Design Of An Off Grid Photovoltaic System A Case Study Of Government Technical College Wudil Kano State

Abstract Off-grid stand-alone photovoltaic PV systems have become widely adopted as reliable option of electrical energy generation. In this paper the electrical energy demand load of the Government Technical College GTC Wudil Kano was estimated based on watt-hour energy demands. The estimated load is 48.787 kWh day. An off grid PV system was designed based on the estimated load. Based on the equipment selected for the design 72 PV modules 20 batteries a voltage regulators and an inverter will be required to supply the electrical energy demand of the college. The proposed off-grid PV system requires copper wires of cross-sectional areas 1.22 mm2 32 mm2and 3 mm2 for its installation. The cost estimate of the system N2 124 972 is relatively high when compared to that of fossil fuel generator used by the college. The payback period of the system is estimated to be 2.8 years which is obviously much shorter than the lifespan of the selected PV modules which is 30 years.