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596.7 MW Natural Gas operating in Lake, IL
596.7 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combustion Turbine
Technology
2002
Operating Since
Coordinates
42.4776, -87.8950
County
Lake, IL
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Zion Energy LLC | Zion Energy | — |
| Owner(s) | Zion Energy LLC | Constellation Energy | — |
| Status | Operating | — | — |
Zion Energy Center is a 596.7 MW natural gas-fired power plant located in Lake County, Illinois. The plant began operating in 2002 and is owned by Constellation Energy. The operator listed with the EIA is Zion Energy LLC. The facility utilizes natural gas-fired combustion turbine technology across its three generators. Zion Energy Center is connected to the PJM Interconnection, LLC balancing authority and resides within the ReliabilityFirst Corporation (RFC) NERC region.
In the most recent year of reported data, Zion Energy Center generated 363,610 MWh of electricity, achieving a capacity factor of 6.9%. The plant is ranked as the 14th largest in Illinois out of 32 plants, and nationally it is ranked 405th out of 945 plants.
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
345.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
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.
10.8K MWh
Latest Month
363.6K MWh
Annual Generation
6.9%
Capacity Factor
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CO₂ Intensity
1339 lb/MWh
NOx
0.380 lb/MWh
SO₂
0.007 lb/MWh
CH₄
0.025 lb/MWh
N₂O
0.003 lb/MWh
Capacity Factor
5.9%
Annual Net Gen
311 GWh
CO₂eq
1340 lb/MWh
Subregion
RFC West
2013
$965/kW
Est. Construction Cost
Total estimated cost: $575.9M
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Market Position
ISO/RTO Market
PJM
LMP Node
974 ZION18 KV ZE11
Pricing Hub
N ILLINOIS HUB
Location Type
Generation Node
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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