László Balázs has been appointed to serve as the CEO of HUPX, the company that operates the Hungarian power exchange, beginning in March, Hungarian power transmission-system operator Mavir told MTI on Tuesday. Balázs will succeed Zoltán Medveczki, who has been CEO of HUPX since the company was established in 2010. Balázs served as the president-CEO of Volksbank Magyarország for more than ten years, Mavir noted.