WESTWING
Substation-AdjacentMaricopa County, Arizona · WECC
At a glance
WESTWING is a substation-adjacent datacenter candidate site in Maricopa County, Arizona, scoring 64.1/100 DC Readiness — 4th of 1,170 scored sites in the county. Its nearest substation is WESTWING (0 mi, 500 kV). It sits in the WECC grid region and the ARIZONA PUBLIC SERVICE CO service territory, where interconnection has averaged 3.5 years from request to operation. GridCensus catalogs 1,000 MW of candidate capacity here.
Power & interconnection
Speed to power
Deep queue and long historical waits — plan for a multi-year interconnection timeline and engage the utility early.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
Sales-tax exemption suspended Jul 2026–Jun 2029; water constraints add scrutiny.
Incentive detail: Government Property Lease Excise Tax (GPLET) for qualified facilities on government land.
Site location
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How does WESTWING compare with other sites in Maricopa County?
WESTWING ranks 4th of 1,170 scored candidate sites in Maricopa County. Its 64.1/100 is about 24% above the county average of 51.6. It is about 32% above the Arizona average of 48.5 and about 20% above the national average of 53.2.
Against the Arizona average, its strongest sub-score is power availability (100 vs 34) and its weakest is water (16 vs 17). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is WESTWING to power, fiber and other datacenters?
The nearest mapped substation, WESTWING, is about 0 miles away and operates at 500 kV. For connectivity, the nearest internet exchange facility is Aligned Phoenix (PHX-01) at 12.6 miles. 27 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Accelera Data Systems, 12.4 miles away.
What are the flood, water and hazard risks at WESTWING?
At the county level, FEMA's National Risk Index rates Maricopa County "Relatively Low".
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in Maricopa County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| KYRENE | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 66.0 |
| RUDD | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 65.9 |
| PINNACLE PEAK APS | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 64.7 |
| MORGAN | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 63.6 |
| WARD | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 63.3 |
| EC Near Crosscut | Greenfield | — | — | 3.5 yrs | 63.2 |
| OZ Maricopa | Greenfield | — | — | 3.5 yrs | 62.9 |
| OZ Maricopa | Greenfield | — | — | 3.5 yrs | 62.8 |
WESTWING: common questions
What is the DC Readiness score of WESTWING?
WESTWING scores 64.1/100 on the GridCensus DC Readiness scale, rated good. It ranks 4th of 1,170 scored sites in Maricopa County. The Maricopa County average is 51.6 and the Arizona average is 48.5.
What is the nearest substation to WESTWING?
The nearest mapped substation is WESTWING, about 0 miles away, at 500 kV. GridCensus catalogs 1,000 MW of candidate capacity for the site.
Which electric utility serves WESTWING?
ARIZONA PUBLIC SERVICE CO (investor owned) holds the retail service territory that contains the site; its holding company is ARIZONA PUBLIC SERVICE COMPANY.
What grid region is WESTWING in?
WESTWING is in the WECC region. Projects interconnecting there have averaged a 3.5-year wait from queue request to operation.
How far is WESTWING from an internet exchange?
The nearest internet exchange facility is Aligned Phoenix (PHX-01), about 12.6 miles away; 27 fiber providers report service at the location.
Related pages
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “WESTWING, Maricopa County, AZ”, https://gridcensus.com/datacenter-sites/arizona/maricopa-county/westwing-6849efb3 (data as of October 10, 2026).
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
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