gridprims

Power plant · EIA plant code 2185

Hauser

Operator
NorthWestern Energy (MT Hydro)
Location
Lewis and Clark, MT (county level only)
Balancing authority
NorthWestern Energy (NWMT) (NWMT)
Nameplate capacity
16.8 MW
Summer capacity
16.8 MW

Planned changes reported to EIA: 1 planned retirement and 2 proposed generators.

U.S. Energy Information Administration · Annual Electric Generator Report (Form EIA-860) · data for 2025 · as of Sep 10, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0

Generation in 2025

Net generation
128,407 MWh
Capacity factor
87.2%

Capacity factor is net generation divided by nameplate capacity times the hours each generator was in service that year, counted by month.

U.S. Energy Information Administration · Power Plant Operations Report (Form EIA-923) · data for 2025 · as of Sep 11, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0

Emissions

eGRID2023 (revision 2) reports no carbon dioxide for this plant.

Emissions are for 2023, the newest eGRID year. Generation is for 2025, the newest EIA-923 year.

U.S. Environmental Protection Agency · Emissions & Generation Resource Integrated Database (eGRID) · data for 2023 · as of Jun 16, 2025 · retrieved Oct 31, 2026 · CC-BY-4.0

Generators

Generators at Hauser
GeneratorTechnologyEnergy sourceNameplateOperating sinceStatus
HAU10Conventional HydroelectricWAT3.5 MW2025Operable · As of September 2026 (EIA-860M): (OP) Operating
HAU11Conventional HydroelectricWAT3.5 MW2021Operable · As of September 2026 (EIA-860M): (OP) Operating
HAU12Conventional HydroelectricWAT3.5 MWProposed, planned start 2029 · As of September 2026 (EIA-860M): (P) Planned for installation, but regulatory approvals not initiated
HAU3Conventional HydroelectricWAT2.8 MW1911Operable · Planned retirement: 2028 (reported to EIA) · As of September 2026 (EIA-860M): (OP) Operating
HAU6Conventional HydroelectricWAT3 MW1915Retired in 2025 · As of September 2026 (EIA-860M): retired
HAU7Conventional HydroelectricWAT3.5 MW2019Operable · As of September 2026 (EIA-860M): (OP) Operating
HAU8Conventional HydroelectricWAT3.5 MW2022Operable · As of September 2026 (EIA-860M): (OP) Operating
HAU9Conventional HydroelectricWAT3.5 MWProposed, planned start 2028 · As of September 2026 (EIA-860M): (P) Planned for installation, but regulatory approvals not initiated

U.S. Energy Information Administration · Monthly Update to the Annual Electric Generator Report (Form EIA-860M) · data for 2026-09 · as of Oct 23, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0

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