COCONINO
SubstationArizona · ARIZONA PUBLIC SERVICE COMPANY
COCONINO 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 |
|---|---|---|---|---|
| #84599 | 230 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 33.2 mi |
| #91129 | 230 kV | — | IN SERVICE | 35.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of COCONINO, 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 |
|---|---|---|---|---|---|---|---|
| FLAGSTAFF | Substation-Adjacent | AZ | Coconino County | 345 kV | 600 MW | 5.7 yrs | 62.0 |
| VERDE | Substation-Adjacent | AZ | Yavapai County | 230 kV | 300 MW | 5.7 yrs | 59.4 |
| COCONINO | Substation-Adjacent | AZ | Coconino County | 230 kV | 300 MW | 5.7 yrs | 59.3 |
| Greenfield (GLEN CANYON - FLAGSTAFF) | Greenfield | AZ | Coconino County | 345 kV | 600 MW | 5.7 yrs | 56.6 |
| Greenfield (COCONINO - LEUPP) | Greenfield | AZ | Coconino County | 230 kV | 300 MW | 5.7 yrs | 56.1 |
| Greenfield (COCONINO - LEUPP) | Greenfield | AZ | Coconino County | 230 kV | 300 MW | 5.7 yrs | 55.7 |
| Greenfield (GLEN CANYON - FLAGSTAFF) | Greenfield | AZ | Coconino County | 345 kV | 600 MW | 5.7 yrs | 55.5 |
| Greenfield (COCONINO - LEUPP) | Greenfield | AZ | Coconino County | 230 kV | 300 MW | 5.7 yrs | 55.0 |
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 COCONINO 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.