The Unified Energy System was an electric power holding company in Russia. It controlled about 70% of Russia's installed electric capacity 96% of its high-voltage grid and over 70% of its transmission lines. In addition to the Russian market RAO UES exported electricity to Scandinavia and to other members of the CIS. The last head of RAO UES was Anatoly Chubais.
RAO UES is the predecessor of the FGC UES.
Key people are Anatoly Chubais and Chairman of the Management Board.