TAP205800
SubstationOregon · PORTLAND GENERAL ELECTRIC CO
At a glance
TAP205800 is an electric transmission substation in Oregon, on PORTLAND GENERAL ELECTRIC CO's transmission network. It is classified as sub-transmission (138 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 |
|---|---|---|---|---|
| #204864 | 138 kV | PORTLAND GENERAL ELECTRIC CO | — | 2.1 mi |
| #207815 | 138 kV | PORTLAND GENERAL ELECTRIC CO | — | 0.2 mi |
| #212369 | 138 kV | PORTLAND GENERAL ELECTRIC CO | — | 0.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP205800, 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 |
| HORIZON | Substation-Adjacent | OR | Washington County | 230 kV | 300 MW | 3.5 yrs | 66.5 |
| SAINT MARYS | Substation-Adjacent | OR | Washington County | 230 kV | 300 MW | 3.5 yrs | 66.3 |
| CARVER | Substation-Adjacent | OR | Multnomah County | 230 kV | 300 MW | 3.5 yrs | 66.3 |
| GRESHAM | Substation-Adjacent | OR | Multnomah County | 230 kV | 300 MW | 3.5 yrs | 66.1 |
| UNKNOWN203409 | Substation-Adjacent | OR | Washington County | 230 kV | 300 MW | 3.5 yrs | 65.3 |
| TAP203160 | Substation-Adjacent | OR | Washington County | 230 kV | 300 MW | 3.5 yrs | 65.2 |
Who owns the transmission lines at TAP205800?
The 3 connected lines listed above are owned by PORTLAND GENERAL ELECTRIC CO. Line voltages range from 138 kV to 138 kV. Their combined recorded length is about 2.7 miles.
How do candidate sites near TAP205800 score?
The 8 highest-scoring candidate sites within about 25 miles range from 65 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 TAP205800 substation?
TAP205800 has a maximum voltage of 138 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so TAP205800 is above the national midpoint.
How many transmission lines connect to TAP205800 substation?
3 transmission lines terminate at or pass through TAP205800 in the HIFLD line data. The connected lines listed here run at 138 kV. Together the listed lines cover about 2.7 miles.
Who owns TAP205800 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP205800 belong to PORTLAND GENERAL ELECTRIC CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP205800 substation located?
TAP205800 is in Oregon at 45.5053, -122.8427. The datacenter candidate sites closest to it are in Washington County, Multnomah County.
Are there datacenter candidate sites near TAP205800 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP205800. 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, “TAP205800 substation, Oregon”, https://gridcensus.com/substations/oregon/tap205800-b49fa35f (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 TAP205800 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.