Chicago West Side Energy Center
Cook County, Illinois · EIA plant ID 59794 · Operator: Energy Systems Group LLC
Nameplate4MWSummer 4 MW
Generators1in service
Net generation17GWh12 mo to Dec 2025
Capacity factor57%gas/coal/oil units, summer MW
Heat rate6,130Btu/kWhfossil units, electric fuel, HHV
First online2003Runs as baseload
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2014 | 18.8 | 61.2% | 16,462 |
| 2015 | 17.3 | 56.3% | 12,905 |
| 2016 | 19.2 | 62.4% | 6,188 |
| 2017 | 12.4 | 40.3% | 6,369 |
| 2018 | 18.6 | 60.6% | 6,143 |
| 2019 | 18.1 | 59.1% | 6,122 |
| 2020 | 16.1 | 52.2% | 6,195 |
| 2021 | 0 | 0.0% | — |
| 2022 | 17.1 | 55.7% | 6,166 |
| 2023 | 17.3 | 56.3% | 6,149 |
| 2024 | 15.2 | 49.4% | 6,143 |
| 2025 | 17.4 | 56.7% | 6,130 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Natural Gas Fired Combustion Turbine | GT | 3.5 | 3.5 | Oct 2003 | Operating | — | coming soon |
Owner / operator
Operator: Energy Systems Group LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Amalgamated Bank of Chicago | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| University of Illinois Cogen Facility | 60 MW | 2.2 km |
| ESIL-PFCHICAGO 3, LLC | 1 MW | 2.5 km |
| IL Chicago 2635 S Western Ave. (West) | 2 MW | 3 km |
| Fisk Street | 260 MW | 3 km |
| Presence Saint Mary of Nazareth Hospital | 5 MW | 3.6 km |
| MPEA Energy Center | 6 MW | 5.3 km |