Through the first part of the paper, the theoretical foundations of reactive power are given and the basic problems of integrating capacitor batteries into the system are highlighted. The advantages and disadvantages of using capacitor batteries and the techno-economic benefits of compensation are explained. Before the practical part, an overview of the advantages and problems of using genetic algorithms is given. After the aforementioned theoretical considerations, the parameterization calculation of the genetic algorithm was performed, where various influences of the parameters on the quality of the solution and the speed of convergence can be seen. Then, the calculation of the installation of capacitor batteries in the network was performed using a genetic algorithm using a standard example of a network with 69 buses, and the results of power flows and voltage conditions before and after the installation of capacitor batteries in the network were compared.