A solar system, like an automobile, is made of different parts, and each component should do its task properly. Getting the most energy from a PV array depends not only on module quality, but also on proper installation. To achieve the highest achievable solar energy, it is usually necessary to capture as much solar energy as possible and then minimize the waste of solar energy. This leads to a more efficient system and is possible if it is installed correctly.
Photovoltaic Cell is the heart of a module what produce Electricity by Solar Energy conversion. All we are utilizing today as Photovoltaic systems are indebted to Albert Einstein paper in 1905 that based upon Max Planck Theory of Black Body radiation.
Nowadays Photovoltaic Modules are well known enough that no need to introduce, but Modules data is based on Electrical or Mechanical on Technical catalogues mostly, what persuaded us to write something about Modules elements briefly.