BANJA LUKA (Bosnia and Herzegovina), July 22 (SeeNews) – Bosnian power producer Hidroelektrane na Vrbasu (HEV) and local company Integral Inzinjering have signed a contract worth some 17 million marka ($9.5 million/8.7 million euro) for the construction of the 8.76 MW Bocac 2 hydro power plant (HPP) in the Serb Republic's municipality of Mrkonjic Grad, with works scheduled to begin by the end of July, the municipality's administration said.