Biomass

Energy from plants is known as biomass energy. It is a rich source of carbon and hydrogen, and one that can be used within the natural carbon cycle. Examples include burning wood and biogas. Biogas is a mixture of gases produced by decaying waste and animal droppings. Fast-growing plants such as switchgrass willow can be harvested as power crops. Biomass wastes, including forest residues, lumber and paper mill waste, crop waste, garbage and landfill and sewage gas, can be used to produce heat, transportation fuels and electricity while at the same time reducing environmental burdens.