Power Grid Corporation of India Limited | 117,810 followers on LinkedIn. Power Grid Corporation of India Limited (POWERGRID), is a 'Maharatna'​ Company operating under Ministry of Power, is engaged in power transmission business. POWERGRID is a listed Company, with 57.90% holding of Government of India and balance by Institutional Investors & public. Power Grid Corporation of India limited (POWERGRID) was incorporated on October 23, 1989.