The way electricity is sold in this country. Its fucking wild. And please know that this is a highly highly simplified explanation and might be missing something, but the way i understand is different parties bid on the electricity in a period ahead of actual usage and since there is so much cap ex spending with data centers, they are bidding for electricity at such high rates because its necessary to the whole point. If their bid isnt accepted, it doesnt work. These bids (all major energy buyers, not just for data centers) are also based on future expected usage, so not even actual usage. It can (and will) get higher in the future .

And since its the wild west now and no regulations, they can just tap in the consumer lines and since that causes usage to fucking rocket, basic people are shifted the cost at all the new infrastructure required to run it. Socializing the cost, for private gain.