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.

CO

State · 21 data centres recorded in OpenStreetMap

Mapped facilities
21
on the map today
Floor area
0.15
km² across 18 buildings
Share of US load
166
MW, inferred upper bound
Water
0.36
million gal/day, inferred

When these appeared on the map

observed, not surveyed
01121202020212021202220232024202520262026
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
805
69 kV and above
Bulk substations
234
230 kV and above
Highest voltage
345
kV, present in this state
Generating capacity
21,508
MW across 386 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. 157 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
Walmart Colorado Data CenterWalmartBuilding20,39622.42023-11-24
Flexential Denver - EnglewoodFlexentialBuilding18,46720.22020-03-07
JPMorgan ChaseJPMorgan ChaseBuilding17,48119.22024-01-31
QTSQuality Technology ServicesBuilding15,49017.02026-04-18
Google - ThorntonGoogleBuilding7,9958.82022-02-19
T5@Colorado Springsnot recordedBuilding6,9037.62022-08-04
zColo by Zayonot recordedBuilding5,7766.32023-12-11
Time Warner Datacenternot recordedBuilding5,7086.32023-11-16
Xfinity/Comcast Data Centernot recordedBuilding4,7705.22024-01-23
Pearl Plaza Office Buildingnot recordedBuilding4,5325.02023-04-26
SAP COS02SAPBuilding4,4324.92023-11-24
Time Warner Datacenternot recordedBuilding3,1413.42023-11-16
Insurance Exchange Buildingnot recordedBuilding1,8402.02023-04-26
VerizonVerizonBuilding7490.82025-10-25
Flexential - Denver - Centennial Data CenterFlexentialPoint2023-12-07
Flexential Denver - DowntownFlexentialPoint2024-08-15
Flexential - Denver - AuroraFlexentialPoint2024-08-15

“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.