Polycrystalline Photovoltaic Panels

Photovoltaic systems when exposed to sunlight convert 5-17% of the absorbed solar energy into electricity. The exact percentage depends on the technology used. The silicon modules are divided into three categories, depending on the structure of the basic material or their particular production.

The different types are:


  1. Monocrystalline silicon solar cells: The basic material is a single crystal. The material thickness is approximately 200mm. Their performance in the form of solar panels varies between 16 to 19% (percentage of absorbed solar conversion to electricity). Characterized by high manufacturing costs.
  2. Polycrystalline silicon solar cells (Production of Stibetherm S.A.). The material thickness is approximately from 160 to 200 mm. Their performance in the form of photovoltaic panels is between 15 and 18% (percentage of absorbed solar conversion to electricity). The cost of production is lower than that of the monocrystalline modules.
  3. Amorphous Silicon solar cells (amorphous silicon or thin film): The technology of thin film has a thickness of 15mm. Their electricity production ranges from 6% to 8% (percentage of absorbed solar conversion to electricity).


The production of the company focuses on polycrystalline photovoltaic modules because of the ideal relation between cost and efficency compared to other types.The machinery used for the production has been imported from Japan. It is worth noting that in the production process of photovoltaic modules the mechanical equipment of the solar thermal systems is used for the cutting and the creation of the frames for the photovoltaic modules.