Isar interim storage facility

The Isar interim storage facility is integrated in the nuclear power plant site by an outer enclosure. The entire site is protected by a security perimeter fence. This means that CASTOR casks only need to be moved a short distance from the reactor building to the interim storage facility and that no public roads need to be used. A municipal boundary runs through the site and most of the nuclear power plant site belongs to the Municipality of Essenbach. The site of the Isar interim storage facility, however, belongs to the Municipality of Niederaichbach in the District of Landshut, Lower Bavaria Regional Administrative District. The City of Landshut is about 13 km to the south west.

The storage building has a capacity of 152 spaces. The storage building is approximately 92 metres long, 38 metres wide and 18 metres high and consists of two storage areas, one shipment area and an operating area. Storage area 1 covers an area of approximately 1,230 m², storage area 2 approximately 1,330 m².

Since April 2025, seven more CASTOR casks holding vitrified waste from reprocessing in Great Britain have been stored in the Isar interim storage facility.

Please find here further information on the return of radioactive waste from reprocessing.