Bioenergy mainly refers to energy from biomass, and energy from biomass refers to energy that is directly or indirectly converted to chemical energy by photosynthesis in green plants and then fixed and stored in the body. I will. It comes directly or indirectly from the photosynthesis of green plants and can be converted to traditional solid, liquid and gaseous fuels. It is inexhaustible and inexhaustible. It is the source of renewable energy and the only renewable energy. Carbon source.