HASSAYAMPA
SubstationArizona · ARIZONA PUBLIC SERVICE COMPANY
HASSAYAMPA is an electric transmission substation in Arizona, operated by ARIZONA PUBLIC SERVICE COMPANY. It is classified as extra-high-voltage (500 kv) and connects 10 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 |
|---|---|---|---|---|
| #81119 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 0.4 mi |
| #81197 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 2.4 mi |
| #82420 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 20.3 mi |
| #82458 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 1.1 mi |
| #82783 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 1.1 mi |
| #85414 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 3.4 mi |
| #87021 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 3.3 mi |
| #87608 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 20.0 mi |
| #88816 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 47.4 mi |
| #91639 | 500 kV | ARIZONA PUBLIC SERVICE COMPANY | IN SERVICE | 3.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of HASSAYAMPA, 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 |
|---|---|---|---|---|---|---|---|
| JOJOBA | Substation-Adjacent | AZ | Maricopa County | 500 kV | 1,000 MW | 5.7 yrs | 69.9 |
| HASSAYAMPA | Substation-Adjacent | AZ | Maricopa County | 500 kV | 1,000 MW | 5.7 yrs | 67.6 |
| DYNERGY ARLINGTON VALLEY ENERGY FACILITY | Substation-Adjacent | AZ | Maricopa County | 500 kV | 1,000 MW | 5.7 yrs | 67.3 |
| REDHAWK | Substation-Adjacent | AZ | Maricopa County | 500 kV | 1,000 MW | 5.7 yrs | 66.9 |
| HARQUAHALA | Substation-Adjacent | AZ | Maricopa County | 500 kV | 1,000 MW | 5.7 yrs | 66.5 |
| GILA RIVER | Substation-Adjacent | AZ | Maricopa County | 500 kV | 1,000 MW | 5.7 yrs | 65.9 |
| PALM VALLEY | Substation-Adjacent | AZ | Maricopa County | 230 kV | 300 MW | 5.7 yrs | 65.7 |
| BUCKEYE | Substation-Adjacent | AZ | Maricopa County | 230 kV | 300 MW | 5.7 yrs | 64.9 |
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 HASSAYAMPA 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.