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50 MW BESS planned in Yellowstone, MT — NorthWestern Energy (NWMT)
50 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
Planned: —
Planned Operation
Coordinates
45.7843, -108.7178
County
Yellowstone, MT
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Beartooth Energy Storage, LLC | — | — |
| Owner(s) | Beartooth Energy Storage, LLC | — | — |
| Status | Planned | — | — |
Beartooth Energy Storage LLC is a 50 MW battery energy storage system located in Yellowstone County, Montana. The facility is owned and operated by Beartooth Energy Storage, LLC. It consists of a single generator utilizing battery technology and has a primary fuel source designated as 'MWH', indicating it draws power from the grid for storage and subsequent discharge. The plant operates within the NorthWestern Energy (NWMT) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
Beartooth Energy Storage is ranked as the 3rd largest energy storage facility in Montana, and 607th nationally out of 1205 similar facilities. The plant's operations and the broader energy storage industry have been the subject of at least one news article.
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
$1,361/kW
Est. Construction Cost
Total estimated cost: $68.0M
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 articlesNo ask pi reports yet for this entity.
ask pi about Beartooth Energy Storage LLCNorthWestern Energy (NWMT) (NWMT)
Grid Voltage
100.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP