Siemens signed a turbine supply agreement with ScottishPower Renewables and DONG Energy to supply 108 offshore wind turbine generators rated at 3.6 MW each for the 389 MW West of Duddon Sands offshore wind project in the Irish Sea. A separate agreement covered turbine maintenance services for a five-year period, with turbine deliveries expected to start in summer 2013 via the Belfast installation facility.