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To: J_F_Shepard who wrote (3852)	10/30/2006 10:59:31 PM
From: Wharf Rat	Respond to of 10087

You can make them small enuf to go on your roof. Message 22627788 Energy from Wind: A Discussion of the EROI Research EROI = (cumulative electricity generated) / (cumulative primary energy required) This article reviews 112 wind turbines from 41 different analyses, ranging in publication date from 1977 to 2006. This survey shows average EROI for all studies (operational and conceptual) of 24.6 (n=109; std. dev=22.3). The average EROI for just the operational studies is 18.1 (n=158; std. dev=13.7). This places wind energy in a favorable position relative to conventional power generation technologies in terms of EROI. theoildrum.com