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40 MW Wind operating in Judith Basin, MT — NorthWestern Energy (NWMT)
40 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2012
Operating Since
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 | NorthWestern Energy (MT wind/thermal) | NorthWestern Energy Group | — |
| Owner(s) | NorthWestern Energy (MT wind/thermal) | NorthWestern Energy Group | — |
| Status | Operating | operating | — |
Spion Kop Wind Farm is a 40 MW wind power facility located in Judith Basin County, Montana. The plant, which began operating in 2012, utilizes a single onshore wind turbine generator. The primary fuel source is wind (WND). The facility is owned and operated by NorthWestern Energy Group, specifically NorthWestern Energy (MT wind/thermal), and falls within the NorthWestern Energy (NWMT) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. The wind turbine has a hub height of 80 meters and a rotor diameter of 82.5 meters. The turbine was manufactured by GE Wind and is model GE1.6-82.5.
In the most recent year of data, Spion Kop Wind Farm generated 110,819 MWh, achieving a capacity factor of 31.6%. The plant's installed cost was $2,153.66 per kW, according to FERC data. Spion Kop Wind Farm ranks as the 15th largest wind farm out of 25 in Montana, and 980th out of 1424 nationally.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
14.3K MWh
Latest Month
110.8K MWh
Annual Generation
31.6%
Capacity Factor
Wind · NorthWestern Corporation · Data from 2015–2024
$2,154/kW
Installed Cost
$1/kW
Annual CapEx
$19.0/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
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ask pi about Spion Kop Wind FarmNorthWestern Energy (NWMT) (NWMT)
Grid Voltage
100.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility