JULIAETTA
SubstationIdaho · AVISTA CORP
JULIAETTA is an electric transmission substation in Idaho, operated by AVISTA CORP. It is classified as sub-transmission (138 kv) and connects 1 transmission line. 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 |
|---|---|---|---|---|
| #75510 | 138 kV | AVISTA CORP | — | 0.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of JULIAETTA, 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 |
|---|---|---|---|---|---|---|---|
| DWORSHAK | Substation-Adjacent | ID | Lewis County | 500 kV | 1,000 MW | 1.1 yrs | 72.8 |
| DWORSHAK | Substation-Adjacent | ID | Lewis County | 500 kV | 1,000 MW | 2.0 yrs | 72.2 |
| Greenfield (DWORSHAK - TAFT) | Greenfield | ID | Latah County | 500 kV | 1,000 MW | 1.1 yrs | 70.0 |
| Greenfield (DWORSHAK - TAFT) | Greenfield | ID | Latah County | 500 kV | 1,000 MW | 1.1 yrs | 70.0 |
| Greenfield (DWORSHAK - TAFT) | Greenfield | ID | Latah County | 500 kV | 1,000 MW | 1.1 yrs | 68.7 |
| Greenfield (HATWAI - DWORSHAK) | Greenfield | ID | Nez Perce County | 500 kV | 1,000 MW | 2.0 yrs | 68.0 |
| HATWAI | Substation-Adjacent | ID | Nez Perce County | 500 kV | 1,000 MW | 1.7 yrs | 67.7 |
| Greenfield (DWORSHAK - TAFT) | Greenfield | ID | Latah County | 500 kV | 1,000 MW | 1.1 yrs | 67.7 |
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 JULIAETTA substation, Idaho. 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.