MONROE STREET
SubstationWashington · PUD NO 1 OF GRAYS HARBOR COUNTY
At a glance
MONROE STREET is an electric transmission substation in Washington, on PUD NO 1 OF GRAYS HARBOR COUNTY's transmission network. It is classified as unclassified and connects 0 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 |
|---|---|---|---|---|
| #208155 | 69 kV | PUD NO 1 OF GRAYS HARBOR COUNTY | — | 0.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MONROE STREET, 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 |
|---|---|---|---|---|---|---|---|
| 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 |
| OZ Pacific | Greenfield | WA | Pacific | — | — | 3.5 yrs | 56.3 |
| TAP207120 | Substation-Adjacent | WA | Grays Harbor County | 138 kV | 100 MW | 3.5 yrs | 55.5 |
| UNKNOWN206446 | 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 |
| UNKNOWN201837 | Substation-Adjacent | WA | Grays Harbor County | 138 kV | 100 MW | 3.5 yrs | 55.4 |
| UNKNOWN201838 | Substation-Adjacent | WA | Grays Harbor County | 138 kV | 100 MW | 3.5 yrs | 55.4 |
Who owns the transmission lines at MONROE STREET?
The 1 connected line listed above is owned by PUD NO 1 OF GRAYS HARBOR COUNTY. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 0 miles.
How do candidate sites near MONROE STREET score?
The 8 highest-scoring candidate sites within about 25 miles range from 55 to 60 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
How many transmission lines connect to MONROE STREET substation?
0 transmission lines terminate at or pass through MONROE STREET in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 0 miles.
Who owns MONROE STREET substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at MONROE STREET 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 MONROE STREET substation located?
MONROE STREET is in Washington at 46.9834, -123.8838. The datacenter candidate sites closest to it are in Grays Harbor County, Pacific.
Are there datacenter candidate sites near MONROE STREET substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of MONROE STREET. The highest-scoring is UNKNOWN206447 at 60/100. 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, “MONROE STREET substation, Washington”, https://gridcensus.com/substations/washington/monroe-street-5dc967f1 (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 MONROE STREET 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.