Each nuclear power plant has facilities for the conditioning and interim storage of the radioactive waste that is produced during operation. In addition, the ZWIBEZ interim storage facility is located on the site of the Beznau nuclear power plant.
The Paul Scherrer Institute (PSI) has facilities for the treatment of its own radioactive waste and for waste originating from the medical, industrial and research sectors. This waste is stored temporarily in the Federal interim storage facility on the PSI site.
The ZWILAG central interim storage facility operated by Zwischenlager Würenlingen AG, which also includes waste treatment plants, is located next to the PSI site. This facility comprises several interim storage buildings for all types of radioactive waste and for spent fuel assemblies, a conditioning plant and an incineration and smelting plant.