1. What Is Biomass Energy 🌿 ? Biomass energy refers to energy derived from organic materials — such as wood, agricultural residues, forest waste, animal manure, or dedicated energy crops. It is considered part of the renewable energy mix because the carbon released during combustion can, in theory, be reabsorbed by new plant growth , creating a closed carbon cycle . Examples of biomass energy sources: Wood pellets and forestry residues Agricultural waste (corn stalks, r