BUSINESS

摘要

Wind energy: The US wind-energy industry installed more than 10 gigawatts (GW) of new wind-power-generating capacity in 2009, bringing the total capacity (all onshore) to some 35 GW - about 1.8% of the country's electricity generation.rnTexas has installed the largest capacity (9.4 GW),rnwhereas Iowa is the state most reliant on wind energy: its 3.7 GW generated 14.2% of its electricity last year.rnThe figures come from a report released on 8 April by the American Wind Energy Association, an industry group based in Washington DC. An inadequate transmission grid threatens further expansion of the industry, the report said.