SEASIDE
SubstationOregon · PACIFICORP
SEASIDE is an electric transmission substation in Oregon, operated by PACIFICORP. It is classified as sub-transmission (115 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 |
|---|---|---|---|---|
| #74715 | 115 kV | PACIFICORP | IN SERVICE | 12.9 mi |
| #74719 | 115 kV | PACIFICORP | IN SERVICE | 8.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SEASIDE, 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 |
|---|---|---|---|---|---|---|---|
| CLATSOP | Substation-Adjacent | OR | Clatsop County | 230 kV | 300 MW | 1.7 yrs | 66.9 |
| NECANICUM | Substation-Adjacent | OR | Clatsop County | 115 kV | 100 MW | 1.7 yrs | 63.5 |
| MOHLER | Substation-Adjacent | OR | Tillamook County | 115 kV | 100 MW | 1.7 yrs | 63.2 |
| CANNON BEACH | Substation-Adjacent | OR | Clatsop County | 115 kV | 100 MW | 1.7 yrs | 61.6 |
| SEASIDE | Substation-Adjacent | OR | Clatsop County | 115 kV | 100 MW | 1.7 yrs | 61.1 |
| TAP202671 | Substation-Adjacent | OR | Clatsop County | 115 kV | 100 MW | 1.7 yrs | 60.6 |
| Greenfield (TAP203172 - CLATSOP) | Greenfield | WA | Wahkiakum County | 230 kV | 300 MW | 1.7 yrs | 60.5 |
| WARRENTON | Substation-Adjacent | OR | Clatsop County | 115 kV | 100 MW | 1.7 yrs | 60.4 |
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 SEASIDE 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.