GRASS CREEK
SubstationWyoming · PACIFICORP
GRASS CREEK is an electric transmission substation in Wyoming, operated by PACIFICORP. 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #68597 | 230 kV | PACIFICORP | — | 23.5 mi |
| #68599 | 230 kV | PACIFICORP | — | 41.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of GRASS CREEK, 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 |
|---|---|---|---|---|---|---|---|
| GRASS CREEK | Substation-Adjacent | WY | Hot Springs County | 230 kV | 300 MW | 1.7 yrs | 66.7 |
| TAP204212 | Substation-Adjacent | WY | Hot Springs County | 115 kV | 100 MW | 1.7 yrs | 64.1 |
| THERMOPOLIS | Substation-Adjacent | WY | Hot Springs County | 230 kV | 300 MW | 1.7 yrs | 63.6 |
| TAP208631 | Substation-Adjacent | WY | Hot Springs County | 115 kV | 100 MW | 1.7 yrs | 63.4 |
| TAP204210 | Substation-Adjacent | WY | Hot Springs County | 115 kV | 100 MW | 1.7 yrs | 63.1 |
| TAP204213 | Substation-Adjacent | WY | Washakie County | 115 kV | 100 MW | 1.7 yrs | 62.7 |
| Greenfield (THERMOPOLIS - GRASS CREEK) | Greenfield | WY | Hot Springs County | 230 kV | 300 MW | 1.7 yrs | 62.4 |
| Greenfield (RIVERTON - THERMOPOLIS) | Greenfield | WY | Hot Springs County | 230 kV | 300 MW | 1.7 yrs | 62.0 |
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 GRASS CREEK substation, Wyoming. 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.