power grid corporation of india limited a maharatna cpse of ministry of power has ranked first in the services sector in the public enterprises survey 202122 by department of public enterprises dpe ministry of finance the psu has ranked first across categories like gross block value addition net profit net worth dividend declaration and contribution to central excheque power grid corporation of india has also been ranked third amongst the top ten profit making central public sector enterprises in the survey the public enterprises survey is a unique data repository to measure the progress and contribution of the cpses to the economythe total transmission assets of powergrid and its subsidiaries as on december 31 2022 include 173791 circuit km of transmission lines 270 substations and transformation capacity of 493043 mva with the use of stateoftheart maintenance techniques automation and digitization powergrid has maintained transmission system availability more than 99