Dresden Generating Station — 2,019 MW nuclear plant, IL

Dresden Generating Station — 2,019 MW nuclear plant, IL · Ask the Grid

Generation and physical site

EIA plant 869 · Inventory for Sep 2026.

Reported operating nameplate by technology

Nuclear: 2,018.6 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 (2)

EIA generator status and nameplate capacity for Dresden Generating Station
Generator	Technology	Status	Power (MW)	Energy (MWh)
2	Nuclear	Operating	1,009.3	Unknown
3	Nuclear	Operating	1,009.3	Unknown

Physical map location · OpenStreetMap: 41.38985, -88.26856
Filed location · EIA: 41.39000, -88.27000

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: Jan 2, 2022
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
2	1,009.3 MW 902 MW summer	Nuclear ST	Aug 1970	Operating
3	1,009.3 MW 895 MW summer	Nuclear ST	Oct 1971	Operating

Related parties and identifiers

Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.

Relationship graph

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AssetOwner / operatorContractorOrganization

Parties and identifiers

OrganizationRoleBasis

Constellation Energy Generation, LLCOperatorOperator associated with Dresden Generating Station.

Reporting portfolio

EIA reporting entity

Constellation Nuclear

Entity 55951

Operating portfolio

12 plants

4 states

Reported capacity

22,817.3 MW

Nuclear

Largest reported plants in this portfolio
Largest reported plants	Capacity	State
Peach Bottom	2,876.4 MW	PA
Braidwood Generation Station	2,449.8 MW	IL
Byron Generating Station	2,449.8 MW	IL
LaSalle Generating Station	2,340 MW	IL
Limerick	2,277 MW	PA
Quad Cities Generating Station	2,018.6 MW	IL

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

May 1956
May 1956
Unit 1 construction startDresden 1
Construction of Dresden Unit 1 began on May 1, 1956.
Oct 15, 1959
Oct 15, 1959
Unit 1 first criticalityDresden 1
Dresden Unit 1 achieved first criticality on October 15, 1959.
1966
1966
Units 2 and 3 constructionDresden 2 &...
Construction of Dresden Units 2 and 3 began in 1966.
View 4 more milestonesHide 4 milestones
1. Jun 9, 1970
  Jun 9, 1970
  Commercial OperationSource
  Dresden Generating Station entered commercial operation.
2. Jul 1970
  Jul 1970
Nov 1971
Nov 1971
Unit 3 commercial operationDresden Cle...
Dresden Unit 3 began commercial operation in November 1971.
Oct 28, 2004
Oct 28, 2004
Initial License RenewalSource
The NRC approved Dresden's initial operating-license renewal on October 28, 2004.
Dec 16, 2025
Dec 16, 2025
Subsequent renewed licenses issuedSource
The NRC issued subsequent renewed facility operating licenses for Units 2 and 3, authorizing Unit 2 to operate through December 22, 2049 and Unit 3 through January 12, 2051.

Sources

PublisherReferenceType

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

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

constellationenergy.comDresden Clean Energy Center | Constellation Energy Locationsother

Common questions about Dresden Generating Station

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

How big is Dresden Generating Station?

Dresden Generating Station reports 2,018.6 MW nuclear of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.

What kind of plant is Dresden Generating Station?

Dresden Generating Station is a nuclear facility in Grundy County, IL, participating in the PJM market.

Where is Dresden Generating Station located?

Dresden Generating Station is in Grundy County, IL, inside the PJM balancing area.

Who operates Dresden Generating Station?

Dresden Generating Station is operated by Constellation Nuclear according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Dresden Generating Station generate?

Dresden Generating Station reported 15,132.7 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.

How does Dresden Generating Station compare to other plants?

By capacity, Dresden Generating Station ranks #22 of 54 operating plants of the same technology nationally. It ranks #4 of 6 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.

GE-Hitachi Solar - Morris, ILSolar PhotovoltaicSolar Photovoltaic1 MW984 m CPV Three Rivers Energy CenterNatural Gas Fired Combined CycleNatural Gas Fired Combined Cycle1,300 MW2.4 km Morris Cogeneration LLCNatural Gas Fired Combined CycleNatural Gas Fired Combined Cycle219 MW5.9 km ExxonMobil Oil Joliet RefineryOther Gases

Overview

Overview

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Infrastructure record

Profile

Structured profile

Generation and physical site

Reported operating nameplate by technology

Related assets

Braidwood Generation Station

LaSalle Generating Station

Quad Cities Generating Station

Byron Generating Station

Donald C Cook

Beaver Valley

Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Market registration

Nearby substations

Commercial, land, and environmental record

Transactions and agreements

Land and environmental record