South Main Street — Plant Summary
- EIA Plant ID
- 961
- Capacity
- 15.8 MW
- Primary Fuel
- Oil
- Technology
- Natural Gas Internal Combustion Engine, Petroleum Liquids
- Status
- Standby
- Location
- Ogle, IL
- Operating Since
- 1967
- Generators
- 8
- Operator
- Rochelle Municipal Utilities
- Parent Company
- —
- Annual Generation
- 1,292.99 MWh
- Capacity Factor
- 0.9%
- Balancing Authority
- PJM Interconnection, LLC
- ISO/RTO
- PJM
- NERC Region
- RFC
South Main Street
StandbyDistillate OilNatural GasHybrid
Ranked #9 of 33 Distillate Oil plants in IL#197 of 827 nationally
15.8 MW Natural Gas Internal Combustion Engine (5 MW) + Petroleum Liquids (11 MW) standby in Ogle, IL — PJM Interconnection, LLC
EIAWD
15.8 MW
Nameplate Capacity
8
Generators
units
Hybrid (2)
Technology
Natural Gas Internal Combustion Engine + Petroleum Liquids
1967
Operating Since
Location
Coordinates
41.9092, -89.0504
County
Ogle, IL
Nearby Plants
- North Ninth StreetNatural Gas17.4 MW · 0.1 km
- Woodward Power PlantHydro2.8 MW · 0.3 km
- IL Rochelle 975 S. Caron RdSolar1.5 MW · 0.5 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Rochelle Municipal Utilities | — | — |
| Owner(s) | Rochelle Municipal Utilities | — | — |
| Status | Standby | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
South Main Street is a 15.8 MW hybrid power plant located in Ogle County, Illinois. The plant began operating in 1967 and is owned and operated by Rochelle Municipal Utilities. It utilizes both natural gas internal combustion engines and petroleum liquids as fuel sources. The plant consists of 8 generators.
The plant operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region. In the most recent year of data, South Main Street generated 1,293 MWh of electricity, achieving a capacity factor of 0.9%. Among similar plants in Illinois, South Main Street ranks 12th out of 35. Nationally, it ranks 239th out of 886.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC
Grid Voltage
138 kV
Regulatory Status
RE
Entity Type
Municipal
Sector
Electric Utility
Generation
154 MWh
Latest Month
1.3K MWh
Annual Generation
0.9%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
MEDIUM confidencePoint of Interconnection
Nearest Substation
Rochelle Municipal Utilites Power Substation · 138 kV
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
PJM
LMP Node
—
Pricing Hub
N ILLINOIS HUB
Node Source
Shared substation inference
Substation identified. Node ID not yet resolved against ISO roster.
PJM/ComEd.ROCHELLENearby ISO Node
News & Articles (10)Beta
Industry·corporate
Mass Casualty Chemical Exposure Response at Byron Nuclear Generating Station in Ogle County, Illinois
Area police, firefighters and paramedics from Ogle County responded about 4:41 p.m. Tuesday, March 10, 2026 to a report of a person with...
Byron Nuclear Generating Station (operator)
arlingtoncardinal.com·3 days ago
General
Fire Destroys Mobile Home, Camper, and Garage in Vernon
A fire spread between a mobile home, a camper, and a garage at a Vernon home Friday night. Patoka Fire Chief B...
southernillinoisnow.com·3 weeks ago
Deals·other
Decatur City Council approves Broadwing Energy power plant deal
The Decatur City Council approved a development agreement Monday night for a proposed billion-dollar power plant.
WANDTV.com·4 weeks ago
General
US power grid faces stress test amid arctic chill, data center demand
The U.S. power grid faces an elevated risk of disruption over the next several days as an Arctic blast and reduced gas supplies test the...
Reuters·2 months ago
Last updated 2026-03-14
View all 10 articles