NorthWestern Energy — power plant portfolio
NorthWestern Energy operates 15 power plants across 1 country, with a combined installed capacity of 714 MW. Its plants with asset-level emissions data total 149,320 t CO₂/yr.
Fleet by fuel
Fleet interpretation
NorthWestern Energy is represented here as an asset portfolio, not just a company label. The visible fleet spans 1 country; the largest concentration is United States of America (15).
The fuel mix by asset count is hydro (10), wind (2), oil (2), gas (1). The largest listed asset is Yellowstone County Generating Station in United States of America (207 MW), and the mean listed unit size is about 48 MW across units with capacity data.
CO₂ coverage is source-labelled: 1 plants have a reported or modelled CO₂ value in the dataset, including 0 measured records. Missing values remain blank rather than inferred as company totals.
Method: plant-level records are grouped by owner/operator label, then aggregated by country, fuel, capacity and CO₂ provenance.
All 15 plants
| Plant | Fuel | Country | MW | t CO₂/yr |
|---|---|---|---|---|
| Yellowstone County Generating Station | Gas | United States of America | 207 | 149,320 |
| Thompson Falls | Hydro | United States of America | 98 | — |
| Morony | Hydro | United States of America | 63 | — |
| Cochrane | Hydro | United States of America | 60 | — |
| Rainbow (MT) | Hydro | United States of America | 59 | — |
| Holter | Hydro | United States of America | 55 | — |
| Ryan | Hydro | United States of America | 55 | — |
| Spion Kop Wind Farm | Wind | United States of America | 40 | — |
| Black Eagle | Hydro | United States of America | 24 | — |
| Hauser | Hydro | United States of America | 18 | — |
| Mystic | Hydro | United States of America | 12 | — |
| Two Dot Wind Farm | Wind | United States of America | 10 | — |
| Madison Dam | Hydro | United States of America | 9 | — |
| Lake (WY) | Oil | United States of America | 3 | — |
| Old Faithful | Oil | United States of America | 2 | — |
Ownership & capacity: WRI Global Power Plant Database (CC BY 4.0). CO₂ is measured for EPA/EU ETS records and modelled for Climate TRACE records.
Frequently asked questions
How many power plants does NorthWestern Energy operate?
NorthWestern Energy operates 15 power plants across 1 country, with about 714 MW of total capacity.
What is NorthWestern Energy's largest power plant?
Yellowstone County Generating Station in United States of America is its largest at about 207 MW.
What types of power plants does NorthWestern Energy run?
Its fleet includes hydro (10), wind (2), oil (2).
How much CO₂ do NorthWestern Energy's plants emit?
Its reporting plants emit about 149,320 tonnes of CO₂ per year in this dataset.