The Severnoye Production Department of Chuvashenergo, a branch of IDGC of Volga, PJSC (a member of Rosseti Group), completed the scheduled overhaul of 110 kV Sundyr 1,2 power transmission line. The length of the repaired section is 58.2 km. The repair works included straightening of reinforced concrete supports, replacement of faulty insulators, restoration of fixed dispatch signs, installation of bird guards and removal of trees and scrubs at 6.3 ha right-of-way area. During the first six months of 2015, Chuvashenergo completed repair works at twelve 35-110 kV overhead power lines (over 115.9 km). This amounts to 100% of the target scope of work scheduled for this year. In 2015, Chuvashenergo, a branch of IDGC of Volga, PJSC, plans to repair 823.4 km of power transmission lines of all voltage classes and 351 transformer substations (10/6/0.4 kV) and to overhaul 24 substations (110/35/10/6 kV). The repair program also involves vegetation control measures covering 437.8 ha of rights-of-way. The repair operations will contribute to high operational reliability of the electric grid equipment, uninterrupted power supply to consumers residing in the Chuvash Republic, and will prevent any failures of electrical installations.