Combined heat and power production (CHP), or simply “cogeneration”, applied in the residential sector offers a wide spectrum of benefits. Cogeneration systems utilizing internal combustion engines that run on fuel gas can contribute to significant financial savings on fuel costs used to provide electricity and heat. Tax policy in some countries is beneficial to the owners of combined heat and power plants.
Stable power supply and autonomous homes
The natural gas supply from the local city network can be used in the gas engine-based cogeneration systems providing a stable supply of electrical power. When needed, power supply can be isolated from the local electricity grid and serve the local loads of the residency. The heat produced by the engine can be recovered either as hot water or as steam for use by surrounding operations. Moreover, the recovered heat can be fed into an absorption chiller to produce a source of cold water, if there is a local need for cooling loads. This cold water can in turn be used to support a refrigeration or air conditioning system. Such systems, providing electricity, heat and cooling, are called trigeneration plants.