Sistema is a telecommunications and technology investment group based in Russia. Co. invests in, and manages a range of companies which operate in the telecommunications, oil and energy, high technology, banking and other sectors. The main focus of Co.'s activities is service-based industries. Co.'s operations are organized along four segments: Telecommunications, Technology and Industry, Consumer Assets and Oil and Energy. Through its subsidiaries, Co.'s activities include: wireless telecommunications services , IT and systems integration, cable TV, manufacturing of radiotechnical equipment, oil, gas and energy production, banking activities, trading and investing and financing activities.

E.ON Russia is engaged in the wholesale electricity market, it produces and sells electric and heat power. As of Dec. 31, 2012, the structure of Co. includes five heat power plants with the total installed capacity of 10,345 MW/2,125.9 Gcal/h: Surgutskaya GRES-2 (Khanty-Mansi Autonomous Area, Tyumen Region), Berezovskaya GRES (Krasnoyarsk Territory), Shaturskaya GRES (Moscow Region), Smolenskaya GRES (Smolensk Region) and Yaivinskaya GRES (Perm Territory).