- Clean firm
- In development
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- In development
- Operating
Hauser: location and 1 exact-grade project within 25 km. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Hauser
Power plant · Hydro
Key facts
Power plant · Hydroran 87% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1911
- Net generation, 2025
- 128,407 MWh
- Grid
- 69 kV to NorthWestern Energy LLC - (MT) (NWMT)
- Location
- Lewis and Clark County, Montana
- Operated by
- NorthWestern Energy (MT Hydro)SourceEIA-860M Preliminary Monthly Electric Generator Inventory
Output
Details
Who’s behind it
No companies named in filings yet.
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- Technology
- Hydro source: “Conventional Hydroelectric”
- Age
- 115 years since 1911
All 4 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Fuel burned (MMBtu), 2025 | 438,125 |
| Capacity factor, 2025 | 0.873 |
| Net generation (MWh), 2025 | 128,407 |
| Balancing authority code | NWMT |
Retirement
EIA-860M September 2026StatusSome generators are scheduled to retire; most of the plant's capacity is not, so it is shown as operating. As of EIA-860M for September 2026.- Capacity retired
- 15.3 MW
- Generators retired
- 5
- Next scheduled retirement
- June 2028
- Capacity scheduled to retire
- 2.8 MW
- Generators scheduled to retire
- 1
- Share of in-service capacity scheduled
- 17%
- Capacity still in service
- 16.8 MW
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| HAU4 | Conventional Hydroelectric | 2.8 MW | Retired | November 2017 |
| HAU2 | Conventional Hydroelectric | 3.9 MW | Retired | December 2019 |
| HAU5 | Conventional Hydroelectric | 2.8 MW | Retired | April 2021 |
| HAU1 | Conventional Hydroelectric | 2.8 MW | Retired | September 2023 |
| HAU6 | Conventional Hydroelectric | 3 MW | Retired | July 2025 |
| HAU3 | Conventional Hydroelectric | 2.8 MW | Scheduled to retire | June 2028 |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 69 kV
- Transmission or distribution system owner
- NorthWestern Energy LLC - (MT)
- Balancing authority
- NorthWestern Energy (NWMT)
- NERC region
- WECC
Can the connection be reused?
A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.
Timeline
- Stated Unit HAU3 scheduled to retire, 2.8 MW · EIA-860M
- Stated Unit HAU6 scheduled to retire, 3 MW · EIA-860M
- Stated Unit HAU1 scheduled to retire, 2.8 MW · EIA-860M
- Stated Unit HAU5 scheduled to retire, 2.8 MW · EIA-860M
- Stated Unit HAU2 scheduled to retire, 3.9 MW · EIA-860M
- Stated Unit HAU4 scheduled to retire, 2.8 MW · EIA-860M
- In service · EIA-860M
Sources
3 sourcesSources EIA-860M · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory
Sources
- EIA-860M Preliminary Monthly Electric Generator Inventory
- EIA Open Data bulk file — Electricity (ELEC.zip; monthly plant net generation and fuel consumption since 2001)Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory
Around this plant
Nearby
within 25 km| Project | Kind | Away | MW |
|---|---|---|---|
| Hauser Announced | Hydro | 0.0 km | 7 |