Application of energy efficiency in lighting system retrofit project

Abstract

Buildings represent 50% of Brazil's electricity consumption. The study proposes the retrofitting of the lighting system for a public building, aiming to demonstrate the effectiveness of this type of project that incorporates energy efficiency measures for reducing energy consumption, especially in the context of a retrofit. Through a robust methodological approach, which includes on-site data collection, computer simulation, and labeling of the lighting system using INI-C, it was possible to accurately assess the impact of these interventions on reducing system consumption. Ultimately, the implementation proved effective, as the consumption reduction was 68.15%, a percentage higher than the 30% associated with newly constructed buildings, according to literature. A financial viability calculation was performed, showing the economic feasibility of the project, with a payback period of 1.28 years. These results have the potential to provide valuable insights for professionals in the field, as well as for policymakers to make decisions, as they demonstrate with tangible data the consumption reduction of projects that combine retrofitting and energy efficiency.