Wind powered generation in Ontario has passed the 1 TWh mark. Statistics released by Ontario's Independent Electricity System Operator (IESO) shows the output from the 415 MW of installed wind generation totalled 1.04 TWh, about 0.75% of the province's total generation. In 2006, wind produced 0.44 TWh. "With an additional 700 MW scheduled to come into service over the next 18 months, wind will play an increasingly important role in Ontario's supply mix," says IESO CEO Paul Murphy. Total annual energy use in the province in 2007 was 152 TWh, up slightly from the year before.