Nuclear power

Nuclear power generation plays a key role in supporting the energy transition.

Nuclear power is a low-carbon source of electricity that plays a key role in the energy transition. It supports everyday electricity supply and the continued electrification of society with fossil free power. For decades to come long-term nuclear operations will continue to play an important role in Sweden as a climate-neutral, cost-effective source of baseload electricity.

Vattenfall is a major owner of nuclear power in Northern Europe with vast experience of nuclear operations, decommissioning and management of radioactive waste and spent nuclear fuel. Nuclear safety is the overriding priority in everything we do. Vattenfall owns seven reactors in commercial operation in Sweden at Ringhals and Forsmark. Vattenfall also owns German nuclear power plants that are about to be decommissioned due to political decisions.

In 2018, nuclear generation represented 42% of Sweden’s electricity production. Vattenfall's Ringhals and Forsmark nuclear reactors produced 55.2 TWh of Vattenfall's total electricity generation at 130.3 TWh.

Vattenfall owns ten nuclear reactors. Seven of these are located in Sweden (four at Ringhals, three at Forsmark), and three in Germany (Brunsbüttel, Krümmel and a minority stake in Brokdorf). The German government has taken the decision to phase out the use of nuclear power. Vattenfall's nuclear assets in Germany will be wound down in accordance with this decision.

Vattenfall has decided to close the Ringhals 1 and 2 reactors in 2020 and 2019, respectively. Over a period of ten years, Vattenfall has invested in extensive modernisation programs so that Ringhals 3 and 4 and Forsmark 1, 2 and 3 are well prepared to operate for decades ahead.

Sourcing nuclear

We aim to set and maintain high standards on our fuel sourcing. Nuclear fuel suppliers are screened and approved by Vattenfall before they deliver.

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Nuclear waste management

High-level, long-life radioactive waste, primarily consisting of spent nuclear fuel, must be carefully shielded during handling and transportation. It takes approximately 100,000 years for the radioactivity to decline to the level that occurs in the uranium ore from which the fuel was originally extracted. Waste generated during the operation of a nuclear power plant is classified as radioactive if it was contaminated or activated in the process.

Nuclear waste management in Sweden

Radioactive waste in Sweden is classified in four levels and depending on the radionuclide content in the waste it is also classified as long-lived or short-lived waste. The Swedish system of waste management was developed by SKB, Swedish Nuclear Fuel and Waste Management Company, which is a a company owned by the Swedish nuclear operators. The system consists of several final disposal facilities depending on the activity and lifetime of the waste. The Swedish national authorities supervise the process for the final storage of spent nuclear fuel.

The safety work at Vattenfall’s plants in Sweden is supervised by the Swedish Radiation Safety Authority.

Nuclear waste management in Germany

In 2016, the German Bundestag passed a law under which responsibility for the intermediate and final storage of nuclear waste was transferred to the state. In return, the nuclear operators made payments to a public fund.

So far, there is neither a final repository for low and medium-level radioactive waste nor for spent nuclear fuel. A final repository for low and medium-level radioactive waste is being built in a former iron ore mine (Schacht Konrad) and is expected to be available in 2027. Until then, the waste is stored in interim storages at the nuclear power plant sites. At our NPP Brunsbüttel a special storage facility is being built and shall be available in 2020. A permit to erect a similar storage facility at our NPP Krümmel has been applied for.

The site finding procedure for a final repository for spent nuclear fuel is ongoing. Until such storage is available, the spent nuclear fuel is stored in interim facilities that exist at all nuclear power plant sites. For the Brunsbüttel facility, permit proceedings are pending as the original permit has been found void by court.

The safety work at Vattenfall’s plants in Germany is supervised by the Social Ministry of Schleswig-Holstein.

Our power plants

Find out more about Vattenfall’s power plants and facts about how much electricity and heat we are producing.

Nuclear power and the environment

Nuclear power emits low levels of CO2 across the entire life cycle. The management of high-level waste such as spent nuclear fuel requires storage in secure facilities for an extremely long time. The facilities must meet the requirements for radiation protection for up to 100,000 years. It is the operator's responsibility to have reliable solutions for managing nuclear waste.

Uranium mining to manufacture nuclear fuel has an impact on nature. Modern mining methods allow for the landscape to be restored once mining operations have finished. The construction of new nuclear power plants requires the use of energy-intensive materials, such as metal and concrete, but once a nuclear power plant is up and running it emits exceptionally low amounts of CO2.

To get a comprehensive overview of the total emissions in relation to nuclear power, we have carried out an Environmental Product Declaration, EPD. EPDs are updated on a regular basis and they help us identify where we should focus our future efforts to keep reducing our emissions even further.

Nuclear decommissioning

Vattenfall has established the Business Unit Nuclear Decommissioning to perform a safe and efficient decommissioning of reactors in Germany and Sweden. The licensing of a Swedish final repository for spent nuclear fuel is progressing as planned. The next step is the government’s approval of the application made by the Swedish Nuclear Fuel and Waste Management Company (SKB). This application involves both the site for future storage in Forsmark as well as the so-called KBS-3 method that is setting an international benchmark for final storage of nuclear waste. The method is the result of more than 30 years of research & demonstration carried out by SKB.

Related content

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Waste can be used as fuel instead of being sent to landfill.

See also

Learn about our strategic and financial targets.

We have a responsibility for our environmental and social impacts.

We have decided to make the biggest leap yet to reduce the impact of climate change.