EHV transmission in the Soviet Union

The total output of Soviet electric stations at the beginning of 1968 was 135 million kW; by 1970 it is expected to reach 180 million kW. There are ten interconnected power systems in the country. The European Power Grid unites six of the systems, with a total power output of 68.5 million kW and covering a territory of 6 million km2 with a population of 160 million. Plans for the period to 1980 call for the use of higher voltages; 1200 kV for ac and up to ± 1100 kV for dc transmission.