July 29 (SeeNews) - Bosnian hydro power producer Hidroelektrane na Trebisnjici [BANJ:HETR-R-A] said on Monday it turned to a net profit of 4.2 million marka ($2.9 million/2.1 million euro) in the first half of 2013 from a net loss of 9.6 million marka a year earlier.