Lower Snake Solar Generation BESSPlanned
Garfield County, Washington · EIA plant ID 68344 · Operator: LOSN, LLC
600 MW planned (Batteries, Solar Photovoltaic), first expected Oct 2029 · EIA-860M
Nameplate—MWSummer — MW
Generators0in service
Net generation—GWh12 mo
Capacity factor—not meaningful for storage
Heat rate—thermal plants only
First online—
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
No capacity factor available.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| LOSN1 | Solar Photovoltaic | PV | 300 | 300 | planned Oct 2029 | Planned | — | coming soon |
| LOSN2 | Batteries | BA | 300 | 300 | planned Oct 2029 | Planned | — | coming soon |
Owner / operator
Operator: LOSN, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Nearby plants
Within 80 km.
| Lower Snake River Wind Energy Project | 343 MW | 2.4 km |
| Hopkins Ridge Wind | 157 MW | 9.1 km |
| Marengo Wind Plant | 234 MW | 14.7 km |
| Tucannon River Wind Farm | 267 MW | 17.8 km |
| Little Goose | 810 MW | 17.8 km |
| Lower Granite | 810 MW | 35 km |