UNION GAP
SubstationWashington · PACIFICORP
UNION GAP is an electric transmission substation in Washington, operated by PACIFICORP. It is classified as high-voltage (230 kv) and connects 7 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 |
|---|---|---|---|---|
| #72451 | 230 kV | PACIFICORP | — | 7.6 mi |
| #72452 | 230 kV | PACIFICORP | — | 39.5 mi |
| #72908 | 138 kV | PACIFICORP | — | 9.0 mi |
| #77703 | 115 kV | PACIFICORP | — | 9.6 mi |
| #77704 | 115 kV | PACIFICORP | — | 3.5 mi |
| #77705 | 115 kV | PACIFICORP | — | 1.7 mi |
| #77719 | 115 kV | PACIFICORP | — | 6.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of UNION GAP, 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 |
|---|---|---|---|---|---|---|---|
| UNION GAP | Substation-Adjacent | WA | Yakima County | 230 kV | 300 MW | 1.7 yrs | 70.6 |
| OUTLOOK | Substation-Adjacent | WA | Benton County | 230 kV | 300 MW | 1.7 yrs | 70.5 |
| MOXEE | Substation-Adjacent | WA | Yakima County | 115 kV | 100 MW | 1.7 yrs | 69.7 |
| UNKNOWN203029 | Substation-Adjacent | WA | Yakima County | 115 kV | 100 MW | 1.7 yrs | 69.4 |
| POMONA HEIGHTS | Substation-Adjacent | WA | Yakima County | 230 kV | 300 MW | 1.7 yrs | 69.1 |
| UNKNOWN209128 | Substation-Adjacent | WA | Yakima County | 115 kV | 100 MW | 1.7 yrs | 68.9 |
| UNKNOWN202736 | Substation-Adjacent | WA | Yakima County | 115 kV | 100 MW | 1.7 yrs | 68.8 |
| UNKNOWN209129 | Substation-Adjacent | WA | Yakima County | 115 kV | 100 MW | 1.7 yrs | 68.7 |
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 UNION GAP substation, Washington. 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.