TAP204789
SubstationIdaho · PACIFICORP
At a glance
TAP204789 is an electric transmission substation in Idaho, on PACIFICORP's transmission network. It is classified as distribution (<69 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 |
|---|---|---|---|---|
| #203223 | 46 kV | PACIFICORP | — | 5.8 mi |
| #203224 | 46 kV | PACIFICORP | — | 0.1 mi |
| #203225 | 46 kV | PACIFICORP | — | 6.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP204789, 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 |
|---|---|---|---|---|---|---|---|
| 3 MILE KNOLL | Substation-Adjacent | ID | Caribou County | 345 kV | 600 MW | 5.0 yrs | 62.3 |
| SODA POINT | Substation-Adjacent | ID | Caribou County | 230 kV | 300 MW | 5.0 yrs | 60.5 |
| UNKNOWN201292 | Substation-Adjacent | ID | Franklin County | 230 kV | 300 MW | 5.0 yrs | 60.4 |
| GRACE | Substation-Adjacent | ID | Caribou County | 230 kV | 300 MW | 5.0 yrs | 59.8 |
| TAP204771 | Substation-Adjacent | ID | Caribou County | 230 kV | 300 MW | 5.0 yrs | 59.7 |
| UNKNOWN202637 | Substation-Adjacent | ID | Bear Lake County | 138 kV | 100 MW | 5.0 yrs | 58.9 |
| TAP204786 | Substation-Adjacent | ID | Bannock County | 138 kV | 100 MW | 5.0 yrs | 57.2 |
| TAP205003 | Substation-Adjacent | ID | Bannock County | 115 kV | 100 MW | 5.0 yrs | 57.2 |
Who owns the transmission lines at TAP204789?
The 3 connected lines listed above are owned by PACIFICORP. Line voltages range from 46 kV to 46 kV. Their combined recorded length is about 12.8 miles.
How do candidate sites near TAP204789 score?
The 8 highest-scoring candidate sites within about 25 miles range from 57 to 62 on the 0–100 DC Readiness scale. They fall in Caribou County, Franklin County, Bear Lake County, Bannock County. The Idaho average across 2,171 scored sites is 51.7. 646 of those Idaho sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP204789 substation?
TAP204789 has a maximum voltage of 46 kV. That places it in the below 69 kV band. The median named US substation in this dataset is 115 kV, so TAP204789 is below the national midpoint.
How many transmission lines connect to TAP204789 substation?
3 transmission lines terminate at or pass through TAP204789 in the HIFLD line data. The connected lines listed here run at 46 kV. Together the listed lines cover about 12.8 miles.
Who owns TAP204789 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP204789 belong to PACIFICORP. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP204789 substation located?
TAP204789 is in Idaho at 42.6499, -111.7018. The datacenter candidate sites closest to it are in Caribou County, Franklin County, Bear Lake County.
Are there datacenter candidate sites near TAP204789 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP204789. The highest-scoring is 3 MILE KNOLL at 62/100. Across Idaho, the average DC Readiness score is 51.7.
More in Idaho
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, “TAP204789 substation, Idaho”, https://gridcensus.com/substations/idaho/tap204789-e795f49c (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 TAP204789 substation, Idaho 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.