BusinessGreen: RWE Innogy and Siemens are on the brink of switching on the final turbines at the giant Gwynt y Môr offshore wind farm off the North Wales coast, after a setback last month caused by stormy weather. A spokeswoman for RWE told BusinessGreen all 160 turbines have been installed at the site off Liverpool Bay with commissioning activity on the last few under way. Once complete, the 576MW wind farm will be the largest in Wales and the second biggest in the world, after the 630MW London Array project...