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79.7 MW Wind operating in Stillwater, MT
79.7 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2018
Operating Since
Coordinates
45.8747, -109.4987
County
Stillwater, MT
Nearby Plants
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Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Pattern Operators LP | Pattern Energy | — |
| Owner(s) | Pattern Operators LP | Pattern Energy | — |
| Status | Operating | operating | — |
GEM identifies the owner as Pattern Energy
This entity is not yet in the GEM ownership database — chain unavailable.
Stillwater Wind, LLC is a 79.7 MW wind power plant located in Stillwater County, Montana. The plant began operating in 2018 and is owned and operated by Pattern Operators LP. The facility consists of a single generator utilizing onshore wind turbine technology. It is interconnected to the NorthWestern Energy (NWMT) balancing authority within the Western Electricity Coordinating Council (WECC) NERC region.
The plant's wind turbines have a hub height of 85 meters and a rotor diameter of 120 meters. The turbines were manufactured by Siemens Gamesa Renewable Energy, model SG-2.625-120. In its latest year of reported generation, Stillwater Wind produced 252,726 MWh of electricity, achieving a capacity factor of 36.2%. Stillwater Wind ranks as the 14th largest of 25 wind plants in Montana, and 818th nationally out of 1424 wind plants.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
NorthWestern Energy (NWMT) (NWMT)
Grid Voltage
161.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
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34.4K MWh
Latest Month
252.7K MWh
Annual Generation
36.2%
Capacity Factor
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2018
$1,453/kW
Est. Construction Cost
Total estimated cost: $115.8M
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This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-14
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