The race is on to reuse waste as energy in the most effective way possible. Combined heat and power is an old idea for saving fuel with a new imperative to slash emissions. Innovative furnaces based on biofuel systems will generate heat and power from waste materials with near-complete efficiency and very low emissions.
source https://www.lifetechnology.com/blogs/life-technology-technology-news/waste-not-want-watts-turning-waste-into-energy
