Ostwind 3 OHVS for TSO 50Hertz – 300 MW

The Ostwind 3 offshore high voltage substation is located northeast of the island of Rügen, which is about 100 kilometres off the coast of the German town of Lubmin. The substation has a planned capacity of 300 MW. It is platform number eight with 50Hertz involvement in the Baltic Sea. The consortium HSI (HSM Offshore Energy, Smulders and Iv-Offshore & Energy) will be responsible for the engineering, procurement, construction, installation, and commissioning of the substation and jacket. The substructure of the OW3 OSS is a steel construction supporting the topside with 6 legs with 6 skirt piles (i.e. 1 at each leg). It is designed to be transported in a vertical orientation on a barge and installed by dual crane lift with ILT’s and floating spreader bars. The substructure height is approx. 66 m.

  • LocationGerman Baltic Sea
  • DimensionsTopside 68x37x21 metres (lxwxh)
    Jacket 40x28x66 metres (lxwxh)
    Piles 108 inch, length 75 metres
  • WeightTopside 5300 MT
    Jacket 4400 MT
  • Capacity300 MW
  • ContractEPCIC
  • Contract AwardOctober 2022
  • CompletionSail Away Q4, 2025
    Take-over mid 2026
  • ClientTSO 50 Hertz
  • Consultant / EngineerIv-Offshore & Energy
  • T&I ContractorHMC


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HSM Offshore Energy - Ostwind 3 OHVS (50 Hertz)