Nowadays, the energy transition imposes a huge increase in renewable power sources. So energy utilities, such as Edison S.p.A. is evaluating whether to increase the capacity installed of photovoltaic (PV) plants. Specifically, one of the sectors that this technology can reach is the rooftop application which presents specific aspects and problems. In this framework, this study aims to find technological devices that allow the increase of the techno-economical feasibility of rooftop PV plants. The work began with a literature review to find out the market trend in PV technology in order to establish which technology can become the golden standard in the near future.