Chicago West Side Energy Center
Natural gas power plant in Cook County, Illinois. 3.5 MW of nameplate capacity across 1 generator, operated by Energy Systems Group LLC.
Also known as EIA plant 59794
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Key facts
- Capacity
- 3.5 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- October 2003First generator online
- Operator
- Energy Systems Group LLCEIA operator ID 58303
- Grid
- PJMBalancing authority PJM
- Price nodes
- None linkedNo verified ISO node
- Location
- Cook County, IL41.8708, −87.6784
- EIA plant ID
- 59794EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Chicago West Side produces
Free · EIA-923Net generation, 2025
17.4 GWh
17,396 MWh, final
Capacity factor, 2025
56.7%
2024: 49.4%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
0.0–19.2
GWh a year. Low 2021, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | 18,755 | 61.2% | 12 of 12 |
| 2015 | 17,253 | 56.3% | 12 of 12 |
| 2016 | 19,195 | 62.4% | 12 of 12 |
| 2017 | 12,368 | 40.3% | 12 of 12 |
| 2018 | 18,576 | 60.6% | 12 of 12 |
| 2019 | 18,121 | 59.1% | 12 of 12 |
| 2020 | 16,061 | 52.2% | 12 of 12 |
| 2021 | 0 | 0.0% | 12 of 12 |
| 2022 | 17,085 | 55.7% | 12 of 12 |
| 2023 | 17,255 | 56.3% | 12 of 12 |
| 2024 | 15,192 | 49.4% | 12 of 12 |
| 2025 | 17,396 | 56.7% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GEN1 | Natural Gas Fired Combustion Turbine | 3.5 | October 2003 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Energy Systems Group LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Chicago West Side
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Questions about Chicago West Side
How much power does Chicago West Side Energy Center produce?
Chicago West Side Energy Center reported 17,396 MWh (17.4 GWh) of net generation in 2025, a 56.7% capacity factor on 3.5 MW of nameplate capacity.
Where is Chicago West Side Energy Center?
Chicago West Side Energy Center is in Cook County, Illinois, at 41.8708, −87.6784. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Chicago West Side Energy Center?
EIA-860M for August 2026 lists Energy Systems Group LLC as the operator (EIA operator ID 58303). The operator is not always the owner.
When did Chicago West Side Energy Center start operating?
Its first generator began operating in October 2003, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page