Design of a Photovoltaic System as an Alternative Source of Electrical Energy for Powering the Lighting Circuits for Premises in Ghana

Abstract

This paper seeks to emphasise the tendency of the use of solar energy as an alternative source of energy for today as far as the lighting needs of a particular infrastructure is concerned. It compares the use of a Photovoltaic (PV) System and an existing 60 kVA generator that powers a premise. The paper provides a general understanding of a solar energy (renewable energy) and how photovoltaic technology can be practically applied to power the lighting needs of the premise. Analysis of the site, weather data, and the design predicted the value of the photovoltaic system as an economic investment. We present the analysis undertaken using the PVSYST software package to optimize the system design for the premise. The simulation and calculation was done with the consideration of a PV array's tilt and direction and economic considerations. The proposed photovoltaic system for the premise, with 30 units of battery capacity of 17850 Ah, an inverter size of 132 kW and a minimum number of 8 modules at 12.53 kWp was sufficient for the proposed design. The output analysis when implemented will result in a substantial lifetime energy savings, improving reliability and provide a great impact on the environment. It is therefore worthwhile to invest in photovoltaic renewable energy systems to augment the energy needs of locations where its use is viable.