9GW indeed seems improbable, impossibly huge. Less so if off-grid, run directly on global warming as this article reckons?
"At full buildout, the campus would reach 9 GW, all produced on-site through a connection to the Ruby Pipeline, a 680-mile interstate natural gas line that crosses northern Utah on its route from Wyoming to Oregon. MIDA executive director Paul Morris told county commissioners that the facility “will not take one electron” from the existing grid"
https://www.tomshardware.com/tech-industry/kevin-o-learys-9-gw-utah-data-center-campus-approved