My power bill has gone up significantly (in Chicago) because we have a really good grid, and relatively cheap power production costs due to investments our tax dollars have gone towards (fun fact 25% of illinois power comes from nuclear, the highest in the country).
Now, I and all my neighbors are being financially punished for these investments, because so many data centers are being built out due to this infrastructure. I have friends who are engineers at the power distribution company who are denied raises and putting in 80+ hour weeks without over time.
I say all this, not to diminish the low income Americans bearing the cost of these data centers, but to point out that its all of us. Its insane how few people are actually benefiting from this, and how simply taxing these data centers appropriately would fix it.
I am not familiar with the actual contracts these companies have, nor the tax policies and breaks they are getting, but its clear to me they are not paying enough. I wouldn't be surprised if these servers are over clocked to hell and back simply because the water and power is cheap.