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Elwood Energy LLC

Will County, Illinois · EIA plant ID 55199 · Operator: Elwood Energy LLC
Natural gasNatural Gas Fired Combustion TurbinePJMBA: PJM
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Nameplate576MWSummer 450 MW
Generators3in service
Net generation539GWh12 mo to Aug 2026
Capacity factor5%gas/coal/oil units, summer MW
Heat rate11,447Btu/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
0100200300GWh2001200320052007200920112013201520172019202120232025

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.
0%5%10%200520102015202020254.6% · 12 mo

Heat rate by year

Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
9,00010,00011,00012,00013,0002005201020152020202511,447 Btu/kWh · 12 mo
Annual data table
YearNet GWhCapacity factorHeat rate (Btu/kWh)
20014024.8%10,486
2002524.64.4%10,942
2003213.11.8%11,211
20041991.7%11,480
2005435.73.7%12,449
2006213.81.8%10,819
2007310.82.6%10,281
2008132.61.1%10,961
2009157.31.3%10,958
2010555.44.7%10,841
2011315.52.7%10,903
2012814.86.9%10,935
2013278.32.4%12,078
2014287.22.4%11,032
2015568.54.8%11,206
20161,196.210.1%11,350
2017358.43.0%11,527
2018356.33.0%11,740
2019249.12.1%12,319
2020392.23.3%11,559
2021836.67.1%11,711
2022158.61.3%11,928
2023945.88.0%11,131
2024216.51.8%11,855
2025191.74.9%13,262

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 IDTechnologyPrime moverNameplate MWSummer MWOnlineStatusPlanned retirementOEM / model
GT5Natural Gas Fired Combustion TurbineGT192150Jul 2001Operating—coming soon
GT6Natural Gas Fired Combustion TurbineGT192150Jul 2001Operating—coming soon
GT7Natural Gas Fired Combustion TurbineGT192150Aug 2001Operating—coming soon
GT1Natural Gas Fired Combustion TurbineGT192150Jul 1999not_currentJul 2026coming soon
GT2Natural Gas Fired Combustion TurbineGT192150Jul 1999not_currentJul 2026coming soon
GT3Natural Gas Fired Combustion TurbineGT192150Jul 1999not_currentJul 2026coming soon
GT4Natural Gas Fired Combustion TurbineGT192150Jul 1999not_currentJul 2026coming soon
GT8Natural Gas Fired Combustion TurbineGT192150Aug 2001not_currentJun 2025coming soon
GT9Natural Gas Fired Combustion TurbineGT192150Jul 2001not_currentJun 2025coming soon

Owner / operator

Operator: Elwood Energy LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
J Power USA Development Co Ltd100.0%576 MW

Nearby plants

Within 80 km.
MPH Elwood384 MW0.2 km
Jackson Generation, LLC1,289 MW1.1 km
ExxonMobil Oil Joliet Refinery43 MW5.6 km
Jake Energy Storage Centerretired5.7 km
Joliet 9retired6.1 km
Joliet 29retired6.2 km