| Summary: | ABSTRACT The increasing demand for electricity and the scarcity of resources, require renewable energy sources and efficient equipment that reduce the consumption of electricity. The Green Office (GO) of the Universidade Tecnológica Federal do Paraná (UTFPR) is a sustainable building that uses strategies to reduce impacts to the environment, one of them being the use of the grid connected photovoltaic system (on-grid). The on-grid was installed in 2011 and since then has been feeding the GO and another building (block V) belonging to UTFPR. This article presents a comparison between an estimate of energy consumption and the generation of energy through the on-grid. By means of the estimated consumption, a survey in loco of the scenario of expenditures of the electrical equipment used in the GO was made, estimating hours of use and power, so the consumption scenario was 145 kWh/month. The power generation of the EV is lower in the months May - July, period in which the solar irradiation is smaller, but according to the measurements the on-grid produces more energy than it consumes.
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