AMSC’s net loss for the July to September period – its financial second quarter – was $14.6m, compared to a deficit of $15.9m in the same three months of 2012.

Quarterly revenues grew $3.3m to $24.2m, with both the Wind and Grid divisions managing an increase.

Daniel McGahn, AMSC’s CEO, said: "We grew revenues by 16% year over year, improved gross margins nearly threefold and reduced our non-GAAP net loss by more than 30%.

“We