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124.8 MW Hydro operating in Lee, IA
124.8 MW
Nameplate Capacity
15
Generators
units
Conventional Hydroelectric
Technology
1913
Operating Since
Coordinates
40.3965, -91.3719
County
Lee, IA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Union Electric Co - (MO) | Union Electric | Ameren Missouri |
| Owner(s) | Union Electric Co - (MO) | Ameren | — |
| Status | Operating | operating | — |
The Keokuk hydroelectric plant, located in Lee County, Iowa, has a total capacity of 124.8 MW. It began operating in 1913 and utilizes conventional hydroelectric technology. The plant consists of 15 generators and is fueled by water (WAT). It is owned by Ameren and operated by Union Electric Co - (MO). Keokuk is the largest hydroelectric plant in Iowa, and ranks 156th nationally among 194 hydroelectric facilities.
In the most recent year with available data, Keokuk generated 888,279 MWh, achieving a capacity factor of 80.2%. The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the SERC NERC region. Financial data indicates an installed cost of $1773.28 per kW. The plant's financial information is sourced from FERC filings.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
69.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
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.
65.9K MWh
Latest Month
888.3K MWh
Annual Generation
80.2%
Capacity Factor
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Run-of-river hydro · UNION ELECTRIC COMPANY · Data from 2015–2024
$2,032/kW
Installed Cost
$4.9/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
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Point of Interconnection
Nearest Substation
Keokuk
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
AMMO.KEOKUK10
Pricing Hub
MINN.HUB
Alt. Hub / Zone
ILLINOIS.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
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 2026-03-14
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American Hydro awarded rehabilitation contract to modernize two generating units at the Keokuk Hydroelectric plant
source