Offshore wind farms

have so far been installed at shallow waters (-30 m) using gravity base structures or mono-piles. Sizes range up to 160 MW (Horns Rev), though significantly lager wind farms are planned. All are relatively close to shore and connected by AC. However, the potential at deeper water is huge provided that costs can be reduced to a competitive level. The relevant technologies for foundation appear to be tripod or jacket support structures (-70 m) and floating concepts for greater depths. Deep sea offshore wind farms are expected to be large, ~1000 MW and located +50 km from shore. The environmental conditions differ here considerable from standard onshore conditions and new, different design specifications have to taken into account.  The distant offshore location requires assessment of new systems for connection, e.g. HVDC and possibly hooked to sub-sea transnational connections or electrification of oil-rigs.

The project is targeted towards industrial value creation. The project is timely since the international development is at its very beginning and Norwegian offshore and energy industry have a competitive advantage.

The project partners (SINTEF Energy Research, IFE, Marintek, NTNU, Statkraft, Hydro, Statnett, Lyse) forms a strong alliance that carries on significant experience and knowledge within the field. The project will build on recent and on-going activities (KMB Development of Norwegian wind power technology 2001-2005, Wind Energy Strategic Program 2003 – 2007, HyWind, SWAY, etc) and also draw on an extensive international network.

Project summary

This project will combine wind technology know-how with offshore and energy industry experience to enhance development of deep sea (+30 m) offshore wind farms. The overall objective is to advance Norwegian development within this field, and pin-point technical solutions that ensure cost-efficiency of deep sea offshore wind farms.

The project comprises interdisciplinary tasks that are required for successful development of Norwegian deep sea offshore wind farms. The main goals and activities are:

  • Task 1: Progress of design tools (analytics, numerical methods and experiments) for the (structural, control, concurrent engineering) design of offshore wind energy concepts. The task includes institute research headed by Marintek and one PhD.
  • Task 2: Assessment of  wind turbine design solutions adapted for deep-sea conditions, including investigation of operational and extreme behaviour. The task includes institute research headed by IFE and one PhD.
  • Task 3: Provide solutions for cost effective grid connection and system integration of large deep sea offshore wind farms. The task includes institute research headed by SINTEF Energy Research and one PhD.


is by SINTEF Energy Research.

In cooperation with:



Contact: John Olav Giæver Tande , SINTEF Energy Research