Danish Energy Agency invites views on Hesselø seabed issue

The Danish Energy Agency (DEA) and Energinet have invited potential developers to dive into the seabed data and contribute with their assessment of whether the Hesselø offshore wind farm is still attractive.

Before the summer, the tender for
Hesselø was put on hold when Energinet's preliminary investigations revealed soft clay formations 20-30 m below the seabed at the site for Hesselø, located 30 km north of Zealand in the Kattegat. The results appear to indicate less favourable site conditions which may cause technical challenges in relation to installation.

The DEA has just published
the report and associated data from the preliminary geophysical investigations. This will be followed by a draft report and data from the preliminary geotechnical investigations, expected to be published at the end of October.

The processing of data from the preliminary investigations has now reached a point where the DEA and Energinet can invite potential developers to a technical dialogue to discuss whether the seabed conditions challenges the establishment of Hesselø within the politically agreed framework e.g. in relation to subsidy scheme, the target capacity of 800-1,200 MW, the planned time of completion, etc.

The technical dialogue will be virtual and take place from late October to late November 2021.

Based on the input provided by the potential developers as well as further analyses, the DEA will assess whether the tender for
Hesselø can continue under the current framework.

If new political decisions are required in order to move ahead with the wind farm site, the parties behind the 2020 Climate Agreement for energy and industry must re-assess whether
Hesselø is still the preferred solution or whether the second offshore wind farm mentioned in the 2018 Energy Agreement should instead be established at an alternative site.

For more information on offshore wind farms worldwide, click here.