TAP203423
SubstationOregon · BONNEVILLE POWER ADMINISTRATION
At a glance
TAP203423 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 |
|---|---|---|---|---|
| #200876 | 115 kV | BONNEVILLE POWER ADMINISTRATION | — | 0.2 mi |
| #200877 | 115 kV | BONNEVILLE POWER ADMINISTRATION | — | 12.9 mi |
| #204781 | 115 kV | PACIFICORP | — | 8.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP203423, 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 |
|---|---|---|---|---|---|---|---|
| COYOTE SPRINGS | Substation-Adjacent | OR | Benton County | 500 kV | 1,000 MW | 3.5 yrs | 65.8 |
| SLATT | Substation-Adjacent | OR | Gilliam County | 500 kV | 1,000 MW | 3.5 yrs | 64.8 |
| Boardman | Brownfield | OR | Morrow County | — | 642 MW | 3.5 yrs | 64.8 |
| Columbia Ridge Landfill Phase II | Brownfield | OR | Gilliam | 115 kV | 50 MW | 3.5 yrs | 62.0 |
| HORSE HEAVEN | Substation-Adjacent | WA | Benton County | 230 kV | 300 MW | 3.5 yrs | 61.6 |
| BOARDMAN | Substation-Adjacent | OR | Benton County | 230 kV | 300 MW | 3.5 yrs | 61.3 |
| DALREED | Substation-Adjacent | OR | Gilliam County | 230 kV | 300 MW | 3.5 yrs | 61.1 |
| SHEPHERDS NORTH | Substation-Adjacent | OR | Gilliam County | 230 kV | 300 MW | 3.5 yrs | 61.0 |
Who owns the transmission lines at TAP203423?
The 3 connected lines listed above are owned by BONNEVILLE POWER ADMINISTRATION, PACIFICORP. Line voltages range from 115 kV to 115 kV. Their combined recorded length is about 21.4 miles.
How do candidate sites near TAP203423 score?
The 8 highest-scoring candidate sites within about 25 miles range from 61 to 66 on the 0–100 DC Readiness scale. They fall in Benton County, Gilliam County, Morrow County, Gilliam. 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 TAP203423 substation?
TAP203423 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 TAP203423 is at the national midpoint.
How many transmission lines connect to TAP203423 substation?
3 transmission lines terminate at or pass through TAP203423 in the HIFLD line data. The connected lines listed here run at 115 kV. Together the listed lines cover about 21.4 miles.
Who owns TAP203423 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP203423 belong to BONNEVILLE POWER ADMINISTRATION, and others to PACIFICORP. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP203423 substation located?
TAP203423 is in Oregon at 45.7614, -120.0016. The datacenter candidate sites closest to it are in Benton County, Gilliam County, Morrow County.
Are there datacenter candidate sites near TAP203423 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP203423. The highest-scoring is COYOTE SPRINGS at 66/100. 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, “TAP203423 substation, Oregon”, https://gridcensus.com/substations/oregon/tap203423-26d1a2e2 (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 TAP203423 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.