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Waterloo

Monroe County, Illinois · EIA plant ID 971 · Operator: City of Waterloo - (IL)
Natural gasNatural Gas Fired Combustion TurbinePetroleum Liquids⛽ Dual-fuelMISOBA: MISO
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Nameplate38MWSummer 36 MW
Generators14in service
Net generation1GWh12 mo to Dec 2025
Capacity factor0%gas/coal/oil units, summer MW
Heat rate12,250Btu/kWhfossil units, electric fuel, HHV
First online1946Runs as rarely runs

Monthly net generation

EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
050100150200MWh2001200320052007200920112013201520172019202120232025

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%1%1%200520102015202020250.3% · 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.
7,50010,00012,50015,0002005201020152020202512,250 Btu/kWh · 12 mo
Annual data table
YearNet GWhCapacity factorHeat rate (Btu/kWh)
20010.1——
20020.5——
20030.50.3%11,405
20040.50.3%8,867
20051.81.3%11,949
20060.40.3%11,924
20070.40.3%12,010
20080.50.3%12,286
20090.30.2%13,155
20100.20.1%12,485
20110.60.4%12,004
20120.60.3%10,237
20130.50.2%15,248
20140.80.3%12,513
20150.40.1%8,569
20160.20.1%15,809
20170.60.3%10,954
20180.50.2%12,143
20190.50.2%13,083
20200.50.2%12,088
20211.10.4%8,846
20220.60.2%12,038
20230.50.2%11,816
20240.50.2%11,823
20250.80.3%12,250

Fuel capability

Gas-fired turbines (CT/GT/CA/CS) that can also burn liquid fuel. EIA-860 Schedule 3 for capability, EIA-923 for actual burn.
StatusLikely still dual fuel
Liquid fuel burned · 36 mo648 MMBtu
Last month with liquid burnDec 2025
Switch while operatingYes
Net summer MW on gas13
Net summer MW on oil13
Time gas → oilup to 1 h (EIA 1H)
Time oil → gasup to 1 h (EIA 1H)

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
1Petroleum LiquidsIC3.12.7May 1970Operating (Standby / backup)—coming soon
10Petroleum LiquidsIC1.81.8Jun 1996Operating—coming soon
11Petroleum LiquidsIC1.81.8Jun 1996Operating—coming soon
12Natural Gas Fired Combustion TurbineGT6.66.6May 2002Operating—coming soon
13Natural Gas Fired Combustion TurbineGT76.6May 2012Operating—coming soon
14Natural Gas Fired Combustion TurbineGT87.5Jan 2026Operating—coming soon
2Petroleum LiquidsIC0.20.2Jun 1954Operating (Out of service)—coming soon
3Petroleum LiquidsIC0.20.2Jun 1946Operating (Out of service)—coming soon
4Petroleum LiquidsIC21.8May 1963Operating (Standby / backup)—coming soon
5Petroleum LiquidsIC0.50.4Jun 1950Operating (Out of service)—coming soon
6Petroleum LiquidsIC0.50.5Jun 1950Operating (Out of service)—coming soon
7Petroleum LiquidsIC1.71.5Jun 1959Operating (Standby / backup)—coming soon
8Petroleum LiquidsIC32.4Apr 1973Operating (Standby / backup)—coming soon
9Petroleum LiquidsIC1.81.8Jun 1996Operating—coming soon

Owner / operator

Operator: City of Waterloo - (IL). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
City of Waterloo - (IL)100.0%38 MW

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Within 80 km.
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Millstadt IL 1, LLC3 MW19.2 km
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SV CSG Reifschneider I B, LLC2 MW21.2 km