TAP302651
SubstationCalifornia · PACIFICORP
At a glance
TAP302651 is an electric transmission substation in California, on PACIFICORP's transmission network. It is classified as high-voltage (230 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 |
|---|---|---|---|---|
| #307169 | 230 kV | PACIFICORP | IN SERVICE | 44.2 mi |
| #311404 | 230 kV | PACIFICORP | — | 7.9 mi |
| #312525 | 230 kV | PACIFICORP | IN SERVICE | 16.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP302651, 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 |
| TAP310737 | Substation-Adjacent | CA | Modoc County | 230 kV | 300 MW | 7.6 yrs | 51.1 |
| TAP302651 | Substation-Adjacent | CA | Modoc County | 230 kV | 300 MW | 7.6 yrs | 50.9 |
| HILLTOP TAP | Substation-Adjacent | CA | Modoc County | 230 kV | 300 MW | 7.6 yrs | 50.7 |
| TAP302449 | Substation-Adjacent | CA | Modoc County | 69 kV | 50 MW | 7.6 yrs | 44.7 |
| ADIN | 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 |
| CLEAR LAKE | Substation-Adjacent | CA | Modoc County | 69 kV | 50 MW | 7.6 yrs | 44.6 |
Who owns the transmission lines at TAP302651?
The 3 connected lines listed above are owned by PACIFICORP. Line voltages range from 230 kV to 230 kV. Their combined recorded length is about 68.4 miles.
How do candidate sites near TAP302651 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. 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 TAP302651 substation?
TAP302651 has a maximum voltage of 230 kV. That places it in the 230–344 kV band. The median named US substation in this dataset is 115 kV, so TAP302651 is above the national midpoint.
How many transmission lines connect to TAP302651 substation?
3 transmission lines terminate at or pass through TAP302651 in the HIFLD line data. The connected lines listed here run at 230 kV. Together the listed lines cover about 68.4 miles.
Who owns TAP302651 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP302651 belong to PACIFICORP. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP302651 substation located?
TAP302651 is in California at 41.5344, -120.9448. The datacenter candidate sites closest to it are in Modoc County.
Are there datacenter candidate sites near TAP302651 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP302651. 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, “TAP302651 substation, California”, https://gridcensus.com/substations/california/tap302651-c2ec3f09 (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 TAP302651 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.