IJmuiden Ver Beta-1 (Zeevonk)

Following an August 2025 amendment to the IJmuiden Ver Site Beta permit and publication of an authorisation agreement detailing the two construction phases and revised system-integration and payment obligations, the Zeevonk permit for IJmuiden Ver Beta became irrevocable on 17 October 2025, making the development rights for the phased 2 GW Zeevonk offshore wind project legally secure.

TenneT reported that fabrication of the jacket foundation for the IJmuiden Ver Beta offshore platform has started at Heerema Fabrication Group’s shipyard in Vlissingen. A first steel-cutting ceremony at the yard officially marked the beginning of construction of the more than 10,000‑tonne jacket, which will form the robust foundation of the IJmuiden Ver Beta offshore HVDC substation. The structure, approximately 90 metres long and 43 metres wide, is one of three jackets Heerema will build under TenneT’s 2GW programme on behalf of the Seatrium and GE Vernova consortium. This milestone represents the start of physical manufacturing for the offshore platform’s foundation and is highlighted by TenneT as an important step in delivering its new 2GW standard for connecting offshore wind farms in the Dutch and German North Sea.

On 6 August 2025, the Dutch government amended the site permit for IJmuiden Ver Beta (Zeevonk) to address the delay of the Delta Rhine Corridor hydrogen pipeline, formally allowing phased construction of 1 GW in 2029 and 1 GW in 2032. The revised consent reduces mandatory system integration capacity to 500 MW with commissioning in 2033, converts the 50 MWp offshore solar obligation into a 6 MWp pilot by 2028 with optional scale-up to 50 MWp, and halves Zeevonk’s total permit payment from €800 million to €400 million with a reprofiled payment schedule; the amended permit and an associated authorisation agreement on enforcement of the two construction phases were published in the Government Gazette later that month and became irrevocable in October 2025.

On 6 August 2025, the Dutch government amended the permit for the IJmuiden Ver Beta (Zeevonk) offshore wind farm, reducing Zeevonk’s total permit payment obligation from €800 million to €400 million and restructuring the payment schedule so that €20 million is paid annually in the first two years, with no payments for several subsequent years and higher instalments after the wind farm is operational. The revised consent, driven by the delay of the Delta Rhine Corridor hydrogen pipeline, also allows phased project delivery and relaxes system integration and offshore solar requirements, following an independent KPMG review that found the changes did not overcompensate the developer.

By March 2025, Fugro completed the offshore geophysical survey programme for Vattenfall at the IJmuiden Ver Beta (Zeevonk) wind farm site. The campaign ran from January through March 2025 onboard M/V Kommandor Iona, covering analogue geophysical and UXO survey works (dual Eiva Scanfish III arrays). CP Geo-Services provided offshore client representative supervision and QC/QA throughout. Completion of the campaign delivered the geophysical evidence base for layout refinement and constraints mapping at the 2 GW Zeevonk site and supported subsequent UXO consultancy (NjordIC) and geotechnical work feeding into foundation design and cable-route engineering ahead of Phase 1 construction.

Onshore construction had started by Feb 2025: local news reporting TenneT works at Maasvlakte states that construction of the new 380 kV high-voltage substation at Amaliahaven (Maasvlakte) had 'recently started' (part of the onshore infrastructure for connecting IJmuiden Ver Beta/Gamma and Nederwiek 2).

On 20 February 2025, Zeevonk (the Vattenfall–Copenhagen Infrastructure Partners joint venture for IJmuiden Ver Beta) confirmed that Wood had been appointed to perform Front-End Engineering Design (FEED) for the project's hydrogen facility at Rotterdam/Maasvlakte. The FEED programme is set to run for approximately ten months and will deliver engineering deliverables together with detailed cost estimates to support Zeevonk's investment and procurement decision-making. The FEED outputs will lay the groundwork for Zeevonk's follow-on EPC tender for the hydrogen plant, which the JV indicated was expected to launch in Q2 2025. The hydrogen facility is a key system-integration element of the Zeevonk concept, designed to convert electricity from the IJmuiden Ver Beta offshore wind farm (and co-located floating offshore solar) into green hydrogen for delivery to industrial offtakers in the Rotterdam port cluster.

Start of onshore cable works at Maasvlakte: TenneT works required closure of the Noordzeeboulevard from Monday 17 February 2025 (until end-2025) for installing electricity cables to connect IJmuiden Ver Beta (along with IJmuiden Ver Gamma and Nederwiek 2) to the grid at Maasvlakte.

In January 2025, Fugro began an offshore geophysical survey programme for Vattenfall at the IJmuiden Ver Beta (Zeevonk) wind farm site in the Dutch North Sea. The campaign mobilised the survey vessel M/V Kommandor Iona and acquired analogue geophysical datasets supported by dual Eiva Scanfish III arrays. The programme also incorporated UXO survey works as part of the analogue scope to identify and manage potential unexploded ordnance hazards within the site and along relevant corridors. CP Geo-Services Ltd provided offshore client representative support, supervising operations and performing QC/QA on behalf of Vattenfall. The survey supported development-stage decision-making by providing the geophysical evidence base needed for layout refinement, constraints mapping and risk reduction ahead of foundation and cable installation activities under the phased Zeevonk delivery plan.

On 18 December 2024, Google signed a 15-year corporate power purchase agreement with Copenhagen Infrastructure Partners (CIP) for 250 MW of generation capacity from the Zeevonk / IJmuiden Ver Beta offshore wind project in the Netherlands. The PPA covers electricity generated at the 2 GW offshore wind farm (with associated 50 MWp floating solar) located 62 km off the west coast of the Netherlands and is intended to power Google's Dutch operations. The PPA is the first major corporate offtake announced for the Zeevonk project, supporting the system-integration concept being developed by the Vattenfall–CIP joint venture (which also includes electrolyser-based hydrogen production at the Port of Rotterdam) and providing long-term revenue visibility ahead of commercial operations expected from 2029 onwards under the phased delivery plan.

On 11 June 2024, the Dutch Minister for Climate and Energy granted the permit for IJmuiden Ver Wind Farm Site Beta to Zeevonk II, a joint venture of Vattenfall and Copenhagen Infrastructure Partners. The site permit authorises development of a 2 GW offshore wind farm including a 50 MWp floating offshore solar component and a large-scale electrolyser at the Port of Rotterdam to convert part of the wind farm’s output into green hydrogen.

By 11 June 2024, Vattenfall and Copenhagen Infrastructure Partners (CIP), through its Energy Transition Fund I, had formally established Zeevonk as a joint venture to develop the IJmuiden Ver Beta offshore wind project in the Netherlands. The Vattenfall press release describes Zeevonk as a joint venture in which the two companies "have joined forces" for the purpose of developing, constructing and operating the 2 GW IJmuiden Ver Beta offshore wind farm and an associated large-scale electrolyser. The project will also include a 50 MWp floating offshore solar farm and a new electrolyser at the Port of Rotterdam to convert electricity from IJmuiden Ver into green hydrogen. CIP will work with Copenhagen Offshore Partners as its exclusive offshore wind development partner within this joint venture structure.

On 11 June 2024, Zeevonk (the Vattenfall + Copenhagen Infrastructure Partners joint venture) was awarded the right to develop the IJmuiden Ver Beta wind farm site by the Dutch Minister for Climate and Energy. Under the Dutch Wet windenergie op zee, the kavel permit combines the site lease (right to occupy and develop the seabed plot) with the development consent in a single ministerial decision — the Site Decision (Kavelbesluit) being the prior step and the permit award being the operative grant. The permit covers a 2 GW offshore wind farm, an associated 50 MWp floating offshore solar farm on site, and a large-scale electrolyser at the Maasvlakte at the Port of Rotterdam, to produce green hydrogen for industrial offtakers in the Rotterdam port cluster. The permit was later amended on 6 August 2025 to allow phased construction (1 GW by 30 November 2029 and the remaining 1 GW by 30 November 2032).

On 11 June 2024, Zeevonk II, a joint venture between Vattenfall and Copenhagen Infrastructure Partners, was awarded the permit for the 2 GW IJmuiden Ver Beta offshore wind farm and committed to a financial offer of €20 million per year over the 40‑year permit term, equivalent to a total of €800 million, plus approximately €20 million to cover environmental impact assessments and site studies. These permit-related payments are a key part of the project’s economic terms under the Dutch zero‑subsidy tender regime.

Between 29 February and 28 March 2024, Zeevonk II C.V., a joint venture of Vattenfall and Copenhagen Infrastructure Partners, submitted its permit application in the Dutch tender for IJmuiden Ver Wind Farm Site Beta. The application sought the site permit to build, operate and decommission the 2 GW IJmuiden Ver Beta offshore wind farm under the procedure run by the Netherlands Enterprise Agency (RVO).

Vattenfall announced that it would participate in the Dutch IJmuiden Ver offshore wind tender with the ‘Zeevonk’ bids for both the Alpha and Beta sites, confirming its intention—together with a partner for Beta—to compete for development of the IJmuiden Ver Beta project with a system-integration focused concept.

In 2023, TenneT selected a consortium of GE Vernova and Seatrium to supply the offshore HVDC converter platforms for its 2 GW Maasvlakte cluster, including the IJmuiden Ver Beta platform that will collect 66 kV AC power from the Zeevonk wind farm and convert it to 525 kV DC for transmission via a 155 km cable link to the onshore converter station at Amaliahaven (Maasvlakte).

The Netherlands Enterprise Agency published the Project and Site Description for IJmuiden Ver Alpha and Beta, including the Summary Environmental Impact Assessment for Site Beta, mapping environmental impacts and key constraints for construction, operation and removal of turbines and the grid connection for the IJmuiden Ver Beta wind farm.

On 6 December 2023, the Dutch Minister for Climate and Energy signed Kavelbesluit kavel Beta windenergiegebied IJmuiden Ver under the Offshore Wind Energy Act (Wet windenergie op zee), formally designating kavel Beta in the IJmuiden Ver wind energy zone (approximately 60 km off the Dutch North Sea coast) as the seabed location for an offshore wind farm with a planned installed capacity of approximately 2 GW. The decision was published in the Staatscourant on 28 December 2023 as Stcrt. 2023, 35270. The Kavelbesluit is the Dutch legal instrument under the Wet windenergie op zee (effective 1 July 2015) that formally designates a specific seabed plot for offshore wind use, establishing the basis for the subsequent tender. The Beta tender was awarded in April 2024 to the Zeevonk consortium (Vattenfall, Copenhagen Infrastructure Partners) under a qualitative criteria scheme combining offshore wind with electrolyser-based green hydrogen production. A Wijzigingsbesluit signed 6 August 2025 (Stcrt. 2025, 28710) subsequently amended the kavelbesluit to allow a two-phase build.

Transmission system operator TenneT selected NKT to design, manufacture and install the 525 kV HVDC cable systems that will connect the IJmuiden Ver Beta offshore wind farm, along with IJmuiden Ver Gamma and Nederwiek 2, to the Dutch onshore grid at Maasvlakte as part of its new 2 GW standard grid connections planned for operation between 2028 and 2030.

In spring 2022, the Dutch government issued the definitive permits and decisions for the Net op zee IJmuiden Ver Beta 2 GW grid connection, covering the offshore platform, subsea cable corridor, onshore converter station and associated 380 kV connection at Amaliahaven. These decisions became irrevocable in 2022–2023 after no appeals were lodged, confirming planning consent for the grid infrastructure that will evacuate power from IJmuiden Ver Beta (Zeevonk).

In autumn 2021, draft permits and decisions for the Net op zee IJmuiden Ver Beta grid connection were placed on public display for consultation. Stakeholders were invited to review and comment on the proposed offshore platform, cable route, and onshore facilities that will connect the IJmuiden Ver Beta wind farm to the Dutch high-voltage grid.

In August 2019, the Dutch authorities opened public consultation on the draft scoping note (concept Notitie Reikwijdte en Detailniveau, NRD) for the Net op zee IJmuiden Ver Beta grid connection, which will transport electricity from the IJmuiden Ver Beta wind farm to shore. The consultation formed part of the early procedure phase for permitting the offshore platform, subsea cable route, and onshore connection, coordinated via Bureau Energieprojecten.

The IJmuiden Ver wind farm zone, located about 62 kilometres off the Dutch coast with water depths between roughly 17 and 47 metres, was designated as a wind energy area in the National Water Plan environmental assessment by Royal Haskoning, establishing the broader zone that later included the IJmuiden Ver Beta site.