The Oltenia Energy Complex (CEO) has brought online group 4 of the Rovinari thermal power plant, private manager Laurenţiu Ciurel stated at a press conference. The power group has undergone a technological upgrade. CEO now has at its disposal seven technologically upgraded power groups. The investment stands at approximately €150 mullion. According to CEO’s strategy, in the future the number 5 block of the Rovinari thermal power plant will undergo a similar process of rehabilitation.