POWERGRID Power Grid Corporation of India Ltd Investments Divestments Announcement 2025 - Investment approval POWERGRID Board approves ₹1,226.93 crore refurbishment of Bhadrawati HVDC back-to-back system under 2024-29 tariff block; 36-month implementation timeline planned..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Power Grid Corporation of India Ltd