Own-consumption PV system for a coffee shop

Abstract

Solar energy is becoming popular for building integrated applications. Based on this, the idea of my thesis is to design of an own-consumption photovoltaic system for a coffee shop located in Valladolid, Spain. Grid connected photovoltaic system is simulated using the PVsyst V6.62 software. There will be a comparison among numerous of simulations to find the most ideal power for the coffee shop and the optimal tilt for the PV modules in order to bring back the maximum savings for the owner. In summary, the coffee shop consumes approximately 99116 kWh per year. The user’s need is covered by both the PV system and the grid. In one year, the PV system will generate 57.7 MWh, including 45.3 MWh is supplied to the user and 12.3 MWh is the excess energy will be injected to the grid. The lack of energy is taken from the grid with 53.8 MWh. The PV system comprises 96 PV modules, together with one triphased inverter connected to a grid. Performance ratio of the system is about 87.07% due to several losses from irradiation, PV modules, inverter, wirings, etc. The economical evaluation, the pros and cons when using the own-consumption photovoltaic system is also suggested in this study.