Power Grid Corporation of India Ltd (PowerGrid) owns and operates a network of transmission lines. The company also offers operations and maintenance services for the inter-state transmission system, consultancy services, and telecommunication business ventures. It serves customers in the power and telecom sectors in India and abroad. PowerGrid operates its business through four segments: Transmission, Telecom, Consultancy, and Others. In FY2026, the company’s capital expenditure stood at INR372,791.4 million which was 88.8% of the company’s total revenue and grew 54.5% YoY.

Power Grid has undertaken a range of R&D initiatives aimed at advancing technology in power transmission systems. These initiatives include the indigenous development of a 765kV Emergency Restoration System, installation of insulated cross arms for 400kV transmission lines, and the establishment of an Indigenous Integrated Information Security Operations Centre. The company has also deployed STATCOMs at strategic locations to enhance grid stability, utilized advanced survey techniques and LiDAR technology for optimal route planning, and commissioned Asia's first synthetic ester-filled 400kV transformer. Additionally, the company has developed aesthetic poles for urban areas, innovative foundation systems for mountainous regions, and super-hydrophobic coatings for power insulators. Other initiatives include the development of heavy lift drones, an Unmanned Ground Vehicle for HVDC inspections, mobile GIS bays, and portable high voltage test kits. The company is also exploring SF6 alternatives, installing bird diverters, implementing Asset Performance Management systems, and collaborating with ISRO for a Spatial Decision Support System. The R&D unit of Power Grid is responsible for managing the company's research and development activities, focusing on the development and implementation of new technologies and solutions to enhance the efficiency, reliability, and sustainability of power transmission systems. The company has entered into a Master Agreement with the Electric Power Research Institute, USA, for collaborative technical research internationally. Additionally, the company is part of international and national bodies like CIGRE, IEC, IEEE, and BIS for various technologies, contributing significantly to standardization efforts. In FY2026, the company spent INR3,211.9 million on its R&D activities, which as a percentage of revenue stood at 0.8% and grew 3% YoY.