Techno-Economical Efficiency Comparison between the South-Oriented System and East-West Configuration System with a Case Study for a University

The study investigates and compares South-Oriented and East-West photo-voltaic configurations on a 1275 m² rooftop at SRH Berlin University using 3D modeling and simulation tools. The East-West system produces 6% more electricity (3020.220 kWh), provides better space utilization, and had a faster payback period (6.49 years), while the South-Oriented system shows a lower levelized cost of electricity (0.0684 € per kilowatt-hour), a higher internal rate of return (23.09%), and a net present value of 73.804,75 €. The structural analysis through ANSYS confirms minimal deformation, ensuring safety. Compared to traditional setups, these configurations significantly enhance energy production and financial efficiency, highlighting the East-West orientation’s suitability for maximizing self-consumption in institutional environments.