Estudio de un sistema de energía renovable fotovoltaico para la Facultad de Arquitectura de la Universidad Católica de Santiago de Guayaquil.

Abstract

The Faculty of Architecture at the Universidad Católica de Santiago de Guayaquil relies heavily on the conventional power grid and lacks a backup system to ensure the continuity of academic activities during grid outages. To address this need, the study proposes a grid-tied photovoltaic system with hybrid backup for critical loads. The methodology involved surveying the electrical infrastructure, characterizing energy demand, assessing solar resources, sizing the array, and conducting a technical-economic analysis. The proposal entails installing 318 modules (600 Wp each, totaling 190.8 kWp) across a 1,088 m² slab, arranged in 15 rows. The mounting system requires—in net quantities—60 end clamps, 606 mid-clamps, 30 grounding connectors, 666 L-brackets, 150 aluminum rails (6 m), and 120 rail connectors. Critical load backup is provided by a 10 kW hybrid inverter and sixteen 12 V, 200 Ah gel batteries. Analytical calculations estimate an annual energy production of 260,740 kWh. With an initial investment of USD 126,989.36, the system would generate estimated gross savings of USD 24,770.27 in the first year, achieving a payback period of 5.89 years, a net present value of USD 63,669.69, and an internal rate of return of 16.37%. The results indicate that the proposal is technically and economically viable at a preliminary stage; however, implementation requires validating the structural design, inverter configuration, energy generation estimates, and final costs through detailed studies and updated price quotes.