Aflandshage is a developer-led offshore wind project sited in the southern Øresund (about 10 km from Amager’s southern tip) intended to serve the Greater Copenhagen region with several hundred megawatts of renewable capacity. Promoted by HOFOR (Greater Copenhagen Utility), the scheme was advanced...
Per Aarsleff A/S indicates that its foundation works for the 26 gravity-based foundations at the Aflandshage Offshore Wind Farm are scheduled to be completed in the autumn of 2025, after offshore installation taking place in the first half of that year.
Foundation installation for the Aflandshage Offshore Wind Farm is scheduled to take place in the first half of 2025, marking the start of offshore construction as Per Aarsleff A/S installs 26 gravity‑based foundations on the seabed at the Øresund Strait site, with all work to be completed by autumn 2025.
Per Aarsleff A/S states that installation of the 26 gravity-based foundations for HOFOR’s Aflandshage Offshore Wind Farm in the Øresund Strait is planned to take place in the first half of 2025, following design, planning, and concrete prefabrication starting in 2024.
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Aflandshage Vindmøllepark, Aflandshage Offshore Wind Farm, Aflandshage havvindmøllepark
Per Aarsleff A/S plans to begin offshore site preparation for the Aflandshage Offshore Wind Farm in mid‑2024, carrying out dredging and establishment of stone beds at the project site in the Øresund Strait ahead of foundation installation for the 26 gravity‑based turbine foundations.
In the Environmental Impact Assessment material for Aflandshage Offshore Wind Farm, HOFOR includes an indicative schedule showing that offshore construction activities, including foundations, export cables and inter-array cables, are planned to commence within the 2023 offshore construction window. These works relate to establishing the offshore infrastructure and export connection from the Aflandshage wind farm area in Øresund to Energinet’s existing 132 kV substation at Avedøreværket, via a dedicated cable corridor and grid connection cables.
On 6 November 2023, HOFOR announced that investment in the 300 MW Aflandshage offshore wind farm was being put on hold after the Danish Energy Board of Appeal revoked the project’s establishment permit, stating that the project will be abandoned completely unless it can be continued in another form, and indicating a substantial write-down of prior development costs.
In 2023, as reported in an October 2023 blog, Robertson Geo completed wireline geophysical logging of five 35-metre boreholes from the jack-up vessel Sound Prospector over a two-week period at the Aflandshage offshore wind farm site, providing geotechnical data on the predominantly chalk and limestone geology for foundation design.
On 6 July 2023, the Danish Energy Board of Appeal revoked the establishment permit previously granted by the Danish Energy Agency for HOFOR’s Aflandshage offshore wind farm, citing, among other reasons, a changed regulatory practice regarding bat population counting in the project’s environmental assessment.
Per Aarsleff A/S was awarded a contract by HOFOR (Greater Copenhagen Utility) to design, produce, and install 26 gravity-based concrete foundations for the Aflandshage offshore wind farm in the Øresund Strait, including prefabrication at Aarsleff’s Polish factory, transport on barges, and offshore installation scheduled for completion by autumn 2025.
Siemens Gamesa and the Port of Køge agreed that Køge Harbor will serve as the installation base for the Aflandshage Offshore Wind Farm, with quay and hinterland areas to be reinforced and expanded to handle pre-assembly and unloading of turbine components that Cadeler will transport and install offshore for HOFOR.
HOFOR selected Siemens Gamesa Renewable Energy as turbine supplier for the Aflandshage offshore wind farm, signing a contract for 26 offshore wind turbines of 11 MW each (total around 286–300 MW), with Siemens Gamesa also responsible for producing, delivering and installing the machines and providing long-term operations and maintenance services.
In April 2023, Siemens Gamesa selected Danish company Cadeler under a project-specific contract to transport and install the 26 Siemens Gamesa 11 MW turbines for HOFOR’s Aflandshage offshore wind farm off Copenhagen.
The 2021 EIA documentation for Aflandshage Offshore Wind Farm presents an indicative offshore construction schedule that includes a specific activity line for "Trenching and installation of export cables" within the 2023–2026 construction period. This indicates that installation of the offshore export cables in the designated cable corridor, forming the grid connection between the wind farm and Energinet’s 132 kV Avedøreværket substation, is planned to start during 2023 as part of the overall offshore works.
In November 2022, the Danish Energy Agency granted HOFOR an establishment permit for the Aflandshage offshore wind farm under Denmark’s open‑door scheme, providing the project‑level development consent required to begin construction of the up to 286–300 MW offshore wind farm in the Øresund Strait.
Following approval of the environmental impact report, the Danish Energy Agency stated that, if HOFOR applied for an establishment permit for Aflandshage, the application and the approved environmental impact report would be sent for an eight‑week public consultation expected to start in mid‑July 2022.
On 13 June 2022, the Danish Energy Agency approved the feasibility study report for the Aflandshage offshore wind farm, consisting of the environmental impact report, confirming that it met legal requirements and allowing HOFOR to proceed towards applying for an establishment permit.
The Danish Energy Agency opened an eight‑week public consultation on the environmental impact report for the Aflandshage offshore wind farm on 29 November 2021, running until 20 February 2022, to gather comments on the project’s assessed environmental impacts.
In June 2021, HOFOR and Ørsted executed a letter of intent under which Ørsted plans to purchase electricity from the planned Aflandshage offshore wind farm to supply its 1.3 GW Green Fuels for Denmark Power-to-X project in the Greater Copenhagen area, covering power demand for the project’s initial 10 MW phase and part of its 250 MW second phase.
By the end of 2020, NIRAS, on behalf of HOFOR, completed and submitted the Environmental Impact Assessment reporting for the Aflandshage offshore wind farm (and the Nordre Flint project) to the Danish authorities as part of the permitting process.
By the end of 2020, NIRAS finalised the environmental impact assessment reporting for the Aflandshage offshore wind farm, including a dedicated risk assessment of the wind farm’s impact on aviation safety, regularity and capacity at Copenhagen Airport, thereby consolidating key environmental and technical constraints for the project.
By September 2020, NIRAS had completed a series of environmental field surveys for Aflandshage, including eight aerial bird and marine mammal counts between October 2019 and September 2020 that informed the project’s environmental impact assessment.
From October 2019, NIRAS and its partners began intensive field surveys for the Aflandshage offshore wind farm’s environmental impact assessment, including eight aerial bird and marine mammal counts over the wind farm area and surroundings in the Øresund Strait.
On 10 October 2019, a transboundary notification document titled "Transboundary impacts due to Aflandshage Offshore Wind Farm" was issued under the Espoo Convention, outlining potential cross‑border environmental effects of the Aflandshage wind farm and its export cables and presenting maps of the turbine areas and the export cable corridor to land, thereby initiating international consultation with neighbouring states.
On 6 March 2019, HOFOR received a licence for pre‑investigations for the Aflandshage and Nordre Flint offshore wind farms, covering surveys and studies within both the turbine areas and the associated offshore cable corridors that will bring power ashore to Avedøre Power Station, thereby authorising early site investigations needed for the planned export cable connection to Avedøreværket.
The Danish Energy Agency granted HOFOR A/S a preliminary investigations permit for the Aflandshage offshore wind farm, authorising geophysical, geotechnical and environmental surveys in the designated Øresund area, with the permit valid from 6 March 2019 to 31 December 2020.
In November 2017, HOFOR updated its preliminary investigation application for Aflandshage Vindmøllepark, narrowing the project area to the north to protect air traffic around Copenhagen Airport and extending it to the south, thereby adjusting the site boundaries in response to aviation safety constraints.
On 4 October 2016, HOFOR A/S applied again for permission to carry out preliminary investigations for a wind farm in a defined area south of Aflandshage in Øresund, confirming the specific site area for the planned Aflandshage Vindmøllepark within a 65 km² investigation zone.
On 4 October 2016, HOFOR A/S filed an updated application with the Danish Energy Agency for a preliminary investigations permit for the Aflandshage offshore wind farm area south of Aflandshage in Øresund, superseding its earlier 2011 application.
On 14 September 2011, HOFOR A/S submitted its first application for a preliminary investigation permit to the Danish Energy Agency for establishing offshore wind turbines in an area south of Aflandshage in the Øresund Strait, marking the initial definition of the Aflandshage offshore wind project zone.
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