BRUSSELS: The first of GE's longer-blade 2.75MW turbines will be ready to go on sale this summer, after commissioning at the Energy Research Centre of Netherlands' wind farm in Wieringermeer, North Holland province. The 2.75-103 machine combines "evolutionary" electrical system uprates and GE's 50.2-metre proprietary blade design to create a unit that promises an annual energy production increase of more than 9% over the company's 2.5-100