Power plant · Montana, United States
Colstrip
Colstrip is a power plant in Montana, United States, with 1,647 MW of capacity, owned by Puget Sound Energy Inc (25%), Portland General Electric Co (20%), Talen Montana LLC (15%) and 3 others.
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | Montana | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Status | Operating | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Start year | 1984 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | Puget Sound Energy Inc (25%) | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | Portland General Electric Co (20%) | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | Talen Montana LLC (15%) | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | Avista Corp (15%) | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | NorthWestern Energy (MT Hydro) (15%) | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | PacifiCorp (10%) | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Operator | Talen Montana LLC | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Capacity | 1,647 MW | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Technology | Conventional Steam Coal | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Coordinates | 45.8831, -106.6140 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
Know more about this power plant, or want an introduction to its owner? Ask us.
How it compares
Colstrip is the largest of 3 power plants in Montana and the 125th-largest of 800 in the United States by capacity; its 1,647 MW is 0.2% of the 839,036 MW we hold for the United States. Ranks and totals cover the power plants in our data that report their capacity, not every one in existence. Power plants planned, permitted or under construction are ranked apart.
| Within | Rank | Total | Share |
|---|---|---|---|
| Montana | 1st of 3 | 2,660 MW | 62% |
| United States | 125th of 800 | 839,036 MW | 0.2% |
| All power plants in our data | 130th of 4,829 | 1,037,268 MW | 0.16% |
Owners, operator and place
- Puget Sound Energy IncOwner · 25%
- Portland General Electric CoOwner · 20%
- Talen Montana LLCOwner · 15%
- Avista CorpOwner · 15%
- NorthWestern Energy (MT Hydro)Owner · 15%
- PacifiCorpOwner · 10%
- Talen Montana LLCOperator
- Power plants in Montana, United States5
- Power plants in the United States1,635
- The United States: country profile
- Largest power plants
Other power plants in Montana
- Libby525 MW
- Noxon Rapids488 MW
- Haymaker Hybrid630 MW · planned
- Anthelope Hills Solar Generation BESS400 MW · planned
Data on this page
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- Bundesnetzagentur, Marktstammdatenregister. Marktstammdatenregister, DL-DE-BY-2.0.