This is how combined heat and power generation saves energy: based on 100 kilowatt-hours (kWh) of primary energy from a fuel, a typical CHP plant generates 62 kWh of heat and 28 kWh of electricity. With separate generation in a boiler and a thermal power plant, considerably more fuel is required to achieve the same result: (73 + 80 = 153 kWh). Therefore the combined heat and power generation (CHP) saves 35 per cent of the energy in comparison. Depending on the fuels used, CHP plants also produce around 29 per cent fewer CO2 emissions.
Combined heat and power generationSaving a third of the energy
Projects currently being funded
CO2 capture in oxyfuel coal-fired power plants
Higher pressure and lower flow losses in turbines
Capturing CO2 using coal gasification
CO2 scrubbing (post-combustion capture)
Hydrogen gas turbines
Higher temperatures in turbines
CO2 capture using lime or metal (looping)
Separating gases using membranes
Lignite drying
More flexibility for low-emission coal-fired power plants
International cooperation
More efficient generators thanks to nanoparticles
CO2 storage facilities
Micro gas turbines
Turbine combustion that produces lower amounts of harmful substances
CO2 compressors
Comparison of power plant systems
Efficiency of over 60% for the Irsching gas and steam power plant
Materials of construction for steam temperatures of over 700 °C
Storing electricity using compressed air
High-temperature heat storage systems for flexible CCGT power plants