There is a growing worldwide interest in the potential of using existing buildings to generate their own energy as a way to alleviate problems related to the exhaustion of energy resources, environmental degradation and the constant increase in energy-related prices. Among the distributed electricity generation solutions on the market today, wind energy can be a solution for many existing city buildings worldwide. Thus, the objective of this article is to investigate the economic viability of generating wind energy in a multifamily building located in Southern Brazil, (city of Passo Fundo), seeking to supply the condominium electric energy for the period of one year of consumption with a renewable source. To this end, the energy demand of the condominium and the energy generation of the wind turbine were taken into account to calculate the economic viability of the system. The results showed a positive NPV (net present value) demonstrating the economic feasibility of carrying out such an investment. The IRR (internal rate of return) was 15.22% and the return on investment (payback) occurs in 7.88 years.

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