SURPRISE
SubstationArizona · ARIZONA PUBLIC SERVICE COMPANY
SURPRISE is an electric transmission substation in Arizona, operated by ARIZONA PUBLIC SERVICE COMPANY. It is classified as high-voltage (230 kv) and connects 2 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 |
|---|---|---|---|---|
| #86365 | 230 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 4.7 mi |
| #89838 | 230 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 4.7 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SURPRISE, 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 |
| 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 |
| WHITE TANKS SRP | Substation-Adjacent | AZ | Maricopa County | 230 kV | 300 MW | 5.7 yrs | 68.3 |
| COUNTRY CLUB | Substation-Adjacent | AZ | Maricopa County | 230 kV | 300 MW | 5.7 yrs | 68.3 |
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 SURPRISE 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.