LOWER MONUMENTAL
SubstationWashington · BONNEVILLE POWER ADMINISTRATION
LOWER MONUMENTAL is an electric transmission substation in Washington, operated by BONNEVILLE POWER ADMINISTRATION. It is classified as extra-high-voltage (500 kv) and connects 6 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 |
|---|---|---|---|---|
| #67224 | 500 kV | BONNEVILLE POWER ADMINISTRATION | IN SERVICE | 39.7 mi |
| #67225 | 500 kV | BONNEVILLE POWER ADMINISTRATION | IN SERVICE | 53.4 mi |
| #67226 | 500 kV | BONNEVILLE POWER ADMINISTRATION | IN SERVICE | 24.1 mi |
| #67227 | 500 kV | BONNEVILLE POWER ADMINISTRATION | IN SERVICE | 24.1 mi |
| #67246 | 500 kV | BONNEVILLE POWER ADMINISTRATION | IN SERVICE | 1.0 mi |
| #75411 | 500 kV | COLUMBIA RURAL ELEC ASSN, INC | — | 37.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of LOWER MONUMENTAL, 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 |
|---|---|---|---|---|---|---|---|
| SACAJAWEA | Substation-Adjacent | WA | Walla Walla County | 500 kV | 1,000 MW | 1.7 yrs | 74.4 |
| TAP203128 | Substation-Adjacent | WA | Walla Walla County | 500 kV | 1,000 MW | 1.7 yrs | 73.6 |
| LOWER MONUMENTAL | Substation-Adjacent | WA | Franklin County | 500 kV | 1,000 MW | 1.7 yrs | 70.4 |
| Greenfield (LITTLE GOOSE - LOWER MONUMENTA) | Greenfield | WA | Columbia County | 500 kV | 1,000 MW | 1.7 yrs | 67.2 |
| Greenfield (CENTRAL FERRY - LOWER MONUMENT) | Greenfield | WA | Columbia County | 500 kV | 1,000 MW | 1.7 yrs | 66.9 |
| Greenfield (LITTLE GOOSE - LOWER MONUMENTA) | Greenfield | WA | Walla Walla County | 500 kV | 1,000 MW | 1.7 yrs | 66.5 |
| Greenfield (CENTRAL FERRY - LOWER MONUMENT) | Greenfield | WA | Walla Walla County | 500 kV | 1,000 MW | 1.7 yrs | 66.5 |
| TAP209208 | Substation-Adjacent | WA | Walla Walla County | 115 kV | 100 MW | 1.7 yrs | 66.2 |
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 LOWER MONUMENTAL 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.