Who thinks that? But solar panels can convert north of 20% of incident light to usable power. The most efficient known plant chemistry can convert 4% of inciden

Who thinks that? But solar panels can convert north of 20% of incident light to usable power. The most efficient known plant chemistry can convert 4% of incident light to sugar, the principal constituent of cellulose. Most plants are at 2%. But of course we have needs for such output not satisfied by electric current.