Invention technical field is the areas of: Photovoltaic solar panel for electricity production, desertation ground effect through the forthcoming extensive use o solar panels, Rainwater harvesting, Irrigation and ground fertilization. The main idea of the invention is to collect rainwater on the lower edge of a photovoltaic panel and store it in a tank. With this water we subsequently can: irrigate the land for agriculture use, collect local or away the water for any other use, refrigerate the photovoltaic back or front panel, clean the glass of the panel surface. Results are soil cultivation for plant or animal production, greenhouse effect improvement, photovoltaic panel lower temperature with 30% efficiency, photovoltaic front panel glass cleaning with better efficiency. All process are handled by PLC, a programmable Logic Computer. According to the desired use there are 7 system configurations: lake reservoir fill, animal farm irrigation, back cooling, front glass cooling, dual cooling, front glass cleaning, Full feature system.