TAP203364
SubstationCalifornia · PACIFICORP
At a glance
TAP203364 is an electric transmission substation in California, on PACIFICORP'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 |
|---|---|---|---|---|
| #200714 | 115 kV | PACIFICORP | — | 13.8 mi |
| #200715 | 115 kV | BONNEVILLE POWER ADMINISTRATION | — | 0.5 mi |
| #201429 | 115 kV | PACIFICORP | IN SERVICE | 35.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP203364, 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 |
|---|---|---|---|---|---|---|---|
| HILLTOP | Substation-Adjacent | CA | Modoc County | 345 kV | 600 MW | 7.6 yrs | 52.7 |
| WARNER | Substation-Adjacent | CA | Modoc County | 230 kV | 300 MW | 7.6 yrs | 51.1 |
| HILLTOP TAP | Substation-Adjacent | CA | Modoc County | 230 kV | 300 MW | 7.6 yrs | 50.7 |
| East Side Grange # 583 | Industrial | OR | Lake County | — | — | 3.5 yrs | 47.3 |
| TAP203364 | Substation-Adjacent | CA | Modoc County | 115 kV | 100 MW | 7.6 yrs | 46.1 |
| UNKNOWN203595 | Substation-Adjacent | OR | Modoc County | 69 kV | 50 MW | 3.5 yrs | 45.6 |
| TAP302449 | Substation-Adjacent | CA | Modoc County | 69 kV | 50 MW | 7.6 yrs | 44.7 |
| Greenfield (ALTRUS - None) | Greenfield | CA | Modoc County | 230 kV | 300 MW | 7.6 yrs | 44.7 |
Who owns the transmission lines at TAP203364?
The 3 connected lines listed above are owned by PACIFICORP, BONNEVILLE POWER ADMINISTRATION. Line voltages range from 115 kV to 115 kV. Their combined recorded length is about 49.3 miles.
How do candidate sites near TAP203364 score?
The 8 highest-scoring candidate sites within about 25 miles range from 45 to 53 on the 0–100 DC Readiness scale. They fall in Modoc County, Lake County. The California average across 8,490 scored sites is 45.4. 1,573 of those California sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP203364 substation?
TAP203364 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 TAP203364 is at the national midpoint.
How many transmission lines connect to TAP203364 substation?
3 transmission lines terminate at or pass through TAP203364 in the HIFLD line data. The connected lines listed here run at 115 kV. Together the listed lines cover about 49.3 miles.
Who owns TAP203364 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP203364 belong to PACIFICORP, and others to BONNEVILLE POWER ADMINISTRATION. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP203364 substation located?
TAP203364 is in California at 41.7335, -120.3750. The datacenter candidate sites closest to it are in Modoc County, Lake County.
Are there datacenter candidate sites near TAP203364 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP203364. The highest-scoring is HILLTOP at 53/100. Across California, the average DC Readiness score is 45.4.
More in California
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, “TAP203364 substation, California”, https://gridcensus.com/substations/california/tap203364-4e5501e0 (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 TAP203364 substation, California 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.