"AMSC suddenly has a very stressed balance sheet and it would likely need to raise about $100m-200m to get the deal done and maintain a comfortable cushion," says Citigroup analyst Timothy Arcuri.
AMSC's stock tumbled as much as 50% after it revealed on 31 March that Sinovel, China's top wind turbine producer, had turned away deliveries of core electrical components and spare parts for 1.5MW
