Biomass is the oldest renewable energy source. Its modern, increasingly sustainable uses apply to heating, electricity generation, biofuel production and biomaterials. Bioenergy is one of many resources available to help meet our demand for energy . It is a form of renewable energy that is derived from recently living organic materials known as biomass , which can be used to produce transportation fuels, heat, electricity, and products. Biomass contains stored chemical energy from the sun that plant produce through photosynthesis. Biomass can be burned directly for heat or converted to liquid and gaseous fuels through various processes. Liquid biofuels and biogas are energy carriers, or currencies, that are easier to use, transport, and store. Biomass energy is a renewable and sustainable form of power that uses organic materials like plants, crops, and waste. Learn how biomass is collected, processed, and converted into electricity, heat, and biofuels, and what are the advantages and challenges of this energy source.