SOUTH
SubstationWashington · BONNEVILLE POWER ADMINISTRATION
SOUTH is an electric transmission substation in Washington, operated by BONNEVILLE POWER ADMINISTRATION. It is classified as high-voltage (230 kv) and connects 7 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 & operation
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #72431 | 230 kV | CITY OF SEATTLE - (WA) | — | 0.9 mi |
| #72432 | 230 kV | BONNEVILLE POWER ADMINISTRATION | — | 5.4 mi |
| #72433 | 230 kV | CITY OF SEATTLE - (WA) | — | 10.3 mi |
| #72435 | 230 kV | CITY OF SEATTLE - (WA) | — | 1.7 mi |
| #72443 | 230 kV | CITY OF SEATTLE - (WA) | — | 2.1 mi |
| #72444 | 230 kV | CITY OF SEATTLE - (WA) | — | 3.4 mi |
| #77570 | 115 kV | PUGET SOUND ENERGY INC | IN SERVICE | 2.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SOUTH, 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 |
|---|---|---|---|---|---|---|---|
| SNO-KING | Substation-Adjacent | WA | Kitsap County | 500 kV | 1,000 MW | 1.7 yrs | 77.1 |
| 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 |
| SNOHOMISH | Substation-Adjacent | WA | Snohomish County | 345 kV | 600 MW | 1.7 yrs | 75.2 |
| BOTHELL | Substation-Adjacent | WA | Snohomish County | 230 kV | 300 MW | 1.7 yrs | 73.9 |
| MASSACHUSETTS STREET | Substation-Adjacent | WA | Kitsap County | 230 kV | 300 MW | 1.7 yrs | 73.4 |
| SEATTLE CITY EAST PINE | Substation-Adjacent | WA | Kitsap County | 230 kV | 300 MW | 1.7 yrs | 73.3 |
| BERRYDALE | Substation-Adjacent | WA | King County | 230 kV | 300 MW | 1.7 yrs | 73.1 |
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 SOUTH 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.