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We need to look at lifecycle outputs, just as with CO2. This article for example models material inputs for theoretical PV, wind and battery scenarios and the required increases in metal supplies (=which means in mining) are quite shocking. This is purely because of very low surface power density and capacity factor of both energy sources and cannot be improved significantly by technology improvements.
https://www.sciencedirect.com/science/article/pii/S0301421518302726
