18 Jun '14, 8am

Wind Turbines Reach Energy Payback Quickly

Researchers studying the environmental life cycle of 2-megawatt wind turbines found they recoup the energy required to manufacture and install them, and begin making a net energy contribution, in a matter of months. Writing in The International Journal of Sustainable Manufacturing , two authors from Oregon State University said there are virtually no carbon emissions associated with the energy that turbines produce. But there are environmental costs associated with manufacturing and installing the devices, as well as dealing with them at the end of their expected 20-year life span. Researchers based their findings on a study of two turbines in the Pacific Northwest and calculated energy payback at 5.2 months and 6.4 months. The full article appeared to be behind a pay wall, but summaries have been published at several websites, including Phys.org and Sciencespot . A life c...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/green-buil...

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