TAP207120
SubstationWashington · PUD NO 1 OF GRAYS HARBOR COUNTY
At a glance
TAP207120 is an electric transmission substation in Washington, on PUD NO 1 OF GRAYS HARBOR COUNTY's transmission network. It is classified as sub-transmission (138 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 |
|---|---|---|---|---|
| #207346 | 138 kV | PUD NO 1 OF GRAYS HARBOR COUNTY | — | 1.1 mi |
| #206333 | 69 kV | PUD NO 1 OF GRAYS HARBOR COUNTY | — | 8.8 mi |
| #208159 | 69 kV | PUD NO 1 OF GRAYS HARBOR COUNTY | — | 4.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP207120, 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 |
|---|---|---|---|---|---|---|---|
| SATSOP | Substation-Adjacent | WA | Grays Harbor County | 500 kV | 1,000 MW | 3.5 yrs | 63.7 |
| UNKNOWN206447 | Substation-Adjacent | WA | Grays Harbor County | 230 kV | 300 MW | 3.5 yrs | 59.5 |
| TAP206448 | Substation-Adjacent | WA | Grays Harbor County | 230 kV | 300 MW | 3.5 yrs | 59.4 |
| GRAYS HARBOR | Substation-Adjacent | WA | Grays Harbor County | 230 kV | 300 MW | 3.5 yrs | 59.3 |
| OZ Pacific | Greenfield | WA | Pacific | — | — | 3.5 yrs | 56.3 |
| UNKNOWN206446 | Substation-Adjacent | WA | Grays Harbor County | 138 kV | 100 MW | 3.5 yrs | 55.5 |
| TAP207120 | Substation-Adjacent | WA | Grays Harbor County | 138 kV | 100 MW | 3.5 yrs | 55.5 |
| TAP207110 | Substation-Adjacent | WA | Grays Harbor County | 138 kV | 100 MW | 3.5 yrs | 55.5 |
Who owns the transmission lines at TAP207120?
The 3 connected lines listed above are owned by PUD NO 1 OF GRAYS HARBOR COUNTY. Line voltages range from 69 kV to 138 kV. Their combined recorded length is about 14.5 miles.
How do candidate sites near TAP207120 score?
The 8 highest-scoring candidate sites within about 25 miles range from 56 to 64 on the 0–100 DC Readiness scale. They fall in Grays Harbor County, Pacific. 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 TAP207120 substation?
TAP207120 has a maximum voltage of 138 kV and a minimum of 69 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so TAP207120 is above the national midpoint.
How many transmission lines connect to TAP207120 substation?
3 transmission lines terminate at or pass through TAP207120 in the HIFLD line data. The connected lines listed here run at 138 kV, 69 kV. Together the listed lines cover about 14.5 miles.
Who owns TAP207120 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP207120 belong to PUD NO 1 OF GRAYS HARBOR COUNTY. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP207120 substation located?
TAP207120 is in Washington at 46.9815, -123.7790. The datacenter candidate sites closest to it are in Grays Harbor County, Pacific.
Are there datacenter candidate sites near TAP207120 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP207120. The highest-scoring is SATSOP at 64/100. 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, “TAP207120 substation, Washington”, https://gridcensus.com/substations/washington/tap207120-eb2937be (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 TAP207120 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.