RAO UES of Russia was established in 1992. Unified Energy System is the largest power holding in Russian Federation, that generates 69.4% (635.8 billion kWh) of general electricity output, 32.4% (468,8 million Gcal) of general heat production; capacity of which makes up 72.4% (156.6 TMW) of the installed capacity in Russia. The company owns 96.1% of high-voltage grids (2,496.9 Tkm) and 77% of distribution network (1,747.416 Tkm) in Russia. It employs 577.6 thousand of people. UES is a holding company that owns controlling stakes (49%-100%) in 73 regional vertically integrated energy companies and 44 Federal power plants (of which 8 are under construction), 100% in OAO "FGC" (OAO "Federal Grid Company") and 100% in OAO "SO-CDA" (OAO "System Operator - Centralized Dispatching Administration").