BIFACIAL MODULE - THE ROLE OF O&M IN OBTAINING THE BIFACIAL BOOST!




Solar PV has now obtained a steady position in the world energy mix. The current research is to have enabled power output from the solar module of the same size. When talking about enabled power output, one cannot ignore bifacial module. Capable of producing power output from both the sides, bifacial module primarily depends on the light reflectivity from the ground surface (which is also known as the albedo) onto which it is installed. While there have been various studies on installation methods, designing, reliability, etc. of a bifacial module it is also important that adequate care being taken during O&M of the power plant. These modules require cleaning not only on the front and the back side but also adequate cleaning and uniform maintenance is required of the ground surface. While the concept of cleaning is already known, for a bifacial module which generates power from both the sides, any slightest (and non-uniform) dust on (few) modules/strings in a power plant would lead to a mismatch in the current generation. Considering a bifacial power plants of larger sizes with large number of modules connected in series, such mismatch would directly affect directly affect the reliability of bifacial module. While there are bypass diodes already mounted in the junction boxes of the modules and would activate when such mismatch occurs, it is important to prevent such situations at the first hand. While the market share of bifacial module is poised to be more than 50% by the next decade, we believe that educating end customers and EPC players on such small technical aspects would enable widespread and correct implementation of such technologies.

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