Guardian: It was barely 18 months ago that council leaders on the Isle of Wight announced they had drawn up plans to become the world’s first “eco-island”, to be powered entirely by renewable energy. The small island would become self-sufficient and even an exporter of low-carbon power, local politicians boasted. They pointed out that it was already home to Vestas Blades, the UK subsidiary of the largest wind turbine manufacturer in the world. But Vestas’s totemic manufacturing plant at …