Jyoti Structures Completes 513th Transmission Tower Prototype Test for Power Grid Corporation of India Limited 800 kV HVDC Programme

Jyoti Structures (JSL), an Engineering, Procurement and Construction (EPC) company focused on power transmission, has successfully completed full-scale prototype testing of its 513th tower at its Tower Testing Station in Ghoti, Nashik, Maharashtra. The test was conducted for Power Grid Corporation of India (PGCIL) as part of the 800 kV HVDC transmission programme.

The tower tested was an 800 kV HVDC Type ‘C’ tower (15-30 degree angle, Wind Zone-4), configured as a Basic Body Tower with +0M extension, weighing 45.5 metric tonnes. Testing was carried out as per IS 802 Part III: 1978 (RA):2017 standards and included multiple load conditions covering normal operation, safety and maintenance scenarios, broken wire situations and different reliability conditions.

The tower withstood 100 percent of the required loads across all specified test cases without any visible deformation and was declared successfully tested as per the applicable standard. During the testing process, certain members in the Bottom X-Arm were strengthened to refine the design. After completing all required load cases, a destruction test was also conducted. The tower sustained loads up to 110 percent before collapse, further validating the robustness of the structural design.

Commenting on the development, Rajesh Kumar Singh, CEO, Jyoti Structures, said, “Successfully testing the 513th tower at our Tower Testing Station reflects the engineering strength and execution capability we have built over the years. The 800 kV HVDC programme is among the most demanding transmission projects in the country. While the tower design was provided by PGCIL, our team carried out the detailed development, manufacturing and rigorous load testing to validate performance under real-world conditions. As transmission projects continue to scale in voltage and complexity, our in-house testing infrastructure and structured approach enable us to ensure reliability, maintain quality standards and reduce execution risks for our clients.”

This milestone supports the company’s ongoing execution of the 800 kV HVDC project awarded by Power Grid Corporation of India, valued at approximately INR 741 crore including GST. The Ghoti Tower Testing Station, part of JSL’s dedicated R&D and testing infrastructure in Maharashtra, plays a central role in ensuring that towers meet design specifications before field deployment, reducing execution risk across the transmission network.