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This is directly tied to EROEI. If the EROEI of a cell is greater than 1X, it will produce more energy that it took to manufacture it. In that case it's net-neg
by api 11y ago
This is directly tied to EROEI. If the EROEI of a cell is greater than 1X, it will produce more energy that it took to manufacture it. In that case it's net-negative -- over time it replaces fossil fuels in a net sense.
Lately I've read EROEI numbers for solar PV from 10-15X.
So no, this is not true, and likely has not been true for a long time. It might have been true back when PV was kind of a lab curiosity and niche item.
- Gibbon1 11y agoThe interesting thing is the EROEI (energy returned on energy invested) for oil and gas has been falling for a century. I remember reading somewhere a claim that historical EROEI for crude oil. Year EROEI 1920 125 1970 30 2010 15 Things like tar sands are less than 10.