Transition from Operation to Decommissioning for Ringhals 1 and 2 in Sweden. Appendix I

Ringhals is the largest nuclear power station in Sweden. There are four reactors on‑site, one boiling water reactor (BWR) and three pressurized water reactors (PWRs) with a total installed power of 3951 MW(e). The combined production capacity is approximately 30 TWh per year providing about 20% of total electricity demand in Sweden. The Ringhals AB company is the operator and licence holder for the site. The owners of Ringhals AB are Vattenfall (70.4 %) and Sydkraft Nuclear Power (29.6 %), part of the Uniper group. Ringhals AB currently has about 1300 employees. While Vattenfall is the majority owner of Ringhals, it has exclusive responsibility for decommissioning. In 2015, as majority owner, Vattenfall decided to close Ringhals Units 1 and 2 some five years ahead of schedule. Ringhals 2 closed at the end of 2019 and Ringhals 1 ceased operation towards the end of 2020. Ringhals 3 and 4 are planned to continue operation into the 2040s under current assumptions. Ringhals 1 is a BWR built by Asea‑Atom and has an installed electrical capacity of 881 MW(e). It began operating commercially in January 1976. Ringhals 2 is a PWR manufactured by Westinghouse with an installed electrical capacity of 865 MW(e) and began commercial operation in May 1975. Vattenfall has made a strategic decision to separate continued operation of Ringhals 3 and 4 from the decommissioning of Units 1 and 2. Accordingly, — Ringhals AB is the licensee and has responsibility for continued operation at the Ringhals site; — Decommissioning of Ringhals Units 1 and 2 is to be managed by Vattenfall's nuclear decommissioning division (Business Unit Nuclear Decommissioning (BUND)); — Vattenfall will be responsible for decommissioning Ringhals Units 1 and 2 when both units are 'fuel free' in 2022.