Stade was the first power plant in Germany to be decommissioned after the country announced a nuclear phase-out policy in 2003. The 640 MWe pressurised water reactor began operating in 1972. The plant operated at a reduced capacity from 2003 until the end of 2005, prior to its shutdown. Dismantling of the power plant began in October 2005. Conventional demolition of individual buildings on the power plant site started in 2023.
The first phase of the building dismantling was completed in spring 2024. It involved the demolition of 17 buildings with a total volume of about 177,000 cubic metres – including the administration building, the workshop and operations building, the emergency diesel generator building, the switchgear building, and finally the engine house. This work laid the foundation for the dismantling of the remaining central building complex. Aspects such as safety, environmental protection, and sustainability through material recycling were given top priority.
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(Image: PreussenElektra)
The demolition of the reactor building is part of Phase II of the conventional dismantling process and simultaneously marks the beginning of the crucial final phase of the overall project.
On 31 March this year, the demolition of the reactor building began. To weaken the material, a steel ball weighing about four tonnes was first be used to strike the approximately 80-centimetre-thick concrete shell. Following this, the auxiliary buildings were completely demolished before the further demolition of the reactor building began at the beginning of June. This involved the use of, among other things, a 16-tonne hydraulic shear and a 180-tonne cable excavator. The plan is to completely dismantle the reactor building by the end of this year.
In preparation for the demolition, extensive hazardous material remediation of the auxiliary building began in May 2025. This was followed in December by the remediation of the reactor building and the containment vessel within it. For this, the necessary infrastructure was first established both inside and outside the reactor building. This included, in particular, the erection of a complex facade scaffold with stair towers and elevators. As the first externally visible measure immediately before the impending demolition of the reactor building, the external lifting platform, which previously also served for the removal of CASTOR used fuel storage casks and steam generators, was demolished on 6 March.
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(Image: PreussenElektra)
“With the start of demolition work on the reactor building, we have reached the final technical milestone we have been working towards for a long time,” plant manager Marco Albers said in March. “The entire team has put enormous care into preparing the necessary documentation, and I am very pleased that the review by the independent expert and the approval of the Lower Saxony Ministry for the Environment have now been granted. Now, with the help of our partner, the Freimuth company, we can implement what is probably the most demanding step in the conventional demolition of the Stade plant in a technically sound and safe manner.”
Phases II (involving five building complexes) and III (ten building complexes) have been running in parallel since 2023. The site is scheduled to be released from nuclear regulatory oversight in autumn 2027. This will make the Stade nuclear power plant the first commercially operated pressurised water reactor in Germany to be completely dismantled.
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(Image: Freimuth)
Germany’s nuclear phase-out
Following the accident at the Fukushima Daiichi plant in Japan in March 2011, the government of Chancellor Angela Merkel decided it would phase out its use of nuclear power by the end of 2022 at the latest. Prior to the accident, Germany was obtaining around one-quarter of its electricity from nuclear power.
In August 2011, the 13th amendment of the Nuclear Power Act came into effect, which underlined the political will to phase out nuclear power in Germany. As a result, eight units were closed down immediately: Biblis A and B, Brunsbüttel, Isar 1, Krümmel, Neckarwestheim 1, Phillipsburg 1 and Unterweser.
The Brokdorf, Grohnde and Gundremmingen C plants were permanently shut down at the end of December 2021. The country’s final three units – Emsland, Isar 2 and Neckarwestheim 2 – shut down in April 2023. All the units are now at various stages of decommissioning.
