SPURLOCK
SubstationArizona · SALT RIVER PROJECT
SPURLOCK is an electric transmission substation in Arizona, operated by SALT RIVER PROJECT. It is classified as sub-transmission (115 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #84938 | 115 kV | — | IN SERVICE | 21.3 mi |
| #90723 | 115 kV | SALT RIVER PROJECT | IN SERVICE | 3.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SPURLOCK, 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 |
|---|---|---|---|---|---|---|---|
| BROWNING | Substation-Adjacent | AZ | Pinal County | 500 kV | 1,000 MW | 5.7 yrs | 72.6 |
| Copper Crossing Energy and Research Cent | Brownfield | AZ | Pinal County | 230 kV | 1,779 MW | 5.7 yrs | 69.6 |
| CORBELL | Substation-Adjacent | AZ | Maricopa County | 230 kV | 300 MW | 5.7 yrs | 69.0 |
| SCHRADER | Substation-Adjacent | AZ | Pinal County | 230 kV | 300 MW | 5.7 yrs | 68.8 |
| ROGERS | Substation-Adjacent | AZ | Maricopa County | 230 kV | 300 MW | 5.7 yrs | 68.6 |
| Greenfield (BROWNING - KYRENE) | Greenfield | AZ | Pinal County | 500 kV | 1,000 MW | 5.7 yrs | 68.3 |
| THUNDERSTONE | Substation-Adjacent | AZ | Pinal County | 230 kV | 300 MW | 5.7 yrs | 68.1 |
| DINOSAUR | Substation-Adjacent | AZ | Pinal County | 230 kV | 300 MW | 5.7 yrs | 67.8 |
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 SPURLOCK 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.