• Polycrystalline cells:
    max. 150 Wp/m² - 156 mm x 156 mm – dark-blue colour
  • Monocrystalline cells:
    max. 160 Wp/m² 156 mm x 156mm or 125 mm x 125 mm – black colour
  • Solar power cells:
    max. 170 Wp/m² 125 mm x 125 mm – black
  • Coloured cells:
    Depending on colour, max. 110 Wp/m² 156 mm x 156 mm – available in different colour versions as required
  • Semi-transparent cells:
    Depending on perforation max. 100 – 140 Wp/m² 156 mm x 156 mm - black colour


What are the yields with a photovoltaic system?

  • The yields of the respective photovoltaic system depend on various factors, including cell type, cell colour, imprint/degree of imprinting of glass, number of cells in the module and semi-transparency.

  • In general, the installed capacity of a cell, a module or an entire system is expressed in Wp or kWp. Wp stand for Watt Peak - the peak power under certain conditions, also known as standard testing conditions (STC). This means the following three factors: Temperature of 25° C, irradiation of 1,000 Wm² and air mass of 1.5 (depending on the air layer in the atmosphere)

  • Orientation: Depending on location and position, higher and lower yields may result. South-facing units inclined between 30° and 45° achieve the highest annual yields in Central Europe. In winter, however, a 90° orientation, as in a façade or balcony railing, can generate higher yields than an optimally inclined one.

  • Losses via inverters and electrical components must also be considered; temperature is just as important as an influencing factor, since overheated units will provide low yields (here also a 90° orientation is ideal, since this is not directly irradiated and therefore not so easily overheated). Shading: depending on the proportion of the unit in shade often or over a long period of time, yields also drop considerably)

  • Calculating the generation of your own planned unit:

    Europa: http://re.jrc.ec.europa.eu/pvgis/apps4/pvest.php

    Afrika: http://re.jrc.ec.europa.eu/pvgis/apps4/pvest.php?map=africa&lang=en



Module sizes are freely selectable at ertex solar. Modules measuring up to 2440 mm x 5100 mm are possible. Because our parent company Ertl Glas AG has over 60 years of experience, there is no problem in terms of statics or functions in the production and processing of such large modules.

ertex solar specialises in custom-made products, meaning that design freedom is virtually unlimited for architects and builders. Module sizes, colour variants and different services can be individualised and customised. Individual cells can also be designed with different colour and density. Semi-transparent cells can in turn be perforated with an individual pattern and cells can be arranged freely within the modules.

In BIPV systems, two worlds must be united in principle. On the one hand, electrical engineering and photovoltaics, and on the other hand, construction and glass.