TAP207737
SubstationWashington · AVISTA CORP
At a glance
TAP207737 is an electric transmission substation in Washington, on AVISTA CORP'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 |
|---|---|---|---|---|
| #209092 | 46 kV | AVISTA CORP | — | 13.0 mi |
| #209093 | 46 kV | AVISTA CORP | — | 10.8 mi |
| #209094 | 46 kV | AVISTA CORP | — | 9.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP207737, 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 |
|---|---|---|---|---|---|---|---|
| OZ Lincoln | Greenfield | WA | Lincoln | — | — | 3.5 yrs | 57.5 |
| TAP206284 | Substation-Adjacent | WA | Lincoln County | 115 kV | 100 MW | 3.5 yrs | 56.2 |
| LARENE | Substation-Adjacent | WA | Lincoln County | 115 kV | 100 MW | 3.5 yrs | 55.2 |
| TAP206285 | Substation-Adjacent | WA | Lincoln County | 115 kV | 100 MW | 3.5 yrs | 54.9 |
| CRESTON | Substation-Adjacent | WA | Lincoln County | 115 kV | 100 MW | 3.5 yrs | 54.8 |
| UNKNOWN202672 | Substation-Adjacent | WA | Lincoln County | 115 kV | 100 MW | 3.5 yrs | 54.8 |
| UNKNOWN202923 | Substation-Adjacent | WA | Lincoln County | 115 kV | 100 MW | 3.5 yrs | 54.8 |
| TAP206249 | Substation-Adjacent | WA | Lincoln County | 115 kV | 100 MW | 3.5 yrs | 54.8 |
Who owns the transmission lines at TAP207737?
The 3 connected lines listed above are owned by AVISTA CORP. Line voltages range from 46 kV to 46 kV. Their combined recorded length is about 32.8 miles.
How do candidate sites near TAP207737 score?
The 8 highest-scoring candidate sites within about 25 miles range from 55 to 58 on the 0–100 DC Readiness scale. They fall in Lincoln, Lincoln County. The Washington average across 6,019 scored sites is 51.7. 1,343 of those Washington sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP207737 substation?
TAP207737 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 TAP207737 is below the national midpoint.
How many transmission lines connect to TAP207737 substation?
3 transmission lines terminate at or pass through TAP207737 in the HIFLD line data. The connected lines listed here run at 46 kV. Together the listed lines cover about 32.8 miles.
Who owns TAP207737 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP207737 belong to AVISTA CORP. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP207737 substation located?
TAP207737 is in Washington at 47.6414, -118.5479. The datacenter candidate sites closest to it are in Lincoln, Lincoln County.
Are there datacenter candidate sites near TAP207737 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP207737. The highest-scoring is OZ Lincoln at 58/100. Across Washington, the average DC Readiness score is 51.7.
More in Washington
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, “TAP207737 substation, Washington”, https://gridcensus.com/substations/washington/tap207737-a4cca260 (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 TAP207737 substation, Washington 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.