Cogeneration or Combined Heat and Power (CHP) is the production of electrical power, hot water and steam to use in production. Utilizing the waste heat generated by a reciprocating engine or micro turbine, it provides usable hot water to supplement a facilities heat load. A well-designed cogeneration plant can provide efficient energy power while reducing the cost of power.
A Heat Recovery Steam Generator (HRSG) system is an energy recovery heat exchanger that recovers heat from a hot gas stream. It produces steam that can be used in a process (cogeneration) or used to drive a steam turbine (combined cycle).