Fort Peck — Plant Summary
- EIA Plant ID
- 6623
- Capacity
- 179.7 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- McCone, MT
- Operating Since
- 1943
- Generators
- 5
- Operator
- USACE-Omaha
- Parent Company
- —
- Annual Generation
- 751,635 MWh
- Capacity Factor
- 47.6%
- Balancing Authority
- Western Area Power Administration UGP West
- ISO/RTO
- —
- NERC Region
- WECC
Fort Peck
OperatingHydro
Ranked #6 of 23 Hydro plants in MT#105 of 1454 nationally
179.7 MW Hydro operating in McCone, MT — Western Area Power Administration UGP West
EIAGEMWD
179.7 MW
Nameplate Capacity
5
Generators
units
Conventional Hydroelectric
Technology
1943
Operating Since
Location
Coordinates
48.0122, -106.4123
County
McCone, MT
Ownership & Operator
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | USACE-Omaha | US Army Corps of Engineers - Omaha District | — |
| Owner(s) | USACE-Omaha | US Army Corps of Engineers - Omaha District [100%] | — |
| Status | Operating | operating | — |
Ownership Chain
GEM identifies the owner as US Army Corps of Engineers - Omaha District [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
About
The Fort Peck Dam is the highest of six major dams along the Missouri River, located in northeast Montana in the United States, near Glasgow, and adjacent to the community of Fort Peck. At 21,026 feet (6,409 m) in length and over 250 feet (76 m) in height, it is the largest hydraulically filled dam in the United States, and creates Fort Peck Lake, the fifth largest artificial lake in the U.S., more than 130 miles (210 km) long, 200 feet (61 m) deep, and it has a 1,520-mile (2,450 km) shoreline which is longer than the state of California's coastline. It lies within the Charles M. Russell National Wildlife Refuge. The dam and the 134-mile-long (216 km) lake are owned and operated by the U.S. Army Corps of Engineers and exist for the purposes of hydroelectric power generation, flood control, and water quality management.
Read more on WikipediaFort Peck is a 179.7 MW hydroelectric power plant located in McCone County, Montana. The plant began operating in 1943 and is owned and operated by USACE-Omaha. It utilizes conventional hydroelectric technology with water (WAT) as its primary fuel source. The facility consists of 5 generators.
In the most recent year of data, Fort Peck generated 751,635 MWh of electricity, achieving a capacity factor of 47.6%. The plant operates within the Western Area Power Administration UGP West balancing authority and the WECC NERC region. Fort Peck is the 6th largest of 6 hydroelectric plants in Montana, and ranks 105th out of 194 hydroelectric plants nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Western Area Power Administration UGP West
Grid Voltage
230 kV
Regulatory Status
RE
Entity Type
Federal
Sector
Electric Utility
Generation
50.4K MWh
Latest Month
751.6K MWh
Annual Generation
47.6%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (10)Beta
Last updated 2026-03-26
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