Thanks to the recent high efficiency achievements of the BiSoN Cell with 5.17 W on the front side, produced at MegaCell’s Italian factory and equipped with four busbars, it is now possible to produce a bifacial 300-Wp module with 60 cells.
Starting with the bifacial high efficiency (21%) N-type monocrystalline BiSoN cell, the technical staff of MegaCell has implemented a new bifacial module that adds 270 Wp of rear power to the 300 Wp front power thanks to the high bifaciality factor of 90%. The rear, when irradiated by reflected and diffused light, produces an average of 25% of the power generated by the front, and therefore the total module power (front + back) reaches 375 W.
The BiSoN is an advanced “glass on glass” module, with two layers both 2-mm thick, which has allowed the team to construct a module with an annual power loss of just 0.3%, as opposed to losses of 0.8% from standard modules.
Tests performed by the Fraunhofer Institute show no indication of LID (Light Induced Degradation) or PID (Potential Induced Degradation), phenomena that generate initial power losses of 2-3% (LID) and severe reliability problems only three to four years after the installation of standard modules.
The technology of the BiSoN modules means that photovoltaic systems can be built which have over 50 years of useful life and produce higher amounts of energy, optimizing investments and greatly reducing costs per kilowatt hour (LCOE).