Seeing a datacenter proposal in the news come in at 1.3GW was very sobering for me. I spent a lot of time in grad school on the campus of a large nuclear plant, and it turns out one nuclear core is good for about 0.9GW of electricity (or 2.9GW of heat).
A single site consuming more than the entire electrical output of a nuclear core, considering the sheer size and scale of that reactor and its supporting infrastructure and workforce, is just boggling to my mind. It's literally billions of dollars just to feed that one site, if they're being accurate in their proposal.