Denmark’s Nuclear U-Turn: Energy Security Trumps 40-Year Ban

In a surprising change, Denmark has announced it will reconsider its long-standing ban on nuclear power after nearly 40 years. Danish Energy Minister Lars Aagaard revealed on May 14, 2025 that the government will study the feasibility of nuclear energy, with a report expected in 2026.

The decision marks a major alteration in Danish energy policy. Since 1985, nuclear power has been banned in the country. All three parties in the governing coalition now support relaxing atomic energy laws as Denmark seeks to strengthen its energy security.

Denmark’s reconsideration isn’t focused on traditional nuclear plants. Instead, the government is interested in newer technologies like small modular reactors (SMRs). These could potentially complement Denmark’s extensive wind and solar power infrastructure.

Denmark eyes small modular reactors as potential partners to its robust wind and solar infrastructure, moving beyond conventional nuclear solutions.

“Solar and wind remain the cheapest and fastest way to the green change,” Aagaard stated. However, Danish officials now recognize that a system based solely on these renewable sources has limitations. The country needs additional support systems when the sun isn’t shining and wind isn’t blowing.

Reducing dependence on Russia is partly driving this policy shift. Denmark wants more energy independence and security in a changing geopolitical environment.

The country’s lack of nuclear experience presents challenges. Officials admit Denmark has insufficient knowledge about implementing nuclear power. The upcoming study will examine whether new nuclear technologies can be safely added to Denmark’s energy mix. Denmark may face similar grid limitations that have complicated renewable energy expansion in the United States.

Denmark’s decision contrasts with its past opposition to nuclear energy. In 2005, Danes celebrated when neighboring Sweden shut down the Barseback 2 reactor near Copenhagen. Now, Sweden is actively building new nuclear capacity, reflecting a regional shift in attitudes. Opposition parties in Denmark have been vocal supporters of reviving nuclear power options.

Unlike many European countries, Denmark never operated commercial nuclear plants. Currently, the country generates over 80% of electricity from renewable sources, making this potential policy reversal particularly noteworthy.

The government’s analysis will determine if new nuclear technologies can provide reliable power without harming Danish society, potentially ending four decades of nuclear prohibition.