In Minnesota, Xcel Energy estimates conservatively that it will cost $532,000 (in 2019 dollars) to decommission each of its wind turbines—a total cost of $71 million to decommission the 134 turbines in operation at its Noble facility. Decommissioning the Palmer’s Creek Wind facility in Chippewa County, Minnesota, is estimated to cost $7,385,822 for decommissioning the 18 wind turbines operating at that site, for a cost of $410,000 per turbine.
Restoration activities include the removal of all physical material and equipment related to the project to a depth of 48 inches. Most of the concrete foundations used to anchor the wind turbines, however, are as deep as 15 feet. The concrete bases are hard to fully remove, and the rotor blades contain glass and carbon fibers that give off dust and toxic gases. While most (90 percent) of a turbine can be recycled or be sold to a wind farm in Asia or Africa, researchers estimate the United States will have more than 720,000 tons of blade material to dispose of over the next 20 years, a figure that does not include newer, taller higher-capacity wind turbines.
via CanadaFreePress.Com
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