The first prototype of GE Wind's new 2.X series of onshore wind turbines is to be installed next month at the Wieringermeer wind turbine test station in north Holland, reports the station's owner, the Dutch Energy Research Centre (ECN). The machine is a 2.5 MW version of the variable-speed, pitch-controlled turbine which also comes in 2.3 MW and 2.7 MW models. It has a hub height of 85 metres and a rotor diameter of 88 metres. ECN is to test the turbine prior to type certification. The turbine will be the second prototype at Wieringermeer, joining the Netherlands' largest turbine, a NEG Micon 2.75 MW model developed by a group calling itself Dutch Offshore Wind Energy Converter, now in place for a year. The further delivery of five Nordex 2.5 MW Nordex machines scheduled for last month is intended to "put the station on a sound commercial footing," says manager Wim Stam.