Marseilles Lock and Dam Hydro — Plant Summary
- EIA Plant ID
- 58903
- Capacity
- 10.4 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Under construction
- Location
- LaSalle, IL
- Operating Since
- —
- Generators
- 4
- Operator
- Marseilles Land and Water Company
- Parent Company
- —
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- MRO
Marseilles Lock and Dam Hydro
Under constructionHydro
Ranked #2 of 8 Hydro plants in IL#640 of 1454 nationally
10.4 MW Hydro under construction in LaSalle, IL — Midcontinent Independent Transmission System Operator, Inc..
EIAWD
10.4 MW
Nameplate Capacity
4
Generators
units
Conventional Hydroelectric
Technology
—
Operating Since
Location
Coordinates
41.3278, -88.7011
County
LaSalle, IL
Nearby Plants
- LaSalle Generating StationNuclear2340 MW · 9.5 km
- Dayton HydroHydro3.6 MW · 10.0 km
- Grand Ridge Battery ProjectsBESS36 MW · 11.3 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Marseilles Land and Water Company | — | — |
| Owner(s) | Marseilles Land and Water Company | — | — |
| Status | Under construction | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Marseilles Hydro Plant, also known as the Marseilles Hydro Development or the Marseilles Hydro Power Station, is a historic hydroelectric power station along the Illinois River in Marseilles, Illinois, USA.
Read more on WikipediaMarseilles Lock and Dam Hydro is a hydroelectric power plant located in LaSalle County, Illinois. The plant has a total capacity of 10.4 MW, distributed across four generators. It is owned and operated by Marseilles Land and Water Company. The primary fuel source for the plant is water (WAT), utilizing conventional hydroelectric technology.
The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority, situated in the Midwest Reliability Organization (MRO) NERC region. Marseilles Lock and Dam Hydro holds the rank of 2 out of 8 hydroelectric plants in Illinois, and ranks 650 out of 1464 nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
MRO
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
34.5 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
No generation data available for this plant.
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Marseilles Substation · 138 kV
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
—
Pricing Hub
ILLINOIS.HUB
Node Source
OSM spatial match
Substation identified. Node ID not yet resolved against ISO roster.
News & Articles (4)Beta
Hazards·wildfire
Generator fire extinguished at Starved Rock hydroelectric plant
A generator caught fire Tuesday morning at the hydroelectric plant at the Starved Rock Lock and Dam outside of Utica.
Shaw Local·2 years ago
Industry·other
As if COVID-19 Wasn’t Enough, the Illinois River System Faces Lock Closures
By Wessley Johnson – As if COVID-19 was not enough this summer, a full river closure and a halt to shipping on one of the nation's busiest...
gCaptain·5 years ago
Industry·other
Illinois River closures on schedule for this summer despite pandemic
The coronavirus pandemic is not expected to disrupt this summer's lock and dams closures along the Illinois Waterway, the Army Corps of...
Army Corps of (other)
WorkBoat·5 years ago
Industry·construction
The power of water
The new 10.26-megawatt hydroelectric power plant will be constructed on the Illinois River in Marseilles. Construction will begin this summer.
Shaw Local·14 years ago
Last updated 2026-03-14
View all articles