Yes, that number is absurd, and data centers will certainly need to make do with less, regardless of actual requirements.
Texas is [d]oing its best to build as many datacenters & power plants as possible. They were describing it as "Texas will have more datacenters than anyplace else in the world." This was public radio, but everybody's taking a hit on the ol' AI pipe nowadays.
At cost of 0.01 per kwh would be 21 billion... And electricity generally is not that cheap everything considered...