Iberdrola-owned developer Ailes Marines has awarded a contract to a joint venture formed by Eiffage Métal and Engie Solutions to fabricate a giant substation for the €2.4bn ($2.72bn) Saint-Brieuc wind farm off France.

The substation for the 496MW wind farm comprises a 63-metre high jacket foundation weighing around 1,630 tonnes and 315 tonnes of piles, plus a topside weighing approximately 3,400 tonnes. The topside will be 55 metres long, 31 metres wide and 23 metres high.

Eiffage Métal will be responsible for the engineering and construction of the steel structures for both the topside and jacket.