TAP203420
SubstationOregon · BONNEVILLE POWER ADMINISTRATION
At a glance
TAP203420 is an electric transmission substation in Oregon, on BONNEVILLE POWER ADMINISTRATION's transmission network. It is classified as sub-transmission (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 |
|---|---|---|---|---|
| #200872 | 115 kV | BONNEVILLE POWER ADMINISTRATION | — | 18.4 mi |
| #210581 | 115 kV | BONNEVILLE POWER ADMINISTRATION | — | 0.0 mi |
| #212185 | 115 kV | BONNEVILLE POWER ADMINISTRATION | — | 0.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP203420, 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 |
|---|---|---|---|---|---|---|---|
| HAY CANYON | Substation-Adjacent | OR | Sherman County | 345 kV | 600 MW | 3.5 yrs | 61.3 |
| SHEPHERDS SOUTH | Substation-Adjacent | OR | Gilliam County | 230 kV | 300 MW | 3.5 yrs | 60.6 |
| KLONDIKE SCHOOLHOUSE | Substation-Adjacent | OR | Sherman County | 230 kV | 300 MW | 3.5 yrs | 59.8 |
| EC Near Boardman | Greenfield | OR | Morrow | — | — | 3.5 yrs | 57.9 |
| EC Coal Gilliam County | Greenfield | OR | Gilliam County | — | — | 3.5 yrs | 56.9 |
| UNKNOWN205750 | Substation-Adjacent | OR | Gilliam County | 115 kV | 100 MW | 3.5 yrs | 56.1 |
| UNKNOWN203425 | Substation-Adjacent | OR | Gilliam County | 115 kV | 100 MW | 3.5 yrs | 56.1 |
| UNKNOWN205748 | Substation-Adjacent | OR | Gilliam County | 115 kV | 100 MW | 3.5 yrs | 55.5 |
Who owns the transmission lines at TAP203420?
The 3 connected lines listed above are owned by BONNEVILLE POWER ADMINISTRATION. Line voltages range from 115 kV to 115 kV. Their combined recorded length is about 18.5 miles.
How do candidate sites near TAP203420 score?
The 8 highest-scoring candidate sites within about 25 miles range from 56 to 61 on the 0–100 DC Readiness scale. They fall in Sherman County, Gilliam County, Morrow. 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 TAP203420 substation?
TAP203420 has a maximum voltage of 115 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so TAP203420 is at the national midpoint.
How many transmission lines connect to TAP203420 substation?
3 transmission lines terminate at or pass through TAP203420 in the HIFLD line data. The connected lines listed here run at 115 kV. Together the listed lines cover about 18.5 miles.
Who owns TAP203420 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP203420 belong to BONNEVILLE POWER ADMINISTRATION. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP203420 substation located?
TAP203420 is in Oregon at 45.2315, -120.2593. The datacenter candidate sites closest to it are in Sherman County, Gilliam County, Morrow.
Are there datacenter candidate sites near TAP203420 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP203420. The highest-scoring is HAY CANYON at 61/100. 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, “TAP203420 substation, Oregon”, https://gridcensus.com/substations/oregon/tap203420-732d40e0 (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 TAP203420 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.