Aurora
DuPage County, Illinois · EIA plant ID 55279 · Operator: Aurora Generation LLC
Nameplate1,086MWSummer 990 MW
Generators10in service
Net generation404GWh12 mo to Aug 2026
Capacity factor4%gas/coal/oil units, summer MW
Heat rate10,914Btu/kWhfossil units, electric fuel, HHV
First online2001Runs as peaking
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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) |
|---|---|---|---|
| 2001 | 162.8 | 4.0% | 10,621 |
| 2002 | 218.6 | 3.0% | 10,482 |
| 2003 | 81.1 | 1.0% | 10,632 |
| 2004 | 53.1 | 0.7% | 10,375 |
| 2005 | 307.7 | 3.9% | 10,552 |
| 2006 | 89 | 1.2% | 10,403 |
| 2007 | 186.4 | 2.4% | 10,632 |
| 2008 | 64.9 | 0.8% | 10,370 |
| 2009 | 15.1 | 0.2% | 10,518 |
| 2010 | 31.8 | 0.4% | 10,710 |
| 2011 | 53 | 0.7% | 11,491 |
| 2012 | 74.8 | 1.0% | 11,762 |
| 2013 | 51.2 | 0.7% | 12,416 |
| 2014 | 49.7 | 0.7% | 12,370 |
| 2015 | 43.8 | 0.6% | 12,899 |
| 2016 | 382.1 | 4.7% | 10,890 |
| 2017 | 382.8 | 4.7% | 11,115 |
| 2018 | 677.8 | 8.2% | 10,470 |
| 2019 | 650.7 | 7.8% | 10,097 |
| 2020 | 768.8 | 8.9% | 9,954 |
| 2021 | 774.2 | 9.1% | 10,169 |
| 2022 | 339.1 | 4.0% | 10,511 |
| 2023 | 415.3 | 4.9% | 10,346 |
| 2024 | 354.9 | 4.1% | 10,891 |
| 2025 | 498.7 | 5.8% | 10,688 |
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 |
|---|---|---|---|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combustion Turbine | GT | 180.8 | 173.6 | Jun 2002 | Operating | — | coming soon |
| CTG10 | Natural Gas Fired Combustion Turbine | GT | 60.5 | 51.6 | Jun 2001 | Operating | — | coming soon |
| CTG2 | Natural Gas Fired Combustion Turbine | GT | 180.8 | 168.1 | Jun 2001 | Operating | — | coming soon |
| CTG3 | Natural Gas Fired Combustion Turbine | GT | 180.8 | 168.7 | Jun 2001 | Operating | — | coming soon |
| CTG4 | Natural Gas Fired Combustion Turbine | GT | 180.8 | 168.3 | May 2001 | Operating | — | coming soon |
| CTG5 | Natural Gas Fired Combustion Turbine | GT | 60.5 | 51.7 | May 2001 | Operating | — | coming soon |
| CTG6 | Natural Gas Fired Combustion Turbine | GT | 60.5 | 51.8 | May 2001 | Operating | — | coming soon |
| CTG7 | Natural Gas Fired Combustion Turbine | GT | 60.5 | 52.3 | Jun 2001 | Operating | — | coming soon |
| CTG8 | Natural Gas Fired Combustion Turbine | GT | 60.5 | 51.7 | May 2001 | Operating | — | coming soon |
| CTG9 | Natural Gas Fired Combustion Turbine | GT | 60.5 | 52.4 | Jun 2001 | Operating | — | coming soon |
| CT10 | Natural Gas Fired Combustion Turbine | GT | 71 | 45 | Jun 2001 | not_current | — | coming soon |
Owner / operator
Operator: Aurora Generation LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Aurora Generation LLC | 100.0% | 1,086 MW |
Nearby plants
Within 80 km.
| Nalco | 5 MW | 2.9 km |
| Aurora 7-SLCHI307 | — | 4 km |
| BP Naperville Cogeneration Facility | retired | 6.5 km |
| DS Containers | 2 MW | 6.5 km |
| WestRock (IL) | 3 MW | 6.7 km |
| Settlers Hill Gas Recovery | 6 MW | 8.1 km |