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1647.4 MW Sub. Coal operating in Rosebud, MT
1,647.4 MW
Nameplate Capacity
2
Generators
units
Conventional Steam Coal
Technology
1984
Operating Since
Coordinates
45.8831, -106.6140
County
Rosebud, MT
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Talen Montana LLC | PacifiCorp | — |
| Owner(s) | Avista Corp, NorthWestern Energy (MT Hydro), PacifiCorp, Portland General Electric Co, Puget Sound Energy Inc, Talen Montana LLC | Berkshire Hathaway | — |
| Status | Operating | — | — |
The Colstrip power plant is a 1647.4 MW coal-fired generating station located in Rosebud County, Montana. The plant, which began operating in 1984, utilizes conventional steam coal technology and subbituminous coal (SUB) as its primary fuel. It consists of two generating units. The plant is owned by Berkshire Hathaway and operated by Talen Montana LLC. Colstrip is the largest power plant in Montana and ranks 18th out of 75 coal plants nationally.
In the most recent year of data, Colstrip generated 9,171,195 MWh of electricity, achieving a capacity factor of 63.6%. The plant operates within the NorthWestern Energy (NWMT) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Financial data indicates an installed cost of $386.95 per kW, based on FERC filings.
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
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
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.
542.2K MWh
Latest Month
9.2M MWh
Annual Generation
63.6%
Capacity Factor
Forward-looking generation outlook with probabilistic ranges across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
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CO₂ Intensity
2217 lb/MWh
NOx
2 lb/MWh
SO₂
0.976 lb/MWh
CH₄
0.261 lb/MWh
N₂O
0.038 lb/MWh
Capacity Factor
75.0%
Annual Net Gen
10820 GWh
CO₂eq
2234 lb/MWh
Subregion
WECC Northwest
Steam turbine · Puget Sound Energy, Inc. · Data from 2015–2024
$1,450/kW
Installed Cost
$3/kW
Annual CapEx
$37.6/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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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 2026-03-14
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