FT.com: An ambitious plan for an electricity “supergrid” in the North Sea was launched last week by a group of 10 leading European companies.Such a supergrid connecting the UK, Germany, and Norway is expected to cost $40 billion.The Friends of the Super-grid group, which includes Siemens and Hochtief of Germany, Areva of France, and Prysmian of Italy, said the project would make it possible to develop high volumes of offshore wind power in the North Sea and reduce electricity prices.