Bruno Windels bwindels

Notes while trying to wrap my head around the discussion held at https://www.researchgate.net/post/Why_is_quality_of_life_limited_by_EROI_with_renewable_Energy.

The discussion there revolves around, and my initial calculations indeed were, as James E. Miller presents them, that you input an initial 1 unit of enery, and with a PV or 3:1 EROI, you take 1 for society, and 1 for investing in another PV, and stack that way. This reasoning does seem to imply that you can stack them, but ignores the fact that a society of comparable complexity (a prerequisite to being able to build PVs in the first place) to ours (so every person in society) needs an EROI of 15-10:1

So, if you scale the example down to a few PVs, you also have to scale the whole machinery we have for PV production down. For that to work, everybody needs an EROI of lets say 10:1, and all those people are all assumed to work ~8 hours per day at current well-being levels. If you need more people to do the job, PVs become more expensive (or require mo

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