MWPowerPlantFacts
PowerPlantFactsEvidence report · prepared 2 September 2026https://powerplantfacts.com/entity/2193
EIA plant 2193

Great Falls · Cascade · MT

Rainbow (MT)

Operated by NorthWestern Energy (MT Hydro)

Annual generation328,967 MWhSum of represented EIA-923 rows
Fuel codesWATCodes retained from EIA records
Grid contextNorthWestern Energy (NWMT)Balancing authority or NERC region

Published location

Where is Rainbow (MT)?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

47.534400, -111.204500

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Map data © OpenStreetMap contributors

Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.

2024 monthly net generation

MonthNet generation
132,864 MWh
230,238 MWh
329,588 MWh
415,265 MWh
534,075 MWh
639,950 MWh
722,926 MWh
827,644 MWh
926,588 MWh
1023,744 MWh
1122,842 MWh
1223,243 MWh

Operating generators

IDTechnologyFuelMWStatus
RAI9Conventional HydroelectricWAT59OP

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Identity, technology and limitations
EIA plant ID
2193
Sector
Electric Utility
Water source
Missouri River
Data edition
2024-final