Business Green: Greenpeace has attempted to map out a viable alternative to Canada’s controversial plans to expand its tar sand projects, arguing that oil production from tar sands will be unnecessary by 2030 if the country accelerates the rollout of renewable energy technologies. The document, called Energy [R]evolution: a sustainable energy outlook for Canada, predicts one quarter of Canada’s primary energy demand could be met by renewable resources within 10 years, rising to three quarters by …