Cass County Renewable Energy Center — Plant Summary
- EIA Plant ID
- 68771
- Capacity
- 150 MW
- Primary Fuel
- Solar
- Technology
- Solar Photovoltaic
- Status
- Operating
- Location
- Cass, IL
- Operating Since
- 2024
- Generators
- 1
- Operator
- Union Electric Co - (MO)
- Parent Company
- Ameren
- Annual Generation
- 331,772 MWh
- Capacity Factor
- 25.2%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- SERC
Cass County Renewable Energy Center
OperatingSolar
Ranked #12 of 325 Solar plants in IL#509 of 7447 nationally
150 MW Solar operating in Cass, IL — Midcontinent Independent Transmission System Operator, Inc..
EIAGEM
150 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2024
Operating Since
Location
Coordinates
39.9778, -90.4711
County
Cass, IL
Nearby Plants
- USS Beard SolarSolar3.5 MW · 10.1 km
- Morgan Solar 1b CSGSolar2 MW · 18.6 km
- Morgan Solar 1 CSGSolar2 MW · 18.7 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Union Electric Co - (MO) | Union Electric Co | — |
| Owner(s) | Union Electric Co - (MO) | Ameren | — |
| Status | Operating | operating | — |
Ownership Chain
About
The Cass County Renewable Energy Center is a 150 MW solar photovoltaic power plant located in Cass County, Illinois. The plant began operating in 2024 and has one generator. It is owned by Ameren and operated by Union Electric Co. (MO), a subsidiary of Ameren. The facility utilizes single-axis tracking technology to maximize solar energy capture.
The plant's latest annual generation was 331,772 MWh, resulting in a capacity factor of 25.2%. The installed cost was $2,089.91 per kW, according to FERC data. The Cass County Renewable Energy Center is interconnected to the Midcontinent Independent Transmission System Operator (MISO) balancing authority and is located within the SERC NERC region. It is the 9th largest solar plant in Illinois out of 19, and ranks 399th nationally out of 639 solar plants.
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
138 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
12.1K MWh
Latest Month
331.8K MWh
Annual Generation
25.2%
Capacity Factor
Financial DataBeta
Source: FERC Form 1HIGH
$2,090/kW
Installed Cost
UNION ELECTRIC COMPANY
Reporting Utility
Pricing & Market Data
HIGH confidenceMarket Position
ISO/RTO Market
MISO
LMP Node
AMMO
Pricing Hub
ILLINOIS.HUB
Node Source
EIA-860 direct report
News & Articles (5)Beta
Industry·corporate
Ameren Missouri makes $950M investment in three solar generation facilities
Ameren Missouri has invested $950 million in three recently opened solar generation projects, which generate 500 megawatts (MW) of energy for its customers.
Ameren Missouri (developer)
Daily Energy Insider·1 years ago
Regulatory·state puc
Ameren Missouri approved to build 800 MW simple-cycle facility at former coal site
The Castle Bluff Energy Center is expected to be ready to serve as a backup source of energy in 2027, and represents an investment of...
Ameren (operator)Missouri Public Service Commission (regulator)
Power Engineering·1 years ago
Industry·corporate
Ameren announces milestones in reliable energy investments
Ameren Missouri receives approval to build vital dispatchable energy source and closes on three solar generation projects in 2024.
Ameren (operator)Ameren Missouri (operator)
PR Newswire·1 years ago
Regulatory·state puc
Ameren Missouri's $900M backup energy plant gets state regulators' approval
The Missouri Public Service Commission on Wednesday approved Ameren Missouri's planned 800 megawatt natural-gas-powered backup electric...
Ameren Missouri (developer)Missouri Public Service Commission (regulator)
The Business Journals·1 years ago
Last updated 2026-03-14
View all 5 articles