Power is not the most expensive part of data center lifetime cost; especially these days when you're filling them with several billion dollars of nvidia chips. It's still an important consideration of course, but not the only one.
A H100 cost 30k when new, and uses 500W of power.
500W for a year is about 4500kWh, which at $0.10/kWh is $450/year if run at full utilization (unrealistic).
TCO of an AI data center should be entirely dominated by capex depreciation.