Ontario should rely much more heavily on renewables than currently contemplated, says a new study from the Pembina Institute and the Canadian Environmental Law Association. The province, Canada's largest electricity market, is desperate for new generation capacity. The government has set targets requiring 5% of all generating capacity, about 1350 MW, to come from renewables by 2007 and 10% by 2010. But the study's authors say it should aim much higher, recommending it issue requests for proposals for 4500 MW of new renewable capacity by 2010, 7100 MW by 2015 and 9800 MW by 2020. About 7000 MW of the total would likely be wind power generation, the study says. If the province invests $18 billion in energy efficiency over the same period, the report says, it would not need to consider new nuclear generation. "Ontario is now at a crossroads in its future energy path, and the decisions made about electricity policy over the next year will set the province's course for the next 20 or 30 years," says Mark Winfield, one of the report's authors.