Co-generation is the process of a heat engine. It can also be referred to as a power station that helps in generation of heat and electricity.

Conventional power plants tend to emit the heat that’s created as a byproduct of electricity generated into the environment via cooling towers as fuel gas or by any other means. CHP or any bottoming cycle works towards capturing the byproduct heat for industrial or domestic heating purposes. The usage is more common in Scandinavia and Eastern Europe for distribution via pipes to heat local housing.


About 30 billion pounds of steam is produced in Con Edison, United States, every year through its seven co-generation plants. This is thereafter pumped into 100,000 buildings in Manhattan, the largest commercial steam system in the world. Byproduct tends to heat at moderate temperature (212-356˚F/100-180˚C) & can be utilized in absorption chillers for cooling. Polygeneration plant or trigeneration is usually a plant that produces electricity, heat and cold.

Co-generation can also be referred to as usage of fuel that’s thermodynamically efficient. In a separate electricity production, some amount of energy is required to be rejected as waste heat. However, the same energy is put into good use in co-generation.
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