MOWEA | Updates

By Dr. Till Naumann

Economic efficiency of the modular wind energy system from MOWEA


Dear Companists,

We want to thank you for your generous support and the great feedback. We have received many new contacts/enquiries for pilot projects, sales, and financing. €176,000 already in the first week - A big thank you to everyone!

In this update, we would like to present the MOWEA system's economic efficiency to you. We have also added this section to our profile. You will find it in the profile overview section under “Economic efficiency of the MOWEA system.”


Economic efficiency of the MOWEA system

The calculation of the amortization period (period within which the invested capital is returned) is based on

  • a frequency distribution of wind velocity from Hamburg and
  • the performance curve of a MOWEA single turbine

to determine the annual energy yield. A turbine thus produces 420 kilowatt hours of energy [kWh/a] per year in Hamburg if it is installed at a height of 10m. The energy yield increases with increasing installation height.


Performance Curve


The following diagram shows the advantage of a hybrid system (wind and solar energy) compared to the sole installation of a photovoltaic system at the Hamburg location. The use of two independent, regenerative energy sources reduces the cost of the required battery storage, since the wind usually blows when the sun is not shining (sun/clouds, day/night).

This also increases the safety of the system, as there are certainly days when the sun does not shine at all or when there is hardly any wind. The amortization period of the hybrid system is one year less than that of the solar system.


Advantage of Hybrid System


Another application is the mounting on telecommunication masts, a booming industry worldwide. The amortization period of a turbine system (8 units) in remote areas is only 2.2 years and thus represents an economical and sustainable alternative to the diesel generator. 

System costs of the application areas are listed as example calculations and offset against the saved energy costs.

In the case of an existing grid connection (on-grid), € 0.28 (average price per kWh at the energy provider) is assumed as a substitute.




In case there is no electricity grid (off-grid), the assumed substitute is € 0.5 (average price for one kilowatt hour per diesel generator).




This results in amortization periods of

  • 10 years for the hybrid system (wind + solar) (on-grid) compared to the solar system (100% self-sufficiency/independence)
  • 7.8 years for a house roof installation (on-grid)
  • 8.8 years for telecommunication (on-grid)
  • 2.2 years for telecommunication (off-grid)
  • 4.5 years for initial electricity generation, e.g. in developing countries (off-grid)


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