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15.8 MW Natural Gas Internal Combustion Engine (5 MW) + Petroleum Liquids (11 MW) standby in Ogle, IL
15.8 MW
Nameplate Capacity
8
Generators
units
Hybrid (2)
Technology
Natural Gas Internal Combustion Engine + Petroleum Liquids
1967
Operating Since
Coordinates
41.9092, -89.0504
County
Ogle, IL
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Rochelle Municipal Utilities - (IL) | — | — |
| Owner(s) | Rochelle Municipal Utilities | — | — |
| Status | Standby | — | — |
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
ISO/RTO
PJM
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC (PJM)
Grid Voltage
138.0 kV
Regulatory Status
RE — Regulated
Entity Type
Municipal
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.
154 MWh
Latest Month
1.3K MWh
Annual Generation
0.9%
Capacity Factor
Forward-looking generation outlook with probabilistic ranges across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
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CO₂ Intensity
1474 lb/MWh
Low-utilization plant — per-MWh rate is dominated by startup/standby emissions; not directly comparable to baseload averages.
NOx
32 lb/MWh
SO₂
2 lb/MWh
CH₄
0.066 lb/MWh
N₂O
0.013 lb/MWh
Capacity Factor
0.5%
Annual Net Gen
1 GWh
CO₂eq
1479 lb/MWh
Subregion
RFC West
2013
$965/kW
Est. Construction Cost
Total estimated cost: $15.2M
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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Point 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.
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.
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