Navantia starts construction of the substation for the East Anglia One offshore wind farm

Navantia has started cutting steel at the Puerto Real shipyard for the electric substation of the UK’s East Anglia One offshore wind farm owned by Iberdrola. The first steel cut corresponds to the Cable Deck.

The scope of the contract includes the construction of a topside module and its jacket foundation at the Puerto Real shipyard, as well as the offshore support for its connection and commissioning in the North Sea. For Navantia, estimates reckon this will represent work for some 350 people although there will be “peaks of up to 600” over the coming 18 months.


This new contract, along with the contract to manufacture 42 jackets at the Ría de Ferrol yard for the same wind farm, represents a huge step forward in consolidating Navantia’s presence in the offshore wind sector, following on from the contracts already executed for the Wikinger farm that have been satisfactorily completed for Iberdrola.

East Anglia One is one of the largest offshore wind farms in the world

Thanks to an investment of almost €3bn, East Anglia One will be one of the largest offshore wind farms in the world when it enters into operation in 2020. Iberdrola’s installation will be able to cover the electrical power supply for over 500,000 UK homes.

With a contract value of almost €65m, its scope includes the construction of the substation, its support structure (jacket) and the offshore support for connection and commissioning in the North Sea. Construction is taking place at the Puerto Real shipyard in Cadiz.

This wind farm, the third such contract to be commissioned by Iberdrola worldwide, will be equipped with the largest wind turbines in existence to date, with a per unit capacity of 7 MW and a total height of 235 m.

The size of this initiative is unprecedented in Spain’s renewable industry. For example, the wind farm will occupy more than 300 km2 and will have an 85 km cable to carry the energy to the mainland. The surface area of the substation will be 1,144 m2 and each wind turbine blade will be 75 metres long.
East Anglia One is the third project to be undertaken by Iberdrola in the offshore wind power sector. Projects already underway in the UK by the company include the 389 MW West of Duddon Sands wind farm and the 350 MW Wikinger farm which is under construction phase.

Apart from the contract to construct the East Anglia One substation, Navantia’s Andalusian shipyards have also constructed the offshore substation for the Wikinger wind farm, being developed by Iberdrola in the German Baltic Sea, which was delivered in August 2016 and is now installed on site.