On publication of the updated Development Framework for Offshore Wind Energy (version December 2024, published 27 January 2025), the Dutch government formally defined key design requirements for TenneT’s Ten noorden van de Waddeneilanden offshore grid connection. The Framework confirms that this wind farm zone will use a 700 MW alternating‑current offshore platform despite the long export cable distance, requires the platform to be equipped with a helicopter deck as an explicit exception to the standard ship‑only access policy, and stipulates that TenneT must enlarge the standard platform design to accommodate reactive power compensation equipment and two additional customer connection fields for nearby gas infrastructure. These provisions fix important functional and spatial parameters for the Net op zee Ten noorden van de Waddeneilanden platform ahead of detailed engineering and procurement.
The results of the archaeological desk study for the Ten noorden van de Waddeneilanden wind farm zone were scheduled to be presented and discussed in a webinar on 8 February 2022, following archaeological assessment of geophysical survey data by Periplus Archeomare that identified 35 magnetic anomalies of 50 nT or more where, under Dutch cultural heritage law, no seabed disturbance such as cable trenching or vessel anchoring may occur within 100 metres.
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Net op zee Ten noorden van de Waddeneilanden (NOZ TNW) is a planned offshore grid connection intended to transport up to 700 MW of power from the Ten noorden van de Waddeneilanden Wind Farm Zone to the Dutch onshore high-voltage grid. Government and RVO documentation describe a standard 700 MW HV...
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Net op zee Ten noorden van de Waddeneilanden, NOZ TNW, Ten Noorden van de Waddeneilanden grid connection
Results of the geophysical survey of the Ten noorden van de Waddeneilanden wind farm zone, acquired by MMT AB Sweden with ultra‑high‑resolution seismic and related methods, were scheduled to be presented and discussed in a webinar on 3 February 2022, providing detailed subsurface and obstruction information for the site.
The Netherlands Enterprise Agency (RVO) made available the final dataset and campaign report for the 24‑month metocean measurement campaign at Ten noorden van de Waddeneilanden, summarising all processed wind, wave and current data from June 2019 to June 2021 together with a comprehensive validation report.
By 16 July 2021, a composite downhole geotechnical log for Ten noorden van de Waddeneilanden (file "TNW‑VO line2.GLO") had been generated, providing processed and interpreted results from the offshore geotechnical survey for use in the site ground model.
Offshore geotechnical investigations for Ten noorden van de Waddeneilanden commenced on 22 May 2020, with rotary borehole drilling and testing at location TNW034 (including BH and CPT points) down to 60.2 m below the seafloor in approximately 38 m water depth as logged in the project geotechnical records.
A 24‑month metocean measurement campaign for the Ten noorden van de Waddeneilanden wind farm zone began in June 2019, using LiDAR buoys at stations TNWA and TNWB to collect continuous wind, wave and current data as part of the site characterisation programme.
As part of the Dutch Offshore Wind Development Framework, the connection site and cable route for the Ten noorden van de Waddeneilanden offshore grid connection were selected by the Minister following the VANOZ and VAWOZ 2030 exploration processes. The preferred alternative was chosen after studies of technology, cost, environmental impact and future‑proofing, resulting in a geographically distributed pattern of landing points on the onshore high‑voltage grid, including the route for Ten noorden van de Waddeneilanden.
As part of the Dutch Exploration of Offshore Grid Landing processes VANOZ and VAWOZ 2030, the connection sites and cable routes for several offshore wind farm zones, including Ten noorden van de Waddeneilanden, were selected following broad surveys and impact studies on technology, costs, environment, and future-proofing, establishing the preferred grid landing pattern for the project.
REASeuro performed a desk‑based unexploded ordnance (UXO) study and risk assessment for the Ten noorden van de Waddeneilanden wind farm zone, analysing historical World War II bombing and naval activity to evaluate the presence and burial of munitions as part of the site’s obstructions and UXO risk assessment work.
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