Wind Turbine Foundations

Wolfe Island Wind


The view looking across Lake Ontario towards Wolfe Island from the campus of Queen's University in Kingston, ON, changed considerably starting in the spring of 2009 when 86 wind turbines began to be erected atop foundations built during the previous fall and winter. Canadian Hydro Developers' Wolfe Island Wind project features 67 foundations bearing directly on bedrock and tied down by post-tensioned, solid bar rock anchors, as well as 2 foundations supported and tied down by a combination of rock-socketed piles and rock anchors. By the time their work was completed in March 2009, Geo-Foundations' crews had drilled, installed and load tested 1,072 rock anchors and 64 rock-socketed piles. The encapsulated, 46mm diameter, 1030MPa solid bar rock anchors are embedded 8 metres in rock and resist design loading of 600kN each. Rock anchor work commenced in September 2008 and was completed on a turbine by turbine basis all through the fall and winter as each site came available. The 198 MW project began generating power in June 2009.