An information portal of the Federal government and the Länder

Neckarwestheim GKN I nuclear power plant


Neckarwestheim GKN I nuclear power plant in Neckerwestheim, Baden-Württemberg, currently in the phase of dismantling, is operated by EnBW Kernkraft GmbH. Commercial operation began on 1 December 1976. Authorisation for power operation in accordance with the German Atomic Energy Act (AtG) expired on 6 August 2011. EnBW Kernkraft GmbH had filed application for decommissioning and dismantling licence on 24 April 2013. The Ministry of the Environment, Climate Protection and the Energy Sector as the competent nuclear authority in Baden-Württemberg granted the licence according to section 7 (3) AtG on 3 February 2017.


General information

Federal stateBaden-Württemberg
Type (construction line)Pressurised water reactor operator
Current operatorEnBW Kernkraft GmbH
OwnerEnBW AG

Operational data

Application date2 April 1971
Start of construction1 February 1972
First criticality26 May 1976
First grid synchronisation3 June 1976
Start of commercial operation1 December 1976
Shutdown date16 March 2011
Expiry of authorisation for power operation in accordance with German Atomic Energy Act (AtG)6 August 2011
First decommissioning and dismantling licence3 February 2017

Technical data

Thermal reactor power2,497 MW
Gross electric capacity840 MW
Net electric capacity785 MW
Number of reactor coolant pumps3
All fuel removed from plantNo
Number of control elements45
Type of cooling systemDirect river cooling or cell cooling towers