Economic viability analysis of the use of a pump operating as a turbine operating at variable frequency as an alternative to generate electricity compared to rural electrification in the state of Minas Gerais. RSD [Internet]. 2018 Jan. 30 [cited 2025 Jun. 28];7(6):e176179. Available from: https://ojs34.rsdjournal.org/index.php/rsd/article/view/271