Energy recovery is a waste treatment process that generates energy in the form of electricity, heat or fuel. Energy recovery is a preferable waste handling process than sending to landfill. However, it should be considered as one of the last options at the end of life, after reuse, refurbishing and recycling.
There are three types of energy recovery technologies:
Energy recovery may also be the capture and reuse of released heat from air and water systems. Buildings or infrastructure projects may recovery the heat from used air or water for pre-heating other buildings systems, saving energy and emissions.