An operator works at the control room of the newly-opened thermal power plant near Galabovo, some 250 km (155 miles) east of the Bulgarian capital Sofia June 3, 2011. U.S. energy company AES Corp said on Friday it had launched a 1.2 billion euro ($1.73 billion) thermal power plant with a net capacity of 600 megawatts in Bulgaria. REUTERS/Stoyan Nenov (BULGARIA - Tags: ENERGY BUSINESS EMPLOYMENT SCI TECH)