50Hertz Offshore GmbH

Project Insurance Policies for HV/DC Grid Connection System Ostwind 4. The tendered Insurance Coverage is subdivided in 2 lots, such as: • Lot 1: Combined Marine and Construction Allrisk Insurance for HV/DC Grid Connection System Ostwind 4 (Primary Policy) • Lot 2: Third Party Liability Cover including Environmental Liability Cover and Environmental Impairment Cover for HV/DC Grid Connection System Ostwind 4

50Hertz Offshore GmbH, Amprion Offshore GmbH und TenneT Offshore GmbH streben die gemeinschaftliche Vergabe zur Ausführung einer "2 GW HVDC Platform Design Study" an. Inhalt der Studie ist die Entwicklung eines optimierten, kosteneffizienten 2 GW HVDC Plattform-Designs auf Basis eines harmonisierten 2 GW Standarddesigns, das mit minimalen Anpassungen gleichermaßen von jedem der drei Auftraggeber genutzt werden kann.

The landfall for the planned Ostwind 4 (OW4) HVDC cable system is located in Vierow, at the Greifswalder Bodden, Mecklenburg-Western Pomerania, Germany. For the landings, 3 Horizontal Directional Drillings (HDD) with cable ducts are planned. This Scope is Lot 1. ---- The landfall for the planned Bornholm Energy Island (BEI) HVDC cable system is located in Vierow at the Greifswald Bodden (Mecklenburg-Western Pomerania, Germany). For the landings, 3 Hori-zontal Directional Drillings (HDD) with cable ducts are planned. This Scope is Lot 2. ---- The landfall for the planned BEI HVDC cable system, is located at Sose Odde on the Baltic Sea Island of Bornholm (Denmark). For the landings, 3 Horizontal Directional Drillings (HDD) with ca-ble ducts are planned. This Scope is Lot 3. ----- Lot 4 to 6 are Combination Lots of Lot 1 to Lot 3. ---- For all lots, the landfall structure will be used to accommodate power cables. The subject of the contract is the full scope required for the planning and execution of the complete landing structure. Delivery and installation of the power cables are not part of the contract per lot. As part of the engineering, detailed design, work method statements and related documents as well as the scope- and process-specific work and its conceptualization are to be implemented. Documentation of production, quality assurance and as-built planning are further components of the engineering. The execution work scope includes the setup of the construction site both on land and sea and the preparation of the construction site by means of access roads and construction roads. This also includes clearing the construction site. Environmental avoidance, mitigation and protection measures must be carried out in accordance with permit requirements. The delivery and pre-assembly of ducts, the production of auxiliary structures and temporary construction aids on land and water, as well as the drilling of boreholes for the installation of cable ducts (constituting the actual landfall structure) are also part of the execution work scope. The installation and confirmation of conformity of the cable ducts are also part of this scope. The execution work scope is completed by dismantling the construction site facilities, access roads and construction roads, clearance of the construction site and reinstatement of the landscape and surfaces on both the land and sea side.

Contractor should supply and operate a service Jack-up vessel next to the offshore substation (OSS). The Jack-up barge (JUB) shall be connected to the substation by two independent gangways and allow 24/7 access to the OSS. Scope includes: - Vessel supply including all organizational tasks around the JUB: - Vessel preparation - Updating of certificates - Moving (mob/demob) - If needed maintenance work etc. Offshore Logistics Services for the Jack-up: - Including base port - JU supply runs (fuel, water, food, spare parts, amenities,…) - Waste management - JU crew change etc.

The publication relates solely to the execution of a market consultation and not to an award procedure for the award of a contract to an economic operator, which would entail the provision of services! 50Hertz Offshore GmbH, Amprion Offshore GmbH and TenneT Offshore GmbH are planning to tender the execution of a Design Study for 2GW Platforms in the future, which can afterwards be used for the development of Offshore Substations projects stated in the German Grid Development Plan. Therefore we are asking to participate in the market consultation to provide your input regarding this study. All further information, as well as a questionnaire, are accessible under the following link: https://eliagroup.sharepoint.com/:f:/s/EFSS/EFSS/Ervvv_NBV5lBqyREG3bdF_sB6Kb6dW9bTOEW6v7OXKh7ZQ?e=JVfGYp If you are interested in participating in the Market Consultation for the "2GW Platform Design Study" please return the filled out questionnaire by mail to the below mentioned contact person latest by 17/01/2025: Benjamin Kirchner (50Hertz Offshore GmbH) benjamin.kirchner@50hertz.com In case of questions please feel free to reach out to the person mentioned above.