Cogeneration
![Trigeneration cycle](/Images/godic/202501/05/Trigeneration_Cycle2017.jpg")
![Masnedø CHP power station in Denmark. This station burns straw as fuel. The adjacent greenhouses are heated by district heating from the plant.](/Images/godic/202501/05/Masnedø_power_station2017.jpg")
![A cogeneration plant in Metz, France. The 45MW boiler uses waste wood biomass as energy source, and provides electricity and heat for 30,000 dwellings.](/Images/godic/202501/05/Metz_biomass_power_station2017.jpg")
![A cogeneration thermal power plant in Ferrera Erbognone (PV), Italy](/Images/godic/202501/05/Power_plant_at_sunset2017.jpg")
Cogeneration or combined heat and power (CHP) is the use of a heat engine or power station to generate electricity and useful heat at the same time. Trigeneration or combined cooling, heat and power (CCHP) refers to the simultaneous generation of electricity and useful heating and cooling from the combustion of a fuel or a solar heat collector.