HELIOSOpen AI Infrastructure Observatory
Static snapshot. This site serves two different things: 1,853 data centres reported by OpenStreetMap contributors nationwide, and 13 sites Helios infers from Arizona parcel records, exported on July 29, 2026. The first is a map of what has been recorded; the second is an argued hypothesis with an evidence chain. This is a point-in-time export, not a live view. See meta.json or the methodology.

TX

State · 226 data centres recorded in OpenStreetMap

Mapped facilities
226
on the map today
Floor area
2.31
km² across 201 buildings
Share of US load
2,534
MW, inferred upper bound
Water
5.51
million gal/day, inferred
21 of these 226 are not mapped as buildings, so no power figure is estimated for them. 21 are campus boundaries covering 4.35 km² of land. The megawatt figure above divides a national total by building floor area, and the area of a land parcel is not floor area. A site still being built consumed none of the electricity that total measures. Both are counted here and left out of the estimate rather than folded into it, so this region's load is understated by however much those represent.

When these appeared on the map

observed, not surveyed
076151201620182019202020212023202420252026
Data centres recorded in OpenStreetMap at the end of each month. The hatched stretch is before 2017-01, when telecom=data_center was not yet in common use — the near-zero readings there describe the tag, not the country. This is a count of what has been mapped, and OpenStreetMap carries no construction dates.
75 of these 226 facilities do not appear in the curve. The chart counts facilities whose appearance was observed in OpenStreetMap's edit history; one mapped before 2012 has no creation edit to observe. The two numbers answer different questions — how many are on the map now, and how many were watched arriving — and neither is wrong.

What the grid here looks like

reported by OSM contributors
Substations
5,388
69 kV and above
Bulk substations
645
230 kV and above
Highest voltage
500
kV, present in this state
Generating capacity
183,988
MW across 1,005 plants

A facility drawing hundreds of megawatts connects at bulk transmission voltage, so the second figure matters more than the first: forty 69 kV yards are not a substitute for one 500 kV substation. 234 of the plants here carry no capacity tag, so the megawatt total is a floor rather than the region's output.

Proximity is not connection. Nothing here shows that any facility has contracted power from any of these substations. That gets settled in interconnection filings Helios cannot read, and in several regions those queues now run for years. A county showing no substations may have none mapped rather than none standing.

Largest named mapped records

by mapped area
NameOperatorMapped asMapped area m²Share MWFirst mapped
Riot Corsiananot recordedCampus boundary1,088,627—2025-11-14
Microsoft Texas Research Park CampusMicrosoftCampus boundary672,739—2017-09-04
Argo Data Centernot recordedCampus boundary589,339—2026-03-19
Riot Rockdalenot recordedCampus boundary404,871—2025-11-14
Core Scientific COT2 Data Centernot recordedCampus boundary201,780—2026-05-10
MARA Data CenterMarathon Digital HoldingsCampus boundary164,335—2025-09-28
Vantage San Antonio IVantage Data CentersCampus boundary152,848—before 2012
Microsoft SAT14not recordedCampus boundary145,845—before 2012
Vantage San Antonio IInot recordedCampus boundary112,871—before 2012
QTS San Antonionot recordedCampus boundary96,865—before 2012
CyrusOne SAT10 & SAT11CyrusOneCampus boundary86,908—2024-12-20
Facebook Fort Worth DatacenterMetaBuilding69,97476.72020-06-11
DataBank Plano Data CenterDataBankCampus boundary61,810—2023-11-24
Facebook Fort Worth DatacenterMetaBuilding58,93764.62018-04-10
Microsoft San AntonioMicrosoftBuilding44,46748.72017-07-23
Texas Cryptologic CenterNational Security AgencyCampus boundary41,369—2017-07-23
Facebook Fort Worth DatacenterMetaBuilding40,43244.32020-06-11
Cortex supercomputernot recordedBuilding39,59143.42025-07-02
Skybox Houston OneSkyboxCampus boundary32,009—2023-11-24
Cyxtera Dallas-Fort Worth Data CenterCyxteraBuilding28,63731.42023-09-25
QTS Irving - Dallas Data Center CampusQuality Technology ServicesBuilding28,44831.22023-05-31
GoogleGoogleBuilding26,83329.42025-09-02
GoogleGoogleBuilding26,22528.72025-12-15
Stream Data Centers DFWAStream Data CentersBuilding26,07228.62024-07-13
QTS Data CenterQuality Technology ServicesBuilding25,82728.32020-06-11
CyrusOne AllenCyrusOneBuilding25,21227.62018-05-22
MicrosoftMicrosoftBuilding23,98726.32017-07-23
Digital RealtyDigital RealtyBuilding23,79826.12026-06-16
Compass Data Centernot recordedBuilding23,40625.62025-09-02
Compass Data Centernot recordedBuilding23,40625.62025-09-02
Compass Data Centernot recordedBuilding23,40425.62025-09-02
Compass Data Centernot recordedBuilding23,40425.62025-09-02
Compass Data Centernot recordedBuilding23,40325.62025-09-02
Compass Data Centernot recordedBuilding23,13225.42025-09-02
Compass Data Centernot recordedBuilding23,13225.42025-09-02
Compass Data Centernot recordedBuilding23,13225.42025-09-02
Compass Data Centernot recordedBuilding23,13125.42025-09-02
Compass Data Centernot recordedBuilding23,04025.32025-09-02
MicrosoftMicrosoftBuilding22,88025.12026-04-23
Microsoft SAT 81MicrosoftBuilding22,66324.8before 2012

“First mapped” is when OpenStreetMap recorded the facility, not when it was built — OpenStreetMap carries no construction dates. Mapped area means a building floor plate, campus boundary, or construction polygon according to the “Mapped as” column; those quantities are never added together. The megawatt column appears only for buildings and is their floor-area share of a reported national total, not a measurement.