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Toward super-size wind turbines: Bigger wind turbines do make greener electricity

Date:
June 20, 2012
Source:
American Chemical Society
Summary:
In a study that could solidify the trend toward construction of gigantic windmills, scientists have concluded that the larger the wind turbine, the greener the electricity it produces.

In a study that could solidify the trend toward construction of gigantic windmills, scientists have concluded that the larger the wind turbine, the greener the electricity it produces. Their report appears in ACS' journal Environmental Science & Technology.

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Marloes Caduff and colleagues point out that wind power is an increasingly popular source of electricity. It provides almost 2 percent of global electricity worldwide, a figure expected to approach 10 percent by 2020. The size of the turbines also is increasing. One study shows that the average size of commercial turbines has grown 10-fold in the last 30 years, from diameters of 50 feet in 1980 to nearly 500 feet today. On the horizon: super-giant turbines approaching 1,000 feet in diameter. The authors wanted to determine whether building larger turbines makes wind energy more or less environmentally friendly.

Their study showed that bigger turbines do produce greener electricity -- for two main reasons. First, manufacturers now have the knowledge, experience and technology to build big wind turbines with great efficiency. Second, advanced materials and designs permit the efficient construction of large turbine blades that harness more wind without proportional increases in their mass or the masses of the tower and the nacelle that houses the generator. That means more clean power without large increases in the amount of material needed for construction or fuel needed for transportation.

The authors acknowledge funding from the European Commission.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Marloes Caduff, Mark A. J. Huijbregts, Hans-Joerg Althaus, Annette Koehler, Stefanie Hellweg. Wind Power Electricity: The Bigger the Turbine, The Greener the Electricity? Environmental Science & Technology, 2012; 46 (9): 4725 DOI: 10.1021/es204108n

Cite This Page:

American Chemical Society. "Toward super-size wind turbines: Bigger wind turbines do make greener electricity." ScienceDaily. ScienceDaily, 20 June 2012. <www.sciencedaily.com/releases/2012/06/120620113334.htm>.
American Chemical Society. (2012, June 20). Toward super-size wind turbines: Bigger wind turbines do make greener electricity. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2012/06/120620113334.htm
American Chemical Society. "Toward super-size wind turbines: Bigger wind turbines do make greener electricity." ScienceDaily. www.sciencedaily.com/releases/2012/06/120620113334.htm (accessed October 31, 2014).

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