HospEnergy: Ferramenta Computacional para Análise Técnico-Econômica de Sistemas Fotovoltaicos com Armazenamento de Energia e Geradores a Diesel em Unidades de Saúde

Abstract

The need for high reliability in the energy supply of hospital facilities, combined with cost reduction and sustainability objectives, requires robust techno-economic assessment tools for hybrid systems composed of a Grid-Connected Photovoltaic System (GCPS), Diesel Generator Set (DGS), and Battery Energy Storage System (BESS). In this context, this work presents the web-based platform HospEnergy, developed for the integrated analysis of these systems in hospitals, considering critical loads, stochastic modeling of grid outages, tariff structures for Groups A and B, and Law 14,300/2022. Through an interactive interface and remote access, the platform enables the simulation of different operational and financial scenarios, integrating the hourly energy balance among the GCPS, DGS, BESS, and the utility grid with an economic evaluation based on Net Present Value (NPV), Modified Internal Rate of Return (MIRR), and discounted Payback, including financing options. The application to a case study in a medium-sized hospital demonstrated economic feasibility in all evaluated scenarios, with positive NPV, MIRR above the minimum attractiveness rate, and reduced discounted Payback, in addition to eliminating unmet energy through the use of BESS and reducing costs via the strategic dispatch of the DGS during peak periods. Therefore, HospEnergy constitutes a decision-support tool for hospital energy planning, offering accessibility, flexibility, and practical applicability.