FIREHOLE
SubstationUtah · PACIFICORP
FIREHOLE is an electric transmission substation in Utah, operated by PACIFICORP. It is classified as high-voltage (230 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #68611 | 230 kV | PACIFICORP | — | 6.8 mi |
| #68612 | 230 kV | PACIFICORP | — | 34.6 mi |
| #68614 | 230 kV | PACIFICORP | — | 12.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of FIREHOLE, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN202321 | Substation-Adjacent | WY | Sweetwater County | 230 kV | 300 MW | 1.7 yrs | 66.6 |
| ROCK SPRINGS | Substation-Adjacent | WY | Sweetwater County | 230 kV | 300 MW | 1.7 yrs | 65.5 |
| UNKNOWN202367 | Substation-Adjacent | WY | Sweetwater County | 230 kV | 300 MW | 1.7 yrs | 64.3 |
| UNKNOWN202334 | Substation-Adjacent | WY | Sweetwater County | 230 kV | 300 MW | 1.7 yrs | 64.1 |
| Greenfield (POPULUS - JIM BRIDGER) | Greenfield | WY | Sweetwater County | 345 kV | 600 MW | 1.7 yrs | 62.6 |
| Greenfield (POPULUS - JIM BRIDGER) | Greenfield | WY | Sweetwater County | 345 kV | 600 MW | 1.7 yrs | 62.3 |
| Greenfield (POPULUS - JIM BRIDGER) | Greenfield | WY | Sweetwater County | 345 kV | 600 MW | 1.7 yrs | 60.7 |
| UNKNOWN202170 | Substation-Adjacent | WY | Sweetwater County | 115 kV | 100 MW | 1.7 yrs | 60.7 |
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 FIREHOLE substation, Utah. 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.