This work presents the contribution of solar photovoltaic generation as a renewable source in the methodology for obtaining Level A Label in Energy Efficiency certification and for the transformation into a Zero Energy Building, being applicable to buildings and public teaching laboratories. The methodology step-by-step essentially consists of two stages: the first, through an energetic diagnosis of the building analyzed, following the guidelines established in the Technical Regulation on Quality in Commercial, Service and Public Buildings - RTQ-C (in portuguese), resulting in a proposal of energetic, financial and environmental improvement processed with the aid of the RETScreen® software; and the second, dimensioning a photovoltaic solar generation system, based on local measurement data and the Meteonorm® software, as a bonus for obtaining the Level A Label of the RTQ-C levels and with energy production capacity that makes the energetic balance of the building as positive, making it a Zero Energy Building. In order to contextualize the relevance of the work and update the reader in the state of the art applicable to the methodology, a bibliographic review is presented, directed to the benefits of Energy Efficiency in public buildings and to the RTQ-C; to the current scenario, application and contribution of Solar Photovoltaic Energy in sustainable development, in obtaining nationally and internationally recognized classifications for public buildings; and the concepts currently used by the academic community to characterize Zero Energy Buildings. The bibliographic review and methodology were applied in a case study of the Laboratory of Electrical and Computer Engineering – LEEC (in portuguese), located at the Campus Guamá of the Federal University of Pará, with presentation of the energetic, financial and environmental results, showing that it is a solution to be applied in public institutions and buildings that have available space and similar infrastructure to that of the LEEC.
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