Análise da viabilidade técnica e económica entre os sistemas de geração fotovoltaica e gerador a diesel para emergência no novo escritório da Nyeleti Engenharia Lda em Mutanhane, Marracuene

Abstract

This study aims to assess the technical and economic feasibility of two emergency power generation systems for the new office of Nyeleti Engenharia Lda, located in Mutanhane, Marracuene district. The research compares a photovoltaic generation system with energy storage and a diesel generator, considering a 25-year operational horizon. The adopted methodology includes identifying the critical load of the facility, technical sizing of both systems, estimation of investment, operation and maintenance costs, and an analysis of environmental and social impacts. To support the qualitative assessment, surveys were conducted with users of diesel-based systems, who reported that the continuous noise of these generators negatively affects employee productivityThe technical analysis covers aspects such as reliability, maintenance requirements, component lifespan, ease of installation, and environmental impact. The economic evaluation considers cost-benefit analysis and total cost of ownership over the systems' lifecycle. The results indicate that the photovoltaic system is the most efficient, sustainable, and economically viable solution for the local context of Mutanhane. It provides a significant reduction in operational costs and environmental impact. The recommended solution not only enhances the company's energy performance but may also serve as a reference for similar projects in Mozambique.