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207 MW Natural Gas operating in Yellowstone, MT
207 MW
Nameplate Capacity
18
Generators
units
Natural Gas Internal Combustion Engine
Technology
2024
Operating Since
Coordinates
45.6599, -108.7608
County
Yellowstone, MT
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | NorthWestern Energy (MT wind/thermal) | — | — |
| Owner(s) | NorthWestern Energy (MT wind/thermal) | — | — |
| Status | Operating | — | — |
Yellowstone County Generating Station is a 207 MW natural gas-fired power plant located in Yellowstone County, Montana. The facility, which began operating in 2024, is owned and operated by NorthWestern Energy (MT wind/thermal). It utilizes 18 natural gas internal combustion engine generators. The plant is within the NorthWestern Energy (NWMT) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
In its most recent year of operation, the Yellowstone County Generating Station produced 383,412 MWh of electricity, achieving a capacity factor of 21.2%. The plant's installed cost was $1,648.01 per kW, according to FERC data. The Yellowstone County Generating Station is ranked as the largest of 3 natural gas plants in Montana and 741st out of 945 similar plants 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
NorthWestern Energy (NWMT) (NWMT)
Grid Voltage
100.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
30.0K MWh
Latest Month
383.4K MWh
Annual Generation
21.2%
Capacity Factor
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Gas turbine · NorthWestern Corporation · Data from 2024
$1,648/kW
Installed Cost
$49.6/MWh
Operating Cost
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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.
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-26
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