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> Solar panels are known to leak lead in the environment.

I suspect you are grasping for excuses. Do modern panels have significant lead in them? Also there is a huge abundance of lead in our city environment already (paints, leaded petrol). Even if there is lead in panels, it is concentrated, and I suspect the total amounts in panels would be at least three orders of magnitude less than that. Back when we used alkyllead additives in petrol, it was about 0.5g lead per litre[1], which would be an astonishing amount of lead put into our direct environment.

And those used panels will still have value to people (eg third world) and will get reused, giving excess value to poor countries.

[1] https://www.google.co.nz/search?q=%22grams+lead+per+gallon%2...




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