Energy Yield of a 1.3 kWp Grid-Connected Photovoltaic System Design: Case for a Small House in Bali

Abstract

This paper aims to obtain the energy yield performances of a 1.3 kWp grid-connected solar photovoltaic system design for a small house building in Bali with an average electrical consumption of 6.36 kWh/day by using PVSyst simulation software. The house location is under a tropical climate with 27.2 ℃ average monthly temperature. The average monthly horizontal solar irradiation varies from 4.41 to 7.14 kWh/m2. The photovoltaic panel position is optimized at 0⁰ azimuth and 12.5⁰ tilt angles, which arranged facing north with fixed tilted without any tracking. The proposed photovoltaic system composes of 4 poly-crystalline modules, each 325 Wp capacity connected in one string to establish maximum power point tracking in the inverter. One unit of the inverter of 1.6 kW is used to convert electrical power from DC to AC. The simulation results show that global incident irradiation and energy production at inverter output varies between 4.16 and 6.65 kWh/m2/day and 129.9-199.7 kWh. The monthly performance ratio, capacity factor, system efficiency is found to fluctuate between 76.9-78.6%, 17.3-27.7%, and 12.8-13.0%, respectively. The maximum of array capture and system losses of 1.35 kWh/kWp/day and 0.18 kWh/kWp/day occur in November with the lowest system efficiency, which is likely influenced by the high ambient temperature.

Keywords

• bali
• energy yield
• grid-connected
• pvsyst
• small house
• solar photovoltaic