 places so if 1 or 2 of the solar places shut down, there is still 2 other backup places intact “
Do you have the slightest clue how you would wire te massive interconnect to make such a backup grid work? Like building the pyramids.