is possible to Clone the Bitcoin blockchain and in the calculation, it does for the difficulty, instead of the global hash power given by the ASICs, put it the global production of clean energy connected to the grid, hen second step would be to reward not by performing a calculation but .. lottery? I don't know one of the methods already used maybe .. the more energy you produce the more chances you have of winning and A connected clamp meter maybe to check if it's clean energy?
I don't know if it possible, i hope that someone has an idea.