One of the largest wind farm developers in the UK has paid more than half a billion dollars for a slice of the booming US wind power market. Denmark’s Orsted, formerly known as Dong Energy, has been actively hunting out long-term opportunities in the US to complement its record-breaking offshore developments in UK waters. It used its better-than-expected first-half financial results to announce plans to pay $580m (£450m) for Chicago-based onshore wind farm developer Lincoln Clean Energy.