Joliet 29Retired
Will County, Illinois · EIA plant ID 384 · Operator: Midwest Generations EME LLC
×1,320 MW natural gas retired since 2020 (latest Sep 2023)
Nameplate—MWSummer — MW
Generators0in service
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online—
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), primary-fuel 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 | 4,835 | 53.3% | 10,669 |
| 2002 | 5,411.7 | 59.6% | 10,645 |
| 2003 | 6,199.6 | 68.3% | 10,280 |
| 2004 | 5,973.9 | 65.6% | 10,103 |
| 2005 | 5,498.5 | 60.6% | 10,037 |
| 2006 | 5,517.3 | 60.8% | 10,382 |
| 2007 | 5,415.7 | 59.7% | 10,547 |
| 2008 | 5,689.8 | 62.5% | 10,623 |
| 2009 | 6,192.8 | 68.2% | 10,566 |
| 2010 | 5,907.1 | 65.1% | 10,343 |
| 2011 | 5,907.5 | 65.1% | 10,693 |
| 2012 | 5,137.3 | 56.5% | 10,855 |
| 2013 | 5,650.4 | 62.3% | 10,643 |
| 2014 | 5,061.4 | 55.8% | 11,247 |
| 2015 | 5,466.8 | 60.2% | 10,636 |
| 2016 | 1,601.1 | 17.6% | 10,952 |
| 2017 | 321.8 | 3.5% | 10,087 |
| 2018 | 628.5 | 6.9% | 10,584 |
| 2019 | 1,419.5 | 15.6% | 10,524 |
| 2020 | 1,052.3 | 11.6% | 10,200 |
| 2021 | 701.8 | 7.7% | 10,909 |
| 2022 | 550.4 | 6.1% | 10,885 |
| 2023 | 707.8 | 11.7% | 10,998 |
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 |
|---|---|---|---|---|---|---|---|---|
| 7 | Natural Gas Steam Turbine | ST | 660 | 518 | Apr 1965 | Retired Sep 2023 | — | coming soon |
| 8 | Natural Gas Steam Turbine | ST | 660 | 518 | Mar 1966 | Retired Sep 2023 | — | coming soon |
Owner / operator
Operator: Midwest Generations EME LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Nearby plants
Within 80 km.
| Joliet 9 | retired | 0.7 km |
| Jake Energy Storage Center | retired | 1.4 km |
| IKEA Joliet Rooftop PV System | 2 MW | 4.8 km |
| Elwood Energy LLC | 576 MW | 6.2 km |
| Jackson Generation, LLC | 1,289 MW | 6.3 km |
| MPH Elwood | 384 MW | 6.4 km |