TAP209134
SubstationWashington · PUGET SOUND ENERGY INC
At a glance
TAP209134 is an electric transmission substation in Washington, on PUGET SOUND ENERGY INC's transmission network. It is classified as distribution (69–115 kv) and connects 1 transmission line. 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 |
|---|---|---|---|---|
| #211227 | 69 kV | PUGET SOUND ENERGY INC | — | 11.6 mi |
| #211229 | 69 kV | PUGET SOUND ENERGY INC | — | 8.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP209134, 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 |
|---|---|---|---|---|---|---|---|
| MAPLE VALLEY | Substation-Adjacent | WA | King County | 500 kV | 1,000 MW | 3.5 yrs | 68.4 |
| COVINGTON | Substation-Adjacent | WA | King County | 500 kV | 1,000 MW | 3.5 yrs | 68.2 |
| ECHO LAKE | Substation-Adjacent | WA | King County | 500 kV | 1,000 MW | 3.5 yrs | 67.4 |
| RAVER | Substation-Adjacent | WA | King County | 500 kV | 1,000 MW | 3.5 yrs | 66.6 |
| TAP206230 | Substation-Adjacent | WA | King County | 500 kV | 1,000 MW | 3.5 yrs | 66.3 |
| BERRYDALE | Substation-Adjacent | WA | King County | 230 kV | 300 MW | 3.5 yrs | 63.8 |
| KLAHANIE | Substation-Adjacent | WA | King County | 230 kV | 300 MW | 3.5 yrs | 63.5 |
| ELECTRON HEIGHTS | Substation-Adjacent | WA | Pierce County | 230 kV | 300 MW | 3.5 yrs | 62.3 |
Who owns the transmission lines at TAP209134?
The 2 connected lines listed above are owned by PUGET SOUND ENERGY INC. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 20.1 miles.
How do candidate sites near TAP209134 score?
The 8 highest-scoring candidate sites within about 25 miles range from 62 to 68 on the 0–100 DC Readiness scale. They fall in King County, Pierce 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 TAP209134 substation?
TAP209134 has a maximum voltage of 69 kV. That places it in the 69–114 kV band. The median named US substation in this dataset is 115 kV, so TAP209134 is below the national midpoint.
How many transmission lines connect to TAP209134 substation?
1 transmission line terminate at or pass through TAP209134 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 20.1 miles.
Who owns TAP209134 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP209134 belong to PUGET SOUND ENERGY INC. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP209134 substation located?
TAP209134 is in Washington at 47.1777, -121.7917. The datacenter candidate sites closest to it are in King County, Pierce County.
Are there datacenter candidate sites near TAP209134 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP209134. The highest-scoring is MAPLE VALLEY at 68/100. 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, “TAP209134 substation, Washington”, https://gridcensus.com/substations/washington/tap209134-d33cd0ac (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 TAP209134 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.