China installed more new solar capacity last year than the total amount ever installed in any other country.
China Installed More Solar Panels Last Year Than the U.S. Has in Total::China installed more new solar capacity last year than the total amount ever installed in any other country.
That would be the point of making panels and wind turbines themselves.
Ideally you'd want enough manufacturing capacity to power your whole country with renewables, in the time it takes for the first bits to start needing replacements.