MOSSYROCK PP
SubstationWashington · BONNEVILLE POWER ADMINISTRATION
MOSSYROCK PP is an electric transmission substation in Washington, operated by BONNEVILLE POWER ADMINISTRATION. It is classified as high-voltage (230 kv) and connects 5 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 |
|---|---|---|---|---|
| #73123 | 240 kV | CITY OF TACOMA - (WA) | — | 0.3 mi |
| #73124 | 240 kV | CITY OF TACOMA - (WA) | — | 0.3 mi |
| #67453 | 230 kV | BONNEVILLE POWER ADMINISTRATION | — | 27.3 mi |
| #67454 | 230 kV | CITY OF TACOMA - (WA) | — | 11.8 mi |
| #72572 | 115 kV | PUD NO 1 OF LEWIS COUNTY | — | 14.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MOSSYROCK PP, 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 |
|---|---|---|---|---|---|---|---|
| MOSSYROCK | Substation-Adjacent | WA | Lewis County | 240 kV | 300 MW | 1.7 yrs | 67.7 |
| MAYFIELD | Substation-Adjacent | WA | Lewis County | 240 kV | 300 MW | 1.7 yrs | 66.7 |
| TAP209044 | Substation-Adjacent | WA | Thurston County | 115 kV | 100 MW | 1.7 yrs | 65.8 |
| Greenfield (RAVER - PAUL) | Greenfield | WA | Thurston County | 500 kV | 1,000 MW | 1.7 yrs | 64.6 |
| RAINIER VIEW | Substation-Adjacent | WA | Thurston County | 115 kV | 100 MW | 1.7 yrs | 63.9 |
| TAP209043 | Substation-Adjacent | WA | Thurston County | 115 kV | 100 MW | 1.7 yrs | 63.8 |
| ELBE | Substation-Adjacent | WA | Lewis County | 115 kV | 100 MW | 1.7 yrs | 63.7 |
| HUNTTING | Substation-Adjacent | WA | Lewis County | 115 kV | 100 MW | 1.7 yrs | 63.6 |
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 MOSSYROCK PP 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.