Keokuk — Plant Summary
- EIA Plant ID
- 1109
- Capacity
- 124.8 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Lee, IA
- Operating Since
- 1913
- Generators
- 15
- Operator
- Union Electric Co - (MO)
- Parent Company
- Ameren
- Annual Generation
- 888,279 MWh
- Capacity Factor
- 80.2%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- SERC
Keokuk
OperatingHydro
Ranked #1 of 4 Hydro plants in IA#156 of 1454 nationally
124.8 MW Hydro operating in Lee, IA — Midcontinent Independent Transmission System Operator, Inc..
EIAGEMWD
124.8 MW
Nameplate Capacity
15
Generators
units
Conventional Hydroelectric
Technology
1913
Operating Since
Location
Coordinates
40.3965, -91.3719
County
Lee, IA
Nearby Plants
- Roquette AmericaNatural Gas84.4 MW · 2.1 km
- KahokaDistillate Oil7.4 MW · 29.7 km
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 | Union Electric Co - (MO) | Union Electric | Ameren Missouri |
| Owner(s) | Union Electric Co - (MO) | Ameren | — |
| Status | Operating | operating | — |
Ownership Chain
About
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
Engineering & Generators
Grid Context
NERC Region
SERC
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
69 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
65.9K MWh
Latest Month
888.3K MWh
Annual Generation
80.2%
Capacity Factor
Jan 2022 – Dec 2024
Financial DataBeta
Source: FERC Form 1HIGH
$2,032/kW
Installed Cost
$4.9/MWh
Operating Cost
UNION ELECTRIC COMPANY
Reporting Utility
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidencePoint 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
Location Type
Generation Node
Node Source
EIA-860 direct report
News & Articles (10)Beta
Regulatory·other
Keokuk plant faces second public-nuisance lawsuit from nearby residents
KEOKUK, Iowa (IOWA CAPITAL DISPATCH) - A second group of Keokuk residents have filed a potential class-action lawsuit against a...
Keokuk (other)
KCRG·6 months ago
Industry·other
Obituary information for Lester Platte, Jr
Lester Platte, Jr Obituary Lester Laurence "Larry" Platte, Jr., of Las Vegas, Nevada, and formerly of Keokuk, Iowa, died December 6, 2010, at North Vista...
Lester Platte, Jr (other)
Printy Funeral Home·6 months ago
Industry·other
Obituary information for Homer Lee Sherrill
Homer Lee Sherrill of Hamilton, Illinois, age 98, of Hamilton, Illinois, passed away on September 16, 2025, at River Hills Village in Keokuk...
Homer Lee Sherrill (other)
Printy Funeral Home·6 months ago
Regulatory·federal policy
America depends on hydroelectric power, but regulatory hurdles could take plants offline
Hydropower accounts for nearly 30% of utility-scale renewable energy in the US, but federal hurdles may prevent older hydroelectric plants from staying online.
KCUR·8 months ago
Last updated 2026-03-14
View all 10 articles