STEILACOOM
SubstationWashington · CITY OF TACOMA - (WA)
STEILACOOM is an electric transmission substation in Washington, operated by CITY OF TACOMA - (WA). It is classified as sub-transmission (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 |
|---|---|---|---|---|
| #74067 | 115 kV | CITY OF TACOMA - (WA) | — | 0.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of STEILACOOM, 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 | 1.7 yrs | 76.0 |
| TACOMA | Substation-Adjacent | WA | Pierce County | 500 kV | 1,000 MW | 1.7 yrs | 75.6 |
| SOUTHWEST | Substation-Adjacent | WA | Pierce County | 230 kV | 300 MW | 1.7 yrs | 72.4 |
| TAP206441 | Substation-Adjacent | WA | Pierce County | 230 kV | 300 MW | 1.7 yrs | 72.3 |
| SOUTH | Substation-Adjacent | WA | Kitsap County | 230 kV | 300 MW | 1.7 yrs | 72.1 |
| OLYMPIA | Substation-Adjacent | WA | Thurston County | 500 kV | 1,000 MW | 1.7 yrs | 71.9 |
| UNKNOWN205981 | Substation-Adjacent | WA | Kitsap County | 230 kV | 300 MW | 1.7 yrs | 71.9 |
| COWLITZ | Substation-Adjacent | WA | Pierce County | 230 kV | 300 MW | 1.7 yrs | 71.6 |
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
This page shows a public slice of the GridCensus dataset for STEILACOOM substation, Washington. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.