July 18 (SeeNews) - Montenegro's state-controlled power transmission system operator Crnogorski Elektroprenosni Sistem (CGES) has launched a procurement for 400/110 kV, 300 MVA power transformers for a planned 36 million euro ($42 million) upgrade of the Brezna electrical substation in the country's north-west, the European Bank for Reconstruction and Development (EBRD) said.