Efficiency increased, carbon emissions decreased: The project is based on the two-pronged energy policy strategy of increasing efficiency and substituting fossil fuels with renewable energy sources. It serves to protect the climate, increase resource efficiency, and help to safeguard the Allendorf (Eder) site. In addition to the complete reorganization of production under efficiency aspects, Efficiency Plus includes an innovative energy concept on the producer and consumer side, lean production, and a continuous improvement process, as well as waste avoidance and recycling.

On balance, this means that energy efficiency at the site has increased by more than 20 percent and the renewable energies’ share in the energy used has risen to 60 percent. This was accompanied by an 80 percent reduction in carbon emissions. Viessmann already achieved this result – and thus met the energy policy targets – in 2013.

Substituting fossil fuels

One element of Efficiency Plus is the Viessmann Energy Center. All forward-looking technologies are in action in the Energy Center, for example, highly efficient condensing boiler technology as well as combined heat and power systems. In addition, fossil fuels are increasingly being substituted by renewable energies. The main focus is on the use of solid biomass and biogas, solar energy from thermal solar or photovoltaic systems, and air or geothermal energy by means of heat pump technology.

Energy Center with efficient and environmentally friendly technologies

All energy sources relevant in the heat market are used in the Energy Center – oil and gas as well as biomass, solar energy, and heat from ambient air and the ground. Their highly efficient use is ensured by innovative technologies such as condensing boiler technology and combined heat and power systems. For this purpose, the Energy Center is structured in three levels:

  • two combined heat and power plants operated with bio natural gas cover the basic heat load and at the same time serve to produce electricity.
  • For higher heat requirements, for example, in winter, biomass boilers operated with wood chips are used. With the help of an ORC turbine, this heat is also used to produce electricity.
  • Oil and gas boilers with a downstream exhaust gas heat exchanger are used to cover peak loads and as redundant boilers.

Important step on the road to sustainability

Efficiency Plus is an important step on the road to sustainability. The project not only demonstrates that the energy and climate policy goals for 2050 can be achieved in the short term, but also that environmental protection and resource efficiency can be aligned with economic success and social responsibility. The project has met with a great response and is making an impact beyond the Allendorf (Eder) site due to its role model function.

The image shows Prof. Dr. Martin Viessmann and Moritz von Harling in the Viessmann poplar forest.

Sustainability at Viessmann

For generations we have seen sustainability as part of our responsibility. Would you like to learn more about how sustainable Viessmann works? 

Our Responsibility