SOUTH ELMA
SubstationWashington · BONNEVILLE POWER ADMINISTRATION
SOUTH ELMA is an electric transmission substation in Washington, operated by BONNEVILLE POWER ADMINISTRATION. It is classified as sub-transmission (115 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 & 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 |
|---|---|---|---|---|
| #67992 | 115 kV | BONNEVILLE POWER ADMINISTRATION | — | 4.7 mi |
| #67993 | 115 kV | BONNEVILLE POWER ADMINISTRATION | — | 21.2 mi |
| #75792 | 115 kV | PUD NO 1 OF GRAYS HARBOR COUNTY | — | 12.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SOUTH ELMA, 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 | 1.7 yrs | 72.0 |
| SHELTON | Substation-Adjacent | WA | Mason County | 230 kV | 300 MW | 1.7 yrs | 70.3 |
| UNKNOWN201448 | Substation-Adjacent | WA | Mason County | 230 kV | 300 MW | 1.7 yrs | 66.3 |
| TAP206448 | Substation-Adjacent | WA | Grays Harbor County | 230 kV | 300 MW | 1.7 yrs | 65.6 |
| Greenfield (PAUL - SATSOP) | Greenfield | WA | Thurston County | 500 kV | 1,000 MW | 1.7 yrs | 64.7 |
| UNKNOWN209877 | Substation-Adjacent | WA | Mason County | 115 kV | 100 MW | 1.7 yrs | 64.4 |
| TAP206788 | Substation-Adjacent | WA | Mason County | 115 kV | 100 MW | 1.7 yrs | 64.2 |
| Greenfield (PAUL - SATSOP) | Greenfield | WA | Thurston County | 500 kV | 1,000 MW | 1.7 yrs | 64.1 |
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 ELMA 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.