Vattenfall wins 1.8 GW Danish offshore wind projects, expanding development pipeline

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Vattenfall has secured rights to develop two offshore wind projects with at least 1.8 GW of combined capacity in Denmark’s latest tender, creating a substantial future pipeline for turbine suppliers, installation vessels and project logistics providers.

The company was awarded the Hesselø project in the Kattegat Sea and the North Sea I Mid project off Denmark’s west coast. Vattenfall will now work with partners and public authorities to advance both developments through the next stages.

Hesselø will have a minimum installed capacity of 800 MW. The site is located between Denmark and Sweden, approximately 30 kilometres from the coast.

North Sea I Mid will provide at least 1,000 MW of capacity. It lies roughly 20 kilometres offshore near Hvide Sande, a location that could place western Danish ports in contention for construction, installation and maintenance work.

Together, the projects represent a minimum capacity of 1.8 GW. Their development is expected to generate demand across the offshore wind supply chain, including component manufacturing, heavy transport, port handling, vessel chartering and subsea cable installation.

Grid capacity has been reserved for both projects. Their connection points will be located approximately 50 kilometres inland, requiring offshore and onshore electrical infrastructure to carry power from the wind farms into Denmark’s transmission network.

The project consents will run for 30 years, with an option for an additional 10 years.

Vattenfall already operates five offshore wind farms in Denmark with combined capacity of about 1.5 GW. According to the company, those assets produce approximately 6.5 TWh of electricity annually, equivalent to the consumption of around 1.5 million homes.

The latest awards will therefore more than double the capacity represented by Vattenfall’s existing Danish operating portfolio, although the company did not disclose construction schedules, turbine selections or investment figures.

“Winning both projects reflects our continued ambition to grow our offshore wind portfolio and support the electrification of industry and society,” said David Flood, head of Vattenfall’s Business Unit Offshore.

Flood said wind power, alongside other fossil free generation, could help Europe meet rising demand for locally produced electricity. He added that the company would maintain its focus on affordability and long term value while scaling its offshore activities.

The scale and locations of the developments will require coordinated marine and landside logistics. Offshore construction typically involves the movement of foundations, turbines, cables and substation equipment through ports capable of handling heavy and oversized cargo.

Hesselø’s position in the Kattegat and North Sea I Mid’s proximity to Hvide Sande create different transport and installation requirements. Port selection, vessel availability and the timing of component deliveries will become important as engineering and procurement plans take shape.

Vattenfall said environmental and social considerations would be incorporated from the beginning of development. The company will continue discussions with the relevant partners and authorities as it advances permitting and project design.

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