Maricopa County

County in AZ · 76 data centres recorded in OpenStreetMap

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Mapped facilities

on the map today

Floor area

0.96

km² across 44 buildings

Share of US load

1,050

MW, inferred upper bound

Water

2.28

million gal/day, inferred

17 of these 76 are not mapped as buildings, so no power figure is estimated for them. 12 are campus boundaries covering 5.82 km² of land, and 5 are sites mapped as under construction. 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

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.

11 of these 76 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

449

69 kV and above

Bulk substations

230 kV and above

Highest voltage

500

kV, present in this county

Generating capacity

19,676

MW across 87 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. 27 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

Name	Operator	Mapped as	Mapped area m²	Share MW	First mapped
Meta Data Center	Meta	Campus boundary	1,379,701	—	2025-06-20
Microsoft Goodyear Airpark Campus	not recorded	Campus boundary	1,074,798	—	before 2012
Compass Datacenters Goodyear Campus	not recorded	Campus boundary	794,157	—	before 2012
Microsoft Goodyear Campus	not recorded	Campus boundary	732,674	—	before 2012
Google Data Center	Google	Campus boundary	657,471	—	2025-06-20
Stream Data Centers PHXA Campus	not recorded	Under construction	473,238	—	before 2012
Aligned Data Centers	not recorded	Under construction	465,924	—	2026-06-15
Compass PHX II	not recorded	Under construction	460,346	—	2026-06-15
Apple Mesa Data Center	Apple	Campus boundary	370,117	—	2025-12-08
NTT PH1 Datacenter	NTT	Campus boundary	293,193	—	2025-02-04
Stack Infrastructure PHX01 Campus	not recorded	Under construction	277,662	—	before 2012
Vantage Data Centers AZ1 Campus	not recorded	Campus boundary	178,744	—	before 2012
Vantage Data Centers AZ2 Campus	not recorded	Under construction	149,195	—	before 2012
EdgeCore Digital	not recorded	Campus boundary	148,878	—	2025-12-08
Apple Data Center	Apple Inc.	Building	124,329	136.3	2018-03-07
Iron Mountain AZP-1	Iron Mountain	Campus boundary	117,230	—	2025-02-07
EdgeConneX PHX02 Data Center	EdgeConneX	Building	60,768	66.6	2023-12-16
Aligned Energy Data Center	not recorded	Building	47,642	52.2	2024-07-09
Iron Mountain AZP-2	Iron Mountain	Campus boundary	43,051	—	2020-12-29
Stream Data Centers PHX-1	not recorded	Building	38,392	42.1	2023-10-14
Digital Realty Phoenix PHX15	Digital Realty	Building	27,376	30.0	2023-11-29
PHX-11	Microsoft	Building	23,120	25.3	2023-04-12
PHX-12	Microsoft	Building	22,960	25.2	before 2012
PHX-13	Microsoft	Building	22,959	25.2	before 2012
PHX-14	Microsoft	Building	22,957	25.2	before 2012
PHX-10	Microsoft	Building	22,871	25.1	2023-04-12
Vantage Data Centers	Vantage Data Centers	Building	22,165	24.3	2024-05-16
QTS	Quality Technology Services	Building	15,095	16.5	2024-09-15
QTS	Quality Technology Services	Building	14,541	15.9	2024-09-15
Iron Mountain Records Storage	Iron Mountain	Building	13,548	14.8	2024-01-29
CyrusOne PHX8	not recorded	Building	12,892	14.1	2023-11-29
CyrusOne PHX7	not recorded	Building	12,883	14.1	2023-11-29
CyrusOne PHX1	CyrusOne	Building	12,761	14.0	2023-11-29
EdgeCore	not recorded	Building	10,489	11.5	2020-05-28
Flexential Phoenix - Deer Valley	Flexential	Building	10,222	11.2	2024-08-15
CyrusOne PHX4	not recorded	Building	10,122	11.1	2023-11-29
CyrusOne PHX3	not recorded	Building	9,998	11.0	2023-11-29
CyrusOne PHX4	CyrusOne	Building	9,570	10.5	2023-11-29
CyrusOne PHX5	CyrusOne	Building	9,565	10.5	2023-11-29
CyrusOne PHX6	CyrusOne	Building	9,138	10.0	2023-11-29

“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.