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stupid question, africa has plenty of sand.. do they make panel locally ?

Not a stupid question! I think it depends on the quality and makeup of the sand, and what the design of the solar panel is. They're not pure silicon.

I'd imagine most are made in China as they are the biggest producer. There doesn't seem much production in Africa. https://en.wikipedia.org/wiki/List_of_photovoltaics_companie...