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600 MW Batteries (300 MW) + Solar Photovoltaic (300 MW) planned in Garfield, WA — Bonneville Power Administration
600 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
Planned: —
Planned Operation
Coordinates
46.5024, -117.8263
County
Garfield, WA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | LOSN, LLC | — | — |
| Owner(s) | Cordelio BNC Holdings, LLC, WestDevco, LLC | — | — |
| Status | Planned | pre-construction | — |
Lower Snake Solar Generation BESS is a 600 MW hybrid power plant located in Garfield County, Washington. The facility, identified by plant ID 68344, is owned and operated by LOSN, LLC. It utilizes both solar photovoltaic and battery storage technologies, with electricity listed as its primary fuel type (MWH). The solar component employs a fixed-tilt tracking system.
The plant is the second-largest of six solar facilities in Washington state, and ranks 49th out of 514 nationally. It operates within the Bonneville Power Administration balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Recent news coverage indicates three articles related to deals involving the plant.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
No generation data available for this plant.
2023
$1,544/kW
Est. Construction Cost
Total estimated cost: $926.4M
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-26
View all articlesBonneville Power Administration (BPAT)
Grid Voltage
138.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP