Design and Economic Analysis of a 74.1kW Grid connected Rooftop Solar PV Power system

Abstract

The design and modeling of a commercial rooftop solar power system are essential for effective project planning and 
execution. Various factors must be carefully evaluated before implementation to ensure optimal performance and cost efficiency. This 
paper presents the design, modeling, and cost-benefit analysis of a 74.1 kW grid-connected rooftop solar power plant. It includes a 
detailed assessment of electricity generation and a two-year billing history, simulated using PVsyst software. The performance ratio 
(PR) of the photovoltaic (PV) system is analyzed, and validated results from the actual project execution are presented. Key aspects 
such as material costs, installation costs, energy output, and electricity savings are examined. This research serves as a valuable 
resource for designing and optimizing rooftop solar PV systems.