Business Green: More than 20 per cent of the US Eastern Seaboard’s electricity could be provided by wind turbines by 2024, according to a government report released yesterday. The two-year technical study by the National Renewable Energy Laboratory (NREL) examined the economic, operational and technical implications of the proposed move and concluded that such a large-scale increase in renewable energy capacity was ambitious but possible. “Twenty per cent wind is an ambitious goal, but this …