Contemplating excess wind

How much usable energy do wind turbines produce? It is a question that perplexes engineers and frustrates potential users, especially on windless days. A study published this month in the International Journal of Energy provides a formula for answering this vexing question.

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<p><a href="http://www.physorg.com/news164375645.html">Contemplating excess wind</a></p> <p>How much usable energy do wind turbines produce? It is a question that perplexes engineers and frustrates potential users, especially on windless days. A study published this month in the <i>International Journal of Energy</i> provides a formula for answering this vexing question.</p>