Cordova Energy — 611 MW gas plant, Rock Island County, IL

Cordova Energy — 611 MW gas plant, Rock Island County, IL · Ask the Grid

Generation and physical site

EIA plant 55188 · Inventory for Sep 2026.

Reported operating nameplate by technology

Natural gas: 611.2 MW

Operating generators only. Battery power is in MW; stored energy is in MWh. These ratings do not establish a shared export limit.

Generator records (3)

EIA generator status and nameplate capacity for Cordova Energy
Generator	Technology	Status	Power (MW)	Energy (MWh)
PT11	Natural Gas Fired Combined Cycle	Operating	210	Unknown
PT21	Natural Gas Fired Combined Cycle	Operating	210	Unknown
PT31	Natural Gas Fired Combined Cycle	Operating	191.2	Unknown

Physical map location · OpenStreetMap: 41.71173, -90.27993
Filed location · EIA: 41.71222, -90.27968

Sources and observation dates

Inventory source: EIA-860M workbook (preliminary)
EIA reporting month: Sep 2026
EIA retrieved: Oct 24, 2026
OSM extract: Oct 9, 2026
OSM last mapped edit: Apr 23, 2023
Map prepared: Oct 24, 2026
Field verification: Not reported

Reporting month describes the inventory. Retrieval and map preparation describe processing; an OSM edit does not establish an in-service date.

EIA source inventory

Units and generators

Current generator records and technology attributes reported through EIA-860.

Generator	Capacity	Technology	Operation	Status
PT11	210 MW 165 MW summer	Natural Gas Fired Combined Cycle CT	Jun 2001	Operating
PT21	210 MW 165 MW summer	Natural Gas Fired Combined Cycle CT	Jun 2001	Operating
PT31	191.2 MW 191.2 MW summer	Natural Gas Fired Combined Cycle CA	Jun 2001	Operating

Commercial, land, and environmental record

Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.

Transactions and agreements

EPC Contract

Date not disclosed

EPC contractor responsible for engineering, procurement, and construction of a $208 million, 530 MW combined-cycle plant in Illinois.

$208.0M530 MW contractedCordova Energy Company LLC

Source

PPA Acceptance And Assignment

Sep 11, 2001

Illinois regulatory filing states Cordova entered into a multi-year tolling power sales agreement with El Paso Merchant Energy, L. P. fully committing all capacity and energy from Cordova Facility. FERC accepted agreement by letter order dated September 11, 2001; agreement was later assigned to a subsidiary of Exelon Corporation.

Cordova Energy Company LLC · El Paso Merchant Energy, L.P. · Exelon Corporation

Source

Capacity Offtake Agreement

Aug 4, 2025

MidAmerican Energy Company and Cordova entered into a one-year capacity purchase agreement for MidAmerican to purchase 100% of MISO Zonal Resource Credits generated by Cordova's combined-cycle plant for the 2027-2028 MISO Planning Year. Pricing tied to MISO Planning Resource Auction clearing price for MISO Resource Adequacy Zone 3.

1 yearsMidAmerican Energy Company · Cordova Energy Company LLC

Source

Land and environmental record

Cooling Water Source

Nov 5, 2025

Four on-site groundwater wells supply the cooling tower

The 2025 Illinois EPA NPDES fact sheet states that groundwater from four on-site wells is used for the cooling tower.

NPDES Permit No. IL0074438 Notice No. SAJ:25010601.docx Public Notice Beginning Date: November 5, 2025 Public Notice Ending Date: December 05,

County Appraisal Record

PIN 010305200001; appraised valuation $3,816,512 (historical record)

Rock Island County taxpayer records list Cordova Energy Company against parcel/PIN 010305200001 with a listed valuation of $3,816,512. Also appears in historical taxing body records as PIN 061805313015 with valuation $4,264,187.

Source

NPDES Permit

Nov 5, 2025

NPDES Permit IL0074438

Illinois EPA issued a draft reissued NPDES permit for Cordova Energy Company LLC at 24712 192nd Avenue North, Cordova, Illinois 61242. Public-notice period ran from November 5 through December 5, 2025. Final permit issue and effective dates not stated in retrieved notice.

NPDES Permit No. IL0074438 Notice No. SAJ:25010601.docx Public Notice Beginning Date: November 5, 2025 Public Notice Ending Date: December 05,

Permitted Discharge Flow

Nov 5, 2025

1.01 MGD total plant effluent; 0.9 MGD cooling-tower blowdown; 0.075 MGD low-volume waste

2025 draft NPDES fact sheet identifies average flows of 1.01 million gallons per day at outfall 001 (total plant effluent), 0.9 MGD at internal outfall A01 (cooling-tower blowdown), and 0.075 MGD at internal outfall B01 (low-volume waste).

NPDES Permit No. IL0074438 Notice No. SAJ:25010601.docx Public Notice Beginning Date: November 5, 2025 Public Notice Ending Date: December 05,

Reported Greenhouse Gas Emissions

2024

2024 CO2e emissions: 476,660 tCO2e (Unit 1: 249,089 tCO2e; Unit 2: 227,571 tCO2e)

Illinois EPA's 2024 CEJA emissions report lists Cordova Energy Company Unit 1 at 249,089 tons CO2e and Unit 2 at 227,571 tons CO2e for a combined 476,660 tons CO2e.

Source

Mapped facility footprint

Mapped infrastructure geometry associated with this asset.© OpenStreetMap contributors · way/282506431

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

1999
1999
Project company formation and construction startMidAmerican...
Cordova Energy Company was formed to manage construction and day-to-day operation of the Cordova Energy Center. Construction began in fall 1999 under MidAmerican Energy Holdings.
Jun 2001
Jun 2001
Generators enter operationEIA-860
EIA-860 lists generator PT11, generator PT21, generator PT31 with this operating date.
Jun 13, 2001
Jun 13, 2001
Plant DedicationMidAmerican...
MidAmerican Energy Holdings announced the dedication of the new 537-MW Cordova Energy Center. The announcement reported a $270 million plant cost and stated that commercial operation would begin later that month.

Sources

PublisherReferenceType

U.S. Energy Information AdministrationEIA-860 generator inventoryFederal registry

U.S. Energy Information AdministrationEIA-923 generation filingsFederal filing

bherenewables.comBHE Renewablesother

Common questions about Cordova Energy

Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.

How big is Cordova Energy?

Cordova Energy reports 611.2 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.

What kind of plant is Cordova Energy?

Cordova Energy is a Natural Gas Fired Combined Cycle facility in Rock Island County, IL, participating in the PJM market.

Where is Cordova Energy located?

Cordova Energy is in Rock Island County, IL, inside the PJM balancing area.

Who operates Cordova Energy?

Cordova Energy is operated by Cordova Energy Co LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Cordova Energy generate?

Cordova Energy reported 1,150.3 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.

Where does Cordova Energy connect to the grid?

Cordova Energy interconnects at TSS 940 Cordova 345 kV substation, on the Commonwealth Edison (ComEd) system.

How does Cordova Energy compare to other plants?

By capacity, Cordova Energy ranks #240 of 540 operating plants of the same technology nationally. It ranks #6 of 8 in IL.

Co-located assets

Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.

Quad Cities Generating StationNuclearNuclear2,019 MW3 km Clover - (IL) CSGSolar PhotovoltaicSolar Photovoltaic5 MW17 km

Overview

Overview

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Reported operating nameplate by technology

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Units and generators

Performance

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Commercial, land, and environmental record

Transactions and agreements

Land and environmental record

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Relationship graph

Parties and identifiers

Reporting portfolio

Timeline and sources

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Sources

Common questions about Cordova Energy

How big is Cordova Energy?

What kind of plant is Cordova Energy?

Where is Cordova Energy located?

Who operates Cordova Energy?

How much electricity does Cordova Energy generate?

Where does Cordova Energy connect to the grid?

How does Cordova Energy compare to other plants?

Co-located assets

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