Denmark's Energy Agency Presses Ahead With Vattenfall's 1.8 GW Offshore Wind Plan Amid Legal Challenge
Denmark will continue facilitating the project even as onshore wind producers contest the state subsidies keeping it viable.
Denmark will continue facilitating plans for 1.8 GW of offshore wind capacity by Swedish developer Vattenfall, despite a legal challenge by local onshore wind producers against the state subsidies offered to support the project, the country's energy agency told Montel on Tuesday (2026-09-08).6
The agency's stance keeps one of Denmark's larger offshore wind pipelines moving at a moment when the Danish-Swedish power relationship is under strain. Denmark's DK1 day-ahead price settled at €140.62/MWh on Monday (2026-09-07), against Sweden's SE3 zone at €63.89/MWh on the same session — a spread of roughly €77/MWh that reflects constrained cross-border capacity and a western Danish grid heavily exposed to wind intermittency.6,2
Vattenfall is simultaneously active on both sides of the Øresund. The Swedish developer inaugurated the 139 MW Bruzaholm onshore wind farm near Eksjö in Sweden in May 2026, a project expected to generate 460 GWh annually. The Danish offshore development would dwarf it: 1.8 GW is more than twelve times Bruzaholm's installed capacity.3
The legal challenge targets the subsidy structure Denmark offered to secure Vattenfall's commitment. The agency's decision to press ahead despite the dispute signals Copenhagen's intent to prioritise offshore build-out over the objections of competing domestic generators. If Danish courts move to suspend or invalidate the subsidy arrangement, the agency's confidence may face a harder test than its current statement implies.6
That prospect sits within an already deteriorating bilateral infrastructure picture. Sweden paused planning for a new 1 GW electricity interconnector with Denmark on Friday (2026-05-15) amid a dispute over proposed EU grid rules, Montel reported. A Danish energy industry lobby responded by accusing Sweden of going in the "wrong direction."2
The interconnector pause has direct consequences for where Vattenfall's offshore output goes. The SE3-to-DK1 price gap recorded on Monday (2026-09-07) illustrates the cost congestion already imposes on Danish consumers and industry. Additional offshore wind generation in Denmark, absent greater transmission capacity toward Sweden's cheaper power pool, would add supply to an already isolated western Danish zone rather than balancing freely across the region.2
A separate structural question surrounds the broader Danish offshore ambitions. A Danish energy island project linking Denmark and Germany has been flagged for high costs and rising security threats in the Baltic Sea, Montel reported. Vattenfall's 1.8 GW plan fits within the wider regional renewable build-out, but each megawatt added to Denmark's grid is only as useful as the transmission capacity available to move it.1
Germany's IHK chamber of commerce for Schleswig-Holstein has proposed that parts of northern Germany and western Denmark form a shared power bidding zone, citing the volume of offshore wind and potential industrial demand in the corridor, Montel reported in June 2026. Such a reconfiguration would directly affect how Vattenfall's Danish output is priced and traded, though no regulatory decision has been taken.5
Vattenfall is carrying substantial capital commitments across Scandinavia in parallel. In June 2024, the company announced plans to extend the operating lifetimes of all five Forsmark and Ringhals nuclear reactors in Sweden from 60 to 80 years, an investment estimated at SEK 40–50 billion to be deployed primarily in the 2030s. Forsmark, on the Baltic coast north of Stockholm, houses three boiling water reactors with a combined output of approximately 3,270 MW; Ringhals on Sweden's west coast operates two pressurised water reactors with combined capacity of about 2,190 MW.4
That nuclear extension programme runs alongside the offshore wind push and the completed Bruzaholm onshore farm. The capital demands across all three are substantial. The Danish offshore project's subsidy structure — the element now being litigated — was designed in part to give Vattenfall the revenue certainty to proceed with the build. Whether the courts sustain it intact will shape the project's financing as much as its permitting.6,4