A utilização de sistema solar fotovoltaico em edificações históricas: a antiga Secretaria de Estado da Fazenda de Minas Gerais, em Belo Horizonte/MG

Abstract

The COP 27 performed in Egypt, in November 2022, showed a considerable increase in world electricity consumption, which alerts us once again to the need to think about and promote actions that expand the generation of electricity from renewable sources, since they present themselves as a favorable alternative for the reduction of greenhouse gas emissions in the scenario of climate change. At the same time, studies on energy efficiency in the context of historic buildings and how they can contribute to this process have been expanded. In view of this, this study aims to investigate the possibilities of using photovoltaic solar systems in historic buildings, ensuring the preservation of the buildings attributes and promoting the self-generation of electricity through renewable sources. For this, a methodology with a qualitative approach was used, which involved a bibliographic and documental review about the themes involved, elucidating the main concepts about sustainability, energy efficiency and cultural heritage; and quantitative data, based on information and surveys about the building studied. The building selected for the study was the former Minas Gerais Treasury Department, which currently houses the Memorial Minas Gerais Vale, in Belo Horizonte/MG, from which the shading analysis of the building and the pre-dimensioning of a photovoltaic solar system were carried out on grid. The results achieved allowed us to identify the potential for energy savings from the installation of the photovoltaic solar system in historic buildings, ensuring the preservation of their attributes, as well as the participation in the reduction of greenhouse gas emissions.