BIG HORN
SubstationOregon · BONNEVILLE POWER ADMINISTRATION
BIG HORN is an electric transmission substation in Oregon, operated by BONNEVILLE POWER ADMINISTRATION. It is classified as high-voltage (230 kv) and connects 4 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 |
|---|---|---|---|---|
| #73100 | 230 kV | BONNEVILLE POWER ADMINISTRATION | — | 2.0 mi |
| #73101 | 230 kV | BONNEVILLE POWER ADMINISTRATION | — | 0.7 mi |
| #73102 | 230 kV | BONNEVILLE POWER ADMINISTRATION | — | 2.3 mi |
| #74176 | 230 kV | PUD NO 1 OF KLICKITAT COUNTY | — | 8.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of BIG HORN, 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 |
|---|---|---|---|---|---|---|---|
| ROCK CREEK | Substation-Adjacent | WA | Klickitat County | 500 kV | 1,000 MW | 1.7 yrs | 70.8 |
| SLATT | Substation-Adjacent | OR | Gilliam County | 500 kV | 1,000 MW | 1.7 yrs | 70.4 |
| TUOLUMNE WIND PROJECT | Substation-Adjacent | WA | Klickitat County | 230 kV | 300 MW | 1.7 yrs | 68.7 |
| TAP209123 | Substation-Adjacent | WA | Klickitat County | 345 kV | 600 MW | 1.7 yrs | 68.5 |
| WINE COUNTRY | Substation-Adjacent | WA | Benton County | 230 kV | 300 MW | 1.7 yrs | 68.4 |
| JOHN DAY | Substation-Adjacent | WA | Klickitat County | 500 kV | 1,000 MW | 1.7 yrs | 68.1 |
| JUNIPER CANYON I WIND PROJECT | Substation-Adjacent | WA | Klickitat County | 230 kV | 300 MW | 1.7 yrs | 67.8 |
| ARLINGTON WIND POWER PROJECT | Substation-Adjacent | OR | Gilliam County | 230 kV | 300 MW | 1.7 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 BIG HORN substation, Oregon. 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.