WINCHESTER
SubstationArizona · SULPHUR SPRINGS VALLEY ELECTRIC COOPERATIVE
WINCHESTER is an electric transmission substation in Arizona, operated by SULPHUR SPRINGS VALLEY ELECTRIC COOPERATIVE. It is classified as high-voltage (345 kv) and connects 3 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 |
|---|---|---|---|---|
| #82078 | 345 kV | — | IN SERVICE | 40.8 mi |
| #90580 | 345 kV | — | IN SERVICE | 87.8 mi |
| #85779 | 230 kV | SULPHUR SPRINGS VALLEY ELECTRIC COOPERATIVE | IN SERVICE | 20.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of WINCHESTER, 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 |
|---|---|---|---|---|---|---|---|
| APACHE | Substation-Adjacent | AZ | Cochise County | 230 kV | 300 MW | 5.7 yrs | 64.7 |
| Greenfield (SPRINGERVILLE - VAIL) | Greenfield | AZ | Cochise County | 345 kV | 600 MW | 3.5 yrs | 62.0 |
| WINCHESTER | Substation-Adjacent | AZ | Cochise County | 345 kV | 600 MW | 5.7 yrs | 61.2 |
| BUTTERFIELD | Substation-Adjacent | AZ | Cochise County | 230 kV | 300 MW | 5.7 yrs | 61.1 |
| Greenfield (SPRINGERVILLE - VAIL) | Greenfield | AZ | Santa Cruz County | 345 kV | 600 MW | 3.5 yrs | 60.6 |
| Greenfield (SPRINGERVILLE - VAIL) | Greenfield | AZ | Cochise County | 345 kV | 600 MW | 3.5 yrs | 60.3 |
| Greenfield (SPRINGERVILLE - VAIL) | Greenfield | AZ | Cochise County | 345 kV | 600 MW | 3.5 yrs | 60.1 |
| ADAMS | Substation-Adjacent | AZ | Cochise County | 115 kV | 100 MW | 5.7 yrs | 59.6 |
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 WINCHESTER 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.