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320 MW Hydro operating in Charles Mix, SD
320 MW
Nameplate Capacity
8
Generators
units
Conventional Hydroelectric
Technology
1954
Operating Since
Coordinates
43.0653, -98.5539
County
Charles Mix, SD
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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 | — |
| Status | Operating | operating | — |
GEM identifies the owner as US Army Corps of Engineers - Omaha District
This entity is not yet in the GEM ownership database — chain unavailable.
US Army Corps of Engineers awarded Voith Hydro North America a contract for turbine and generator rehabilitation at Fort Randall Dam.
Fort Randall Dam is a 2.03-mile-long (3 km) earthen dam which spans the Missouri River and impounds Lake Francis Case, the 11th-largest reservoir in the U.S. The dam joins Gregory and Charles Mix counties, South Dakota, a distance of 880 river miles (1,416 km) upstream of St. Louis, Missouri, where the river joins the Mississippi River. The dam and hydroelectric power plant were constructed by and are currently operated by the U.S. Army Corps of Engineers.
Read more on WikipediaFort Randall is a 320 MW hydroelectric power plant located in Charles Mix County, South Dakota. The plant began operating in 1954 and consists of 8 generators utilizing conventional hydroelectric technology. It is owned and operated by USACE-Omaha.
The plant's primary fuel source is water (WAT). Fort Randall operates within the Southwest Power Pool (SPP) balancing authority and the Midwest Reliability Organization (MRO) NERC region. In the most recent year with available data, the plant generated 1,578,831 MWh, achieving a capacity factor of 56.1%. Fort Randall is the 3rd largest power plant in South Dakota and ranks 67th nationally out of 194 plants.
Generated from EIA, GEM, and public data sources
ISO/RTO
SPP
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
Southwest Power Pool (SWPP)
Grid Voltage
230.0 kV
Regulatory Status
RE — Regulated
Entity Type
Federal
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
62.3K MWh
Latest Month
1.6M MWh
Annual Generation
56.1%
Capacity Factor
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2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $734.2M
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Point of Interconnection
Nearest Substation
Fort Randall Substation · 230 kV
Substation Distance
0 km
Operator
Western Area Power Administration
Coord Source
OSM spatial
Market Position
ISO/RTO Market
SPP
LMP Node
WAUE.FTRANDALL.1_2
Pricing Hub
SPPNORTH_HUB
Location Type
Settlement Location
Node Source
Curated node match
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-04-19
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Contractor crane tipped over at Fort Randall Dam rehabilitation site; one person injured; Omaha District responding.
sourceFort Randall Dam undergoing its largest rehabilitation in history; all eight turbines and generators being fully replaced.
source