Home Sitemap Imprint Cogeneration or combined heat and power generation, CHP, involves  the simultaneous generation and use of heat and power. The power is  either used within the company or fed into the public networks. The  generated heat, for instance, provides the heating for public and private  buildings via district or local heating networks or it is used to supply  firms with process heat.   Level of Efficiency A comparison of efficiency levels demonstrates the tremendous  difference combined heat and power makes. The level of efficiency with  thermal power plants without CHP merely reaches 30 to 45 percent! A  far higher level of efficiency of 60 to 90 percent is achieved by CHP-  plants due to the simultaneous output of heat and power.**  Mini-CHPs  Small CHP-plants are gaining importance regarding the supply of  individual firms or residential areas, or several single and multiple familiy  homes. The higher level of efficiency of these mini and micro-CHPs  leads to a lower energy demand from large power plants and reduces  CO₂ emissions as a result of the fuel saving. In Germany, the expansion  of CHP-plants is furthered by the CHP-Act.  Environmental protection and economic efficiency   The Renewable Energies Act (EEG) is also based on the CHP-Act, but  supports the use of renewable resources. This makes sense, because  during the energy generation process fuels obtained from renewable  resources produce the same amount of carbon dioxide, which was  originally removed from the atmosphere by those resources.  Therefore  this form of energy generation is also considered CO₂-neutral. As a comparison: according to calculations made by the Öku-Institut  Darmstadt, a brown coal power station emits over 1,400 grams of CO₂   during the production of one kilowatt hour of electricity and two kilowatt  hours of heat. The most sensible combination of CHP and renewable  energies is provided by the so-called cogeneration or combined heat  and power plants (CHPs). These CHPs have the advantage that they  generate energy, where it is needed and that they are CO₂-neutral, thus environmentally friendly. They feed the generated power into the public  network and distribute their waste heat, for instance, via a local heating  network. The short distances reduce energy losses and thereby further  increase the level of efficiency. * BUMBLEBEE-FACTS CHP-plants usually produce heat and power at a 3:2 ratio. Our "bumblebees" reach a ratio of 1:1! ** BUMBLEBEE-FACTS Due to the efficient cogeneration, our "bumblebees" achieve an efficiency level of 85 to 91 percent!