TAP206477
SubstationOregon · PORTLAND GENERAL ELECTRIC CO
At a glance
TAP206477 is an electric transmission substation in Oregon, on PORTLAND GENERAL ELECTRIC CO's transmission network. It is classified as distribution (69–115 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
Ownership
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #206381 | 69 kV | PORTLAND GENERAL ELECTRIC CO | — | 0.2 mi |
| #206382 | 69 kV | PORTLAND GENERAL ELECTRIC CO | — | 0.1 mi |
| #206385 | 69 kV | PORTLAND GENERAL ELECTRIC CO | — | 0.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP206477, 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 | 3.5 yrs | 70.9 |
| PEARL | Substation-Adjacent | OR | Washington County | 500 kV | 1,000 MW | 3.5 yrs | 70.3 |
| BPA TROUTDALE | Substation-Adjacent | OR | Multnomah County | 500 kV | 1,000 MW | 3.5 yrs | 69.7 |
| OSTRANDER | Substation-Adjacent | OR | Multnomah County | 500 kV | 1,000 MW | 3.5 yrs | 68.7 |
| HORIZON | Substation-Adjacent | OR | Washington County | 230 kV | 300 MW | 3.5 yrs | 66.5 |
| CARVER | Substation-Adjacent | OR | Multnomah County | 230 kV | 300 MW | 3.5 yrs | 66.3 |
| SAINT MARYS | Substation-Adjacent | OR | Washington County | 230 kV | 300 MW | 3.5 yrs | 66.3 |
| BLUE LAKE | Substation-Adjacent | OR | Multnomah County | 230 kV | 300 MW | 3.5 yrs | 66.2 |
Who owns the transmission lines at TAP206477?
The 3 connected lines listed above are owned by PORTLAND GENERAL ELECTRIC CO. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 0.3 miles.
How do candidate sites near TAP206477 score?
The 8 highest-scoring candidate sites within about 25 miles range from 66 to 71 on the 0–100 DC Readiness scale. They fall in Washington County, Multnomah County. The Oregon average across 2,430 scored sites is 53.1. 844 of those Oregon sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP206477 substation?
TAP206477 has a maximum voltage of 69 kV. That places it in the 69–114 kV band. The median named US substation in this dataset is 115 kV, so TAP206477 is below the national midpoint.
How many transmission lines connect to TAP206477 substation?
3 transmission lines terminate at or pass through TAP206477 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 0.3 miles.
Who owns TAP206477 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP206477 belong to PORTLAND GENERAL ELECTRIC CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP206477 substation located?
TAP206477 is in Oregon at 45.3561, -122.6188. The datacenter candidate sites closest to it are in Washington County, Multnomah County.
Are there datacenter candidate sites near TAP206477 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP206477. The highest-scoring is KEELER at 71/100. Across Oregon, the average DC Readiness score is 53.1.
More in Oregon
About this data
Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “TAP206477 substation, Oregon”, https://gridcensus.com/substations/oregon/tap206477-f25ddf46 (data as of June 29, 2026).
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
Every site and score for TAP206477 substation, Oregon is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.