WESTWING
SubstationArizona · ARIZONA PUBLIC SERVICE COMPANY
WESTWING is an electric transmission substation in Arizona, operated by ARIZONA PUBLIC SERVICE COMPANY. It is classified as extra-high-voltage (500 kv) and connects 12 transmission lines. Substation proximity is one of the strongest speed-to-power signals for siting a datacenter — interconnection distance to an energized, high-voltage bus is often the binding constraint on time-to-energization.
Voltage & classification
Ownership & operation
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #89196 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 45.4 mi |
| #86883 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 0.2 mi |
| #87938 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 8.5 mi |
| #90044 | 500 kV | — | IN SERVICE | 242.2 mi |
| #86503 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 78.3 mi |
| #90816 | 345 kV | — | IN SERVICE | 61.6 mi |
| #92356 | 230 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 7.3 mi |
| #83252 | 230 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 14.0 mi |
| #88567 | 230 kV | — | IN SERVICE | 17.4 mi |
| #89593 | 230 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 22.1 mi |
| #89826 | 230 kV | — | IN SERVICE | 32.9 mi |
| #81851 | 230 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 12.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of WESTWING, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| WESTWING | Substation-Adjacent | AZ | Maricopa County | 500 kV | 1,000 MW | 5.7 yrs | 72.6 |
| MORGAN | Substation-Adjacent | AZ | Maricopa County | 500 kV | 1,000 MW | 5.7 yrs | 72.5 |
| PINNACLE PEAK APS | Substation-Adjacent | AZ | Maricopa County | 500 kV | 1,000 MW | 5.7 yrs | 72.4 |
| KYRENE | Substation-Adjacent | AZ | Maricopa County | 500 kV | 1,000 MW | 5.7 yrs | 70.6 |
| RUDD | Substation-Adjacent | AZ | Maricopa County | 500 kV | 1,000 MW | 5.7 yrs | 70.5 |
| ANDERSON | Substation-Adjacent | AZ | Maricopa County | 230 kV | 300 MW | 5.7 yrs | 68.7 |
| DEER VALLEY | Substation-Adjacent | AZ | Maricopa County | 230 kV | 300 MW | 5.7 yrs | 68.5 |
| GRAND TERMINAL | Substation-Adjacent | AZ | Maricopa County | 230 kV | 300 MW | 5.7 yrs | 68.4 |
Dataset updated . Screening estimates derived from public data sources.
Substation attributes are derived from public HIFLD / EIA infrastructure data and may lag real-world upgrades or retirements. Voltage and connected-line counts are screening figures — confirm available capacity and interconnection terms directly with the operating utility and ISO.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for WESTWING substation, Arizona. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.