Waste-to-energy (WtE) plants are facilities that burn municipal and industrial waste to
generate electricity and heat. They are a way to manage waste, reduce greenhouse gas
emissions, and recover valuable resources. Waste-to-energy plants cause less air pollution
than coal plants. It is carbon-negative, processing waste into fuel releases considerably less
carbon and methane into the air than having waste decay away in landfills or bodies of
water. Waste-to-energy plants incinerate 80 to 90 percent of waste. Sometimes, the residue
ash is clean enough to be used for some purposes such as raw materials for use in
manufacturing cinder blocks or for road construction. In addition, the metals that may be
burned are collected from the bottom of the furnace and sold to foundries. Some
waste-to-energy plants convert salt water to potable fresh water as a by-product of cooling
processes.
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