COMPARISON OF SOLARIMETRIC DATABASES FOR PHOTOVOLTAIC ENERGY PLANNING IN SERGIPE

Abstract

This study performs a comparative analysis of solar irradiation data provided by the Brazilian Solar Energy Atlas and the Global Solar Atlas for the state of Sergipe. It was identified that the data provided by the databases present relevant differences in the solar irradiation estimate, in which the values of the Global Solar Atlas are systematically higher with an average difference of 1.8% in relation to the Brazilian Atlas. These variations can be attributed mainly to the different data collection and modeling methodologies, spatial resolution and analysis periods adopted by each database. These divergences have relevant practical implications for the technical and economic planning of photovoltaic systems, reinforcing the importance of local measurements to increase the reliability of solar projects. The study provides important subsidies for strategic decisions about solar energy in Sergipe, contributing to energy efficiency and local sustainability.

DOI: https://doi.org/10.56238/sevened2025.036-012