138.5 announced gigawatts: 55 giant AI campuses now dot 23 states, and a third of that power points at Texas and Ohio

Asked:

map every giant AI datacenter in the US, sized by gigawatts, and show who's building it

A best-effort census, as of 31 August 2026, of publicly announced US AI/HPC data-center campuses with at least 1.0 GW of ultimate site-level capacity: 55 campuses across 23 states, totaling about 138.5 GW of announced full-build capacity — nameplate at completion, not current load. Texas alone holds 15 campuses and about 34.5 GW.

Every ≥1 GW campus, sized by announced capacity

operational / expanding building / under construction announced / planned proposed / exploring circle area ∝ gigawatts · pins approximate for county-level sites

Texas is the biggest concentration — 15 campuses, ~34.5 GW — led by the 11 GW Project Matador / HyperGrid in Amarillo by Fermi America. datacenterdynamics.com

OpenAI is the named customer behind ~23.4 GW across nine campuses, including the 10 GW PORTS Technology Campus SB Energy is building in Pike County, Ohio. stocktitan.net

Microsoft is tied to ~25 GW as a customer — most of it built by others, like O’Leary Digital’s 9 GW Stratos in Utah and Nscale’s 8 GW Monarch campus in West Virginia. datacenterdynamics.com

Only 8 of the 55 campuses are operational or expanding today; 23 are merely announced or planned, and 5 are just proposed — 52.9 GW has no publicly named AI customer at all. datacenterindex.ai

Named AI customers vs. undisclosed capacity

Announced GW by named AI customer or tenant. Grey = no customer disclosed publicly, which does not mean no tenant.

All 55 campuses, ranked by announced gigawatts

#	Project	Location	GW	Builder / developer	AI customer	Status	Evidence	Source

Method: best-effort public census as of 2026-08-31 of announced US AI/HPC data-center campuses with ≥1.0 GW ultimate site-level capacity; 55 rows, one per physical campus. GW figures are nameplate full-build capacity, not current simultaneous load — do not sum them as near-term grid demand. Statuses range from proposed to operational; announcements and capacities change. Blank customer means undisclosed. Evidence strength is a research-confidence heuristic; medium and watchlist entries are marked and are less certain. Some localities are county- or parish-level, so pins are approximate. Excluded: multi-site portfolios, power plants without an identified campus, and sites without a public GW figure.