It's common that denialists and delayists maintain that the CO2 emitted during the manufacture of wind turbines, solar cells and batteries is more than the emissions they save during their lifetime. This is false.
From a tweet by Zeke Hausfather. Note that this is with current technologies, so that, for example, the steel for wind turbines, and the solar panels, is made using fossil fuels. Even with that, wind and solar have miniscule embodied emissions compared with fossil fuels.
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