BLUMAER
SubstationWashington · PUGET SOUND ENERGY INC
At a glance
BLUMAER is an electric transmission substation in Washington, on PUGET SOUND ENERGY INC's transmission network. It is classified as sub-transmission (138 kv) and connects 2 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 |
|---|---|---|---|---|
| #206112 | 138 kV | PUGET SOUND ENERGY INC | — | 8.1 mi |
| #212375 | 115 kV | PUGET SOUND ENERGY INC | IN SERVICE | 7.8 mi |
| #212371 | 69 kV | PUGET SOUND ENERGY INC | — | 9.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of BLUMAER, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN201455 | Substation-Adjacent | WA | Thurston County | 500 kV | 1,000 MW | 3.5 yrs | 67.8 |
| OLYMPIA | Substation-Adjacent | WA | Thurston County | 500 kV | 1,000 MW | 3.5 yrs | 63.9 |
| NAPAVINE | Substation-Adjacent | WA | Thurston County | 500 kV | 1,000 MW | 3.5 yrs | 63.8 |
| SOUTHWEST | Substation-Adjacent | WA | Pierce County | 230 kV | 300 MW | 3.5 yrs | 63.2 |
| OZ Pierce | Greenfield | WA | Pierce | — | — | 3.5 yrs | 62.3 |
| YELM PP | Substation-Adjacent | WA | Thurston County | 230 kV | 300 MW | 3.5 yrs | 61.8 |
| OZ Thurston | Greenfield | WA | Thurston | — | — | 3.5 yrs | 60.8 |
| OZ Thurston | Greenfield | WA | Thurston | — | — | 3.5 yrs | 60.7 |
How does BLUMAER compare with other substations in Washington?
Washington has 2,106 substation records in HIFLD, of which 785 carry a station name; the rest are unnamed tap points, risers and line ends. 515 named substations in the state are in BLUMAER's 115–229 kV band (66% of named stations). 137 sit in a higher band. 34 named substations in Washington operate at 345 kV or above. The highest voltage recorded in the state is 500 kV, and the state median is 115 kV.
Who owns the transmission lines at BLUMAER?
The 3 connected lines listed above are owned by PUGET SOUND ENERGY INC. Line voltages range from 69 kV to 138 kV. Their combined recorded length is about 25 miles.
How do candidate sites near BLUMAER score?
The 8 highest-scoring candidate sites within about 25 miles range from 61 to 68 on the 0–100 DC Readiness scale. They fall in Thurston County, Pierce County, Pierce, Thurston. 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 BLUMAER substation?
BLUMAER 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 BLUMAER is above the national midpoint.
How many transmission lines connect to BLUMAER substation?
2 transmission lines terminate at or pass through BLUMAER in the HIFLD line data. The connected lines listed here run at 138 kV, 115 kV, 69 kV. Together the listed lines cover about 25 miles.
Who owns BLUMAER substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at BLUMAER belong to PUGET SOUND ENERGY INC. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is BLUMAER substation located?
BLUMAER is in Washington at 46.8600, -122.8518. The datacenter candidate sites closest to it are in Thurston County, Pierce County, Pierce.
Are there datacenter candidate sites near BLUMAER substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of BLUMAER. The highest-scoring is UNKNOWN201455 at 68/100. Across Washington, the average DC Readiness score is 51.7.
Other 138 kV substations in Washington
- MARCH POINT· 10 lines
- COSMOPOLIS· 6 lines
- SNOQUALMIE· 6 lines
- COWLITZ· 5 lines
- STRATFORD· 4 lines
- TARLETT· 4 lines
- CEDAR FALLS· 3 lines
- INDUSTRIAL WAY· 3 lines
- All named substations in Washington· 785 stations
- Datacenter candidate sites in Washington· 6,019 sites
- Brownfield and retired plant sites in Washington
- Substations by state
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, “BLUMAER substation, Washington”, https://gridcensus.com/substations/washington/blumaer-71cb5ec9 (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 BLUMAER 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.