Regression model in the operation of wind turbines Sylwester Borowski, Klaudiusz Migawa, Agnieszka Sołtysiak, Andrzej Neubauer and Anna Mazurkiewicz MATEC Web Conf., 351 (2021) 01021 Published online: 06 December 2021 DOI: 10.1051/matecconf/202135101021