tag:blogger.com,1999:blog-26706564.post6504422028062908763..comments2024-03-25T07:51:47.758-04:00Comments on Thoughts On Economics: Energy Return On Energy Investment (EROEI)?Robert Vienneauhttp://www.blogger.com/profile/14748118392842775431noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-26706564.post-74624695320293635432009-10-30T10:59:35.406-04:002009-10-30T10:59:35.406-04:00I-O tables are certainly used in determining lifec...I-O tables are certainly used in determining lifecycle energy use, but you first need to determine the direct EROI on the natural resource extraction process itself and then the energy content per dollar of the sales of each resource sector in the I-O table.<br /><br />IOW, the existence of I-O models is why the focus of the EROI research is on the direct energy consumption of distinct energy resource technologies - that's the missing information.BruceMcFhttps://www.blogger.com/profile/08502035881761277885noreply@blogger.comtag:blogger.com,1999:blog-26706564.post-34269719790043735962009-10-27T03:59:42.609-04:002009-10-27T03:59:42.609-04:00I'm not happy with even my understanding of ho...I'm not happy with even my understanding of how to map actual NIPA data into price theory. But I think one should be able to also do accounting in labor value or in energy. I don't see one set of accounts as more conservative than another.<br /><br />I agree EROEI, as little as I understand it, doesn't take in account many issues of interest. I think input-output analysis can contribute towards analysis of, for instance, carbon or pollution in general.Robert Vienneauhttps://www.blogger.com/profile/14748118392842775431noreply@blogger.comtag:blogger.com,1999:blog-26706564.post-3333435816038134412009-10-26T06:13:14.601-04:002009-10-26T06:13:14.601-04:00I've always been dubious about this because fa...I've always been dubious about this because fans of EROEI tend to a) assume that it's a more rigourous metric than the ones The Economists use, and b) therefore the energy situation must be much worse.<br /><br />However, in a traditional return on investment calculation for an energy project, the cost side includes a lot more than just the fuel bill, so such a calculation is intrinsically conservative compared to EROEI.<br /><br />EROEI doesn't take in account energy quality or renewability or carbon-intensity, either.Alexhttps://www.blogger.com/profile/17153530634675543954noreply@blogger.com