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.

Dallas County

County in TX · 31 data centres recorded in OpenStreetMap

Mapped facilities
31
on the map today
Floor area
0.33
km² across 28 buildings
Share of US load
366
MW, inferred upper bound
Water
0.80
million gal/day, inferred

When these appeared on the map

observed, not surveyed
01631201920202021202220232024202520262026
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.

What the grid here looks like

reported by OSM contributors
Substations
215
69 kV and above
Bulk substations
15
230 kV and above
Highest voltage
345
kV, present in this county
Generating capacity
1,747
MW across 9 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. 3 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
QTS Irving - Dallas Data Center CampusQuality Technology ServicesBuilding28,44831.22023-05-31
Stream Data Centers DFWAStream Data CentersBuilding26,07228.62024-07-13
Digital RealtyDigital RealtyBuilding23,79826.12026-06-16
Equinix InfomartEquinixBuilding22,28224.42022-12-27
Digital Realty Dallas DFW18Digital RealtyBuilding20,65622.62023-04-21
NTTNTTBuilding18,99920.82026-06-16
Digital RealtyDigital RealtyBuilding18,80120.62026-06-16
NTTNTTBuilding18,68420.52026-06-16
NTTNTTBuilding15,74617.32026-06-16
NTTNTTBuilding11,44612.52026-06-16
Digital Realty Dallas DFW29Digital RealtyBuilding11,37512.52023-04-21
Digital Realty Dallas DFW28Digital RealtyBuilding11,33612.42023-04-21
Digital Realty Dallas DFW35Digital RealtyBuilding10,82711.92023-04-21
Rackspace Richardson DFW3RackspaceBuilding10,49411.52023-04-21
Digital Realty Dallas DFW16Digital RealtyBuilding10,17011.22023-04-21
Prime DFW01-01PrimeBuilding8,2579.12022-10-31
Digital Realty Dallas DFW17Digital RealtyBuilding7,7688.52023-04-21
Lumen Dallas - 3180 Irving Blvd.Lumen TechnologiesBuilding7,5128.22025-12-26
TierPoint Dallas Data CenterTierPointBuilding6,6307.32025-12-26
DataBank Dallas Empire Central Data CenterDataBankBuilding6,2916.92025-12-26
Live Oak Data Centernot recordedBuilding4,6325.12025-11-26
Prime DFW01-01PrimeBuilding4,6165.12025-12-26
DataBanknot recordedBuilding4,0474.42026-01-19
CoreSpace DallasCoreSpaceBuilding2,9383.22025-12-26
Digital Realty DFW36Digital RealtyBuilding2,2762.52025-12-26
Lumen Dallas 6Lumen TechnologiesBuilding1,2061.32025-12-26
VIRTBIZnot recordedPoint——2019-10-06
Flexential Dallas - Downtown DallasFlexentialPoint——2024-08-15
Rad Web Hostingnot recordedPoint——2026-01-19

“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.