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33.4 MW Natural Gas Steam Turbine (28 MW) + Petroleum Liquids (5 MW) operating in Cook, IL
33.4 MW
Nameplate Capacity
5
Generators
units
Hybrid (2)
Technology
Natural Gas Steam Turbine + Petroleum Liquids
1948
Operating Since
Coordinates
42.1155, -87.7312
County
Cook, IL
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Village of Winnetka - (IL) | — | — |
| Owner(s) | Village of Winnetka - (IL) | — | — |
| Status | Operating | — | — |
The Winnetka power plant, located in Cook County, Illinois, has a total capacity of 33.4 MW across five generators. The plant began operating in 1948 and is owned and operated by the Village of Winnetka. The primary fuel source is natural gas, utilizing natural gas steam turbine technology, with petroleum liquids also listed as a fuel. The plant is considered a hybrid facility.
In the most recent year of reported data, the Winnetka plant generated 2,668 MWh, resulting in a capacity factor of 0.9%. The plant operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region. It is ranked as the 40th largest power plant in Illinois out of 67, and 1219th nationally out of 1963.
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
12.5 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.
140 MWh
Latest Month
2.7K MWh
Annual Generation
0.9%
Capacity Factor
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CO₂ Intensity
1660 lb/MWh
NOx
4 lb/MWh
SO₂
0.093 lb/MWh
CH₄
0.034 lb/MWh
N₂O
0.004 lb/MWh
Capacity Factor
1.3%
Annual Net Gen
4 GWh
CO₂eq
1662 lb/MWh
Subregion
RFC West
2013
$965/kW
Est. Construction Cost
Total estimated cost: $32.2M
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Point of Interconnection
Nearest Substation
Happ Substation · 138 kV
Substation Distance
0.9 km
Operator
Commonwealth Edison
Coord Source
OSM spatial
Market Position
ISO/RTO Market
PJM
LMP Node
WINNETKA
Pricing Hub
N ILLINOIS HUB
Location Type
AGGREGATE
Node Source
Curated node match
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.
Last updated 2026-03-26
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