WtE covers a variety of technologies that are used to convert waste left after recycling into electricity and heat. Although it is often used to refer to the combustion of residual municipal solid waste, any process that uses waste as a fuel to produce energy is included in the term.
A combustion-based WtE facility requires burning residual waste at high temperatures without adding any additional fuel, and under controlled conditions. Emissions are cleaned before being released into the atmosphere to comply with strict air quality standards. Heat is used to create steam from the combustion process, which drives a turbine to generate electricity. Heat can also be recycled to provide low pressure steam, hot water, space heating or even refrigeration for use in industrial or domestic buildings.
References: What is energy from waste