HORIZON
SubstationOregon · PORTLAND GENERAL ELECTRIC CO
HORIZON is an electric transmission substation in Oregon, operated by PORTLAND GENERAL ELECTRIC CO. 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 |
|---|---|---|---|---|
| #67408 | 230 kV | PORTLAND GENERAL ELECTRIC CO | — | 1.5 mi |
| #67078 | 115 kV | PORTLAND GENERAL ELECTRIC CO | — | 0.1 mi |
| #74658 | 115 kV | PORTLAND GENERAL ELECTRIC CO | IN SERVICE | 0.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of HORIZON, 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 |
|---|---|---|---|---|---|---|---|
| KEELER | Substation-Adjacent | OR | Washington County | 500 kV | 1,000 MW | 1.7 yrs | 78.8 |
| PEARL | Substation-Adjacent | OR | Washington County | 500 kV | 1,000 MW | 1.7 yrs | 78.1 |
| MCLOUGHLIN | Substation-Adjacent | OR | Multnomah County | 230 kV | 300 MW | 1.7 yrs | 74.3 |
| HORIZON | Substation-Adjacent | OR | Washington County | 230 kV | 300 MW | 1.7 yrs | 74.2 |
| ROSS | Substation-Adjacent | WA | Clark County | 345 kV | 600 MW | 1.7 yrs | 74.1 |
| RIVERGATE | Substation-Adjacent | OR | Washington County | 230 kV | 300 MW | 1.7 yrs | 73.1 |
| SAINT MARYS | Substation-Adjacent | OR | Washington County | 230 kV | 300 MW | 1.7 yrs | 72.9 |
| TAP203160 | Substation-Adjacent | OR | Washington County | 230 kV | 300 MW | 1.7 yrs | 72.6 |
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 HORIZON 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.