Lenenergo proposed restoring and partially reconstructing the Volkhov 110 kV and 35 kV power lines in the winter of 1942 and laying a 10 kV four-wire cable on the bottom of Lake Ladoga. Stretching for more than 100 km, the cable was assembled by hand. This unique technical solution helped to break the power blockade in September, 1942, helping Leningrad to survive the blockade.