Net loss a year earlier was $4.4m, when the company was not publicly traded.

Sales during the period were $41.7m versus $34.3m a year earlier.

For 2013, Pattern had a $10m net profit compared with a $13.3m net loss a year earlier. Revenue increased to $201.5m including $173.2m from electricity sales, versus $114m and $101.8m from power sales a year earlier.

“This was a tremendous year for Pattern Energy that included our successful IPO – the first US listing of a wind power company – the growth of our portfolio to ten projects totaling 1,255MW and the declaration of our first quarterly dividend,” says chief executive Mike Garland.

In 2013, Pattern Energy acquired 45% of the 149MW Grand Renewable wind power project in Ontario...