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400 MW Batteries (200 MW) + Solar Photovoltaic (200 MW) planned in Deer Lodge, MT — NorthWestern Energy (NWMT)
400 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
Planned: —
Planned Operation
Coordinates
46.1439, -112.8390
County
Deer Lodge, MT
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | OPPO bn, LLC | — | — |
| Owner(s) | Cordelio BNC Holdings, LLC, WestDevco, LLC | — | — |
| Status | Planned | pre-construction | — |
Opportunity Solar Generation and BESS is a 400 MW hybrid power plant located in Deer Lodge County, Montana. The facility, owned and operated by OPPO bn, LLC, combines solar photovoltaic generation with battery energy storage. The plant utilizes fixed-tilt solar tracking technology. It is the second-largest solar facility in Montana, and ranks 93rd nationally among solar plants.
The plant consists of two generators utilizing both solar and battery technologies. The primary fuel source is listed as MWH, indicating the plant's reliance on electricity generation and storage. The facility operates within the NorthWestern Energy (NWMT) balancing authority and is part of the Western Electricity Coordinating Council (WECC) NERC region.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
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: $617.6M
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-04-19
View all articlesNorthWestern Energy (NWMT) (NWMT)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP