Donald C Cook — 2,285 MW nuclear plant, Berrien County, MI

Donald C Cook — 2,285 MW nuclear plant, Berrien County, MI · Ask the Grid

Generation and physical site

EIA plant 6000 · Inventory for Aug 2026.

Reported operating nameplate by technology

Nuclear: 2,285.3 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 Donald C Cook
Generator	Technology	Status	Power (MW)	Energy (MWh)
1	Nuclear	Operating	1,152	Unknown
2	Nuclear	Operating	1,133.3	Unknown

Physical map location · OpenStreetMap: 41.97572, -86.56546
Filed location · EIA: 41.97560, -86.56521

Sources and observation dates

Inventory source: EIA-860M workbook (preliminary)
EIA reporting month: Aug 2026
EIA retrieved: Oct 10, 2026
OSM extract: Oct 9, 2026
OSM last mapped edit: Mar 8, 2023
Map prepared: Oct 10, 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

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

Generator	Capacity	Technology	Operation	Status
1	1,152 MW 1,009 MW summer	Nuclear Nuclear · ST	Aug 1975	Operating
2	1,133.3 MW 1,168 MW summer	Nuclear Nuclear · ST	Jul 1978	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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AssetOrganizationContractor

Parties and identifiers

OrganizationRoleBasis

Central and South West CorporationParent companyIntermediate parent company (2002 restructuring)

General Electric CompanyEquipment supplierTurbine-generator supplier Brown Boveri CorporationEquipment supplierTurbine-generator supplier

Reporting portfolio

EIA reporting entity

Indiana Michigan Power Co

Entity 9324

Operating portfolio

13 plants

2 states

Reported capacity

4,942.6 MW

Conventional Hydroelectric · Conventional Steam Coal · Nuclear

Largest reported plants in this portfolio
Largest reported plants	Capacity	State
Rockport	2,600 MW	IN
Donald C CookCurrent	2,285.3 MW	MI
St. Joseph Solar	20 MW	IN
Berrien Springs	7.2 MW	MI
OlivePV	5 MW	IN
Twin Branch	4.8 MW	IN

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Oct 25, 1974
Oct 25, 1974
Unit 1 original operating license issuedfederalregi...
NRC issued original operating license DPR-58 for Unit 1.
Aug 1975
Aug 1975
Generator enters operationEIA-860
EIA-860 lists generator 1 with this operating date.
Dec 23, 1977
Dec 23, 1977
Unit 2 original operating license issuedfederalregi...
NRC issued original operating license DPR-71 for Unit 2.
View 2 more milestonesHide 2 milestones
1. Jul 1978
  Jul 1978
  Generator enters operationEIA-860
  EIA-860 lists generator 2 with this operating date.
2. Aug 8, 2002
  Aug 8, 2002
Aug 30, 2005
Aug 30, 2005
License renewal issued for 20-year extensionfederalregi...
NRC issued renewed 20-year operating licenses DPR-58 and DPR-74 for Units 1 and 2, respectively, extending operation to October 25, 2034 and December 23, 2037.
Mar 25, 2013
Mar 25, 2013
Unit 2 turbine retrofit contract awardedalstom.com
Alstom was awarded a contract to provide steam turbine retrofit services for Unit 2 comprising manufacture, supply, and installation of one high-pressure turbine module and three low-pressure inner blocks, expected to add 60 MW to Unit 2 capacity.
Oct 2016
Oct 2016
Unit 2 turbine retrofit operationalalstom.com
Alstom Unit 2 turbine retrofit equipment (one HP module and three LP inner blocks) scheduled to be operational in fall 2016 following a 35-day outage. Expected to add 60 MW to Unit 2 capacity.

Sources

PublisherReferenceType

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

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

alstom.comalstom.compublic_source

Common questions about Donald C Cook

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

How big is Donald C Cook?

Donald C Cook reports 2,285.3 MW nuclear of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.

What kind of plant is Donald C Cook?

Donald C Cook is a nuclear facility in Berrien County, MI, participating in the PJM market.

Where is Donald C Cook located?

Donald C Cook is in Berrien County, MI, inside the PJM balancing area.

Who operates Donald C Cook?

Donald C Cook is operated by Indiana Michigan Power Co according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Donald C Cook generate?

Donald C Cook reported 18,512 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.

How does Donald C Cook compare to other plants?

By capacity, Donald C Cook ranks #18 of 54 operating plants of the same technology nationally. It ranks #1 of 2 in MI.

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.

Berrien SpringsConventional HydroelectricConventional Hydroelectric7 MW20 km Buchanan (MI)Conventional HydroelectricConventional Hydroelectric4 MW23 km

Overview

Infrastructure record

Overview

Infrastructure record

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Structured profile

Generation and physical site

Reported operating nameplate by technology

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Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Market registration

Nearby substations

Commercial, land, and environmental record

Transactions and agreements