CNN: The world’s largest offshore wind farm opened Thursday off the British coast, with 100 wind turbines capable of supplying enough electricity for 200,000 homes a year. The farm, off the coast of Kent in southern England, is part of a major renewable energy initiative spearheaded by the previous British government. Swedish energy company Vattenfall will operate the farm after having invested around 880 million pounds ($1.38 billion). British waters are an attractive place …