"We examine 119 wind turbines from 50 different analyses, ranging in publication date from 1977 to 2007. We extend on previous work by including additional and

"We examine 119 wind turbines from 50 different analyses, ranging in publication date from 1977 to 2007. We extend on previous work by including additional and more recent analyses, distinguishing between important assumptions about system boundaries and methodological approaches, and viewing the EROI as function of power rating. Our survey shows an average EROI for all studies (operational and conceptual) of 25.2 (n = 114; std. dev = 22.3)." https://www.sciencedirect.com/science/article/abs/pii/S096014810900055X https://www.sciencedirect.com/science/article/abs/pii/S09601... Even a quick glance at Wikipedia would have helped: https://en.wikipedia.org/wiki/Energy_return_on_investment#Wind_turbines https://en.wikipedia.org/wiki/Energy_return_on_investment#Wi... TL;DR: Wind Mill EROI is at least about 20, i.e. they produce about 20x the energy that production and maintenance consume.