In the search for new fuels capable of generating electrical energy in a sustainable and environmentally friendly way, this research used the yeast Galactomyces sp in low-cost, laboratoryscale microbial fuel cells to provide a new innovative solution . Microbial fuel cells were made of polyethylene with zinc and copp er electrodes as anode and cathode, respectively. Managing to generate peak values of current and voltage in open circuit of 4.23033 ± 0.3102 mA and 0.7522 ± 0.03573 V, with an optimal pH of 7.84772 ± 0.21744 and peak electrical conductivity of the substrate of 58.89078 ± 2.51661 mS/cm. Similarly, the power density displa yed was 4.749 ± 0.294 W/cm2 with a current density of 351.086 mA/cm 2. Finally, the microbial fuel cells were connected in series, generating 2.60 V and turning on a green led light. Giving in this way a new and promising use of this yeast to generate electricity

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