The deal, which replaces one signed in 2008, also includes closer ties in maintenance services, with a goal of making Gamesa the lead supplier in this area.

To that end, Iberdrola has awarded Gamesa a contract to maintain1.75GW of 650kW and 850kW turbines in Spain and Portugal, and extends by one year a maintenance arrangement on 2.3GW of 2MW machines.

The two firms will collaborate on new areas of research in provision of maintenance services and also management of those services in the US, where Iberdrola