“…Due to complex load models used in various studies, it is necessary to use sophisticated methods of econometric estimation to determine the price elasticity of demand. In [17], the OLS (Ordinary Least Squares) method is used, in [19,20], the LSDV (Least Squares Dummy Variable) and LSDVC (Least Squares Dummy Variable Corrected) approaches are used, in [42], the methods of robust statistics (robust regression) is adopted, [33] proposes two specifications: FE (Fixed Effects) and RE (Random Effects) models, while in [16] the author confronts the OLS, FE, and LSDVC methods. In addition, the improved AIC (Akaike's Information Criterion) can be used to find the most appropriate specifications in the load models under consideration [52].…”