FAQ
Stoura is a large-scale floating windfarm project currently in development off the east coast of Shetland.
Winds are stronger and more consistent offshore than in a comparable onshore wind project. There is greater potential to install larger turbines at sea relative to onshore. The combination of high wind speeds and larger turbines allows for more energy generation. Not only will an offshore wind farm generate more energy, but it will also generate energy on a more consistent basis. This makes it easier for the grid operator to integrate this renewable electricity source.
Floating turbines can be located in areas with sea depths over 60 metres, harnessing the best wind resources and opening new sites for power generation. Most offshore wind turbines today are fixed to the seabed, so-called bottom-fixed, and in more shallow waters. The next generation of turbines are designed to float in the water allowing development further out to sea where winds are stronger, but the water depths make bottom-fixed designs uneconomic. Most offshore wind floater designs are similar to the ones applied for the oil and gas platforms. Floating turbines are moored to the seabed with multiple mooring lines and anchors, in much the same way as a floating oil platform.
ESB is currently evaluating different floating wind concepts and will select the optimal solution for Stoura Offshore Wind Farm.
This area of seabed was identified in the Scottish Government's Sectoral Marine Plan for Offshore Wind. The wind resource in Scotland, particularly around Shetland, is excellent and will result in higher power production.
Suppliers who wish to register their interest in the project should contact us at shetland@esb.ie. Please include a description of the services offered and contact details for your company.