I found the website, but could not find the page for this illustration -- and it is in a directory called "draft", which I assume doesn't mean wind. :)
I question the data because I have seen several (academic non-industry) studies that show all of those sources as having wider EROEI ranges that also go far higher -- as much as 80 or 100. Several threads with citations from different proponents may be found by searching
http://www.theoildrum.com">The Oil Drum website.
If this is just about nuclear energy, I can tell you that the non-industry and non-Greenpeace average EROEI estimates generally
start at around 10 though some estimates are certainly lower. (The costs of ALL energy sources are now changing very quickly.) The
http://www.world-nuclear.org/info/inf11.html">nuclear industry cites EROEI figures up to about 60 and the anti-nuclear movement would have you believe it is more like 0.000001.
Wind power per se can have a very favorable EROEI, up to 100 in some select wind farms. If you read the nuclear link, you will also find some key information that reflects well on wind energy. (I don't know a single nuclear energy supporter who opposes wind energy.) But the cost of energy storage, which will be required when more than about 15-20% of our primary "grid" energy is wind-produced, cuts deeply into its EROEI at this point. And that's the biggest sticking point, as far as I can see -- other than poorly-planned and -built wind farms, of course. I believe that basic research in energy storage technology is a more pressing need than R&D in energy production, even if we were to build a large number of nuclear power plants.
I can post in more detail when I get more time, and I'm sure others may also want to take a shot at this.
And note:
Any revolution in energy use is going to be expensive and difficult, and it won't please everybody. (I know, I should start a thread about it, and keep The Dreaded Form Of Energy out of the OP.)
--p!