Denmark and Germany may finally reach an agreement on the Energy Island Bornholm project as early as Monday at the North Sea Summit in Hamburg. The decision would end more than a year of negotiations over cost-sharing for the massive offshore wind project that has been in limbo since 2020.
Anticipation Builds Before Hamburg Summit
Søren Møller Christensen, director of Baltic Energy Island, has his tickets booked for Monday’s North Sea Summit in Hamburg. He’s traveling on an invitation from the German energy ministry, but his focus isn’t on the North Sea. Instead, he hopes the Baltic Sea will make headlines.
The summit brings together top politicians and leaders from multiple countries to discuss cooperation on securing green electricity for Europe. However, Christensen and many others on Bornholm are hoping for something more specific: a clear signal that Denmark and Germany have reached an agreement on Energy Island Bornholm.
The project aims to connect offshore wind power produced in the Baltic Sea with Zealand and Germany through a large transformer station on Bornholm. As a result, this could mark a significant step forward for Denmark’s renewable energy ambitions.
Years of Negotiations and Uncertainty
Energy Island Bornholm has had a turbulent existence since a parliamentary majority unveiled it in a 2020 climate agreement. The project was designated as part of “a new era for the expansion of Danish offshore wind” and meant to demonstrate the path toward more international cooperation on energy infrastructure.
However, the project has stalled over disagreements between Denmark and Germany about cost allocation. While the countries have agreed on expenses for land facilities and cables, they remain locked in negotiations over the much larger cost of offshore wind development. Both parties are keeping the exact figures confidential, and talks have dragged on for over a year.
EU Support and Economic Criticism
Despite the delays, Energy Island Bornholm has received significant backing from the European Union with approximately 4.8 billion kroner in funding. The EU has also designated it as one of eight key projects for energy independence, energy security, and climate action.
On the other hand, the project continues to face criticism from Denmark’s Economic Council. The council has assessed that the economic viability is so weak that the project should be scrapped altogether.
German Signal Sparks Hope
Christensen’s optimism isn’t unfounded. At a major energy summit on Bornholm in December, a representative from the German energy ministry indicated that Germany hoped to present an agreement with Denmark on January 26 at the North Sea Summit.
The announcement at the Energy Island Summit on December 1 caused quite a stir among the more than 150 attendees. When German State Secretary Stefan Rouenhoff made the statement from the stage, EU Energy Commissioner Dan Jørgensen quickly responded that they could sign the agreement right then and there.
Interestingly, Christensen hasn’t received any indication that the signing won’t happen. In fact, he’s been invited to attend the Hamburg summit, which he views as a positive sign.
Local Communities Await Clarity
While Christensen has worked to secure maximum benefits for Bornholm through his role at Baltic Energy Island, Michael Ellermann from the Citizens’ Association Energy Island Bornholm has focused on minimizing disruption for local residents who will become neighbors to the land facilities.
The Sose Site
An area of 111 hectares near Sose on southern Bornholm has already been designated to house the transformer station. This facility will receive up to 3.2 gigawatts of alternating current that Energy Island Bornholm could produce and convert it to direct current for transmission to Zealand and Germany.
Ellermann, who lives across from the designated transformer station site, expresses frustration with the prolonged uncertainty. The area has been identified as a potential project site for over three years, and residents are eager for a final decision.
Regional Impact and Energy Security
Mayor Frederik Tolstrup backs the local residents and hopes for clarity soon. Beyond the immediate concerns of neighbors, the energy island could have major implications for Bornholm’s power supply security.
Currently, Bornholm receives its electricity through an undersea cable from Sweden. The energy island project could transform this situation, providing a more robust and sustainable power supply for the island. However, Tolstrup emphasizes the importance of ensuring that Bornholm’s power supply can be connected without the island having to pay hundreds of millions of kroner.
Capacity and Scope
Energy Island Bornholm would have the capacity to produce 3.2 gigawatts of electricity, equivalent to the consumption of approximately three million households. The project collects power from three offshore wind farms positioned between 15 and 45 kilometers from Bornholm’s southwestern coast.
The total facility on Bornholm would cover 111 hectares, roughly equivalent to 222 soccer fields. Meanwhile, the complete price tag for establishing Energy Island Bornholm remains unknown.
Financial Considerations
In September 2025, Energinet revised the business case for the Danish portion of the electrical infrastructure from 13.9 billion to 22.2 billion kroner. Germany will pay for its own cable connection and half of the transformer station on Bornholm.
The total investment in the energy island’s offshore wind farms depends on the 3.2 gigawatt offshore wind tender. Denmark and Germany must agree on a fair distribution of these costs. While the project isn’t directly comparable to other offshore wind tenders, Denmark has already committed up to 55.2 billion kroner in state support for three current offshore wind tenders.
Worst Case Scenario
Despite his optimism, Christensen has considered what the worst outcome from Hamburg might be. Surprisingly, he believes the worst result wouldn’t be an outright rejection of the project. Instead, continued political silence and ongoing uncertainty would be most damaging.
Given Germany’s previous statements and the invitation to attend the summit, Christensen doesn’t believe that silence is the likely outcome. The North Sea Summit begins in Hamburg on Monday at 10 a.m., and all eyes from Bornholm will be watching.
Sources and References
The Danish Dream: Germany and Denmark Near Breakthrough Energy Island Deal
The Danish Dream: Best Energy Providers in Denmark for Foreigners
DR: Spænding på Bornholm: Afgørelse om energiø kan være få dage væk
