I imagine it'd be a lot easier to get a giant datacenter through the queue and connected if said datacenter also generated more than it's own needs with solar and grid scale battery. You'd essentially be asking the grid to act as a backup and sink for spare generation. Avoiding a need for central generation capacity buildout.
> I imagine it'd be a lot easier to get a giant datacenter through the queue and connected if said datacenter also generated more than it's own needs
You'd be wrong. Projects get evaluated FIFO, and each has to do a grid impact study. Data centers are buying other generation projects to get a better position in line. This is all the result of bad regulation.