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Une communauté dédiée à l'achat de produits Canadiens.
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Related communities: Communautés connexes :
!buyeuropean@feddit.uk !buyafrican@baraza.africa !boycottus@lemmy.ca !canada@lemmy.ca !canada@lemmy.ml
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Solar has an EROI of between 1/5 and 1/10 (and improving), not 1/3. Wind is between 1/10 and 1/15. By excess solar, I mean the energy that is generated during the day that otherwise isn't used and is sometimes curtailed by the grid. It's definitely better to charge batteries with that, but you could use it for other things as well if all the batteries are full.
And yes, carbon capture is a PR exercise by the fossil fuel industry, you'll get way better returns doing anything else.
Edit: and gas has an EROI of 30/1, what has 1000/1?
"The EROI for discovering oil and gas in the US has decreased from more than 1000:1 in 1919 to 5:1 in the 2010s, and for production from about 25:1 in the 1970s to approximately 10:1 in 2007 (Guilford et al., 2011)."
https://www.sciencedirect.com/science/article/pii/S0301421513003856
Edit: from the same source.
An examination of the EROI literature on solar photovoltaic or PV energy generation shows differences in the assumptions and methodologies employed and the EROI values calculated. The values, assumptions, and parameters included are often ambiguous and differ from study to study, making comparisons between PV and other energy EROI values difficult and fraught with potential pitfalls. Nevertheless, we calculated the mean EROI value using data from 45 separate publications spanning several decades. These values resulted in a mean EROI value of roughly 10:1 (n of 79 from 45 publications) (see Lambert et al., 2012 for references) (Fig. 3). It should be noted that several recent studies that have broader boundaries give EROI values of 2 to 3:1 (Prieto and Hall, 2012, Palmer, 2013, Weissbach et al., 2013)