alt Hacker News> How long does a solar farm take?
24–48 months, but for a data center that has to run 24/7 you need to also build a gas power plant.
https://www.pvfarm.io/blog/utility-scale-solar-project-devel...
https://globalenergymonitor.org/research/betting-big-data-ce...
Or use batteries.
Also residential and industrial use will be lower at night. So the existing grid supply may also be enough.