Udangudi Thermal Plant Trial Run Signals Readiness for March Commissioning

Udangudi thermal power project has entered a crucial phase as trial operations have begun at its first generating unit, marking a significant step toward full-scale power production. Located in Thoothukudi district, the project is expected to strengthen Tamil Nadu’s power supply once commissioned. Officials indicate that the first unit of the plant is likely to be operational by March, following successful preliminary testing.

The Udangudi thermal plant is a supercritical power project developed by Bharat Heavy Electricals Limited for Tamil Nadu Power Generation and Distribution Corporation. The project consists of two units, each with a capacity of 660 megawatts, making it one of the key additions to the state’s thermal power infrastructure. Construction began in 2019 with an estimated cost of over Rs 13,000 crore, aimed at meeting the state’s growing electricity demand.

During the recent trial phase, officials conducted coordinated testing of multiple systems involved in power generation at Unit 1. The process focused on checking boiler performance, turbine response, grid synchronization, and overall operational stability. As part of the trial, coal was supplied from the nearby Thoothukudi Thermal Power Station to ensure uninterrupted testing of the coal handling and crushing systems.

Udangudi thermal operations tested through grid synchronisation

A key highlight of the trial run was the lighting up of the boiler at Unit 1 after obtaining necessary approvals from power grid authorities. The unit was successfully synchronised with the Southern Region power grid, allowing electricity generated at the plant to be transmitted for the first time. During the testing window, power generation was maintained at moderate levels to assess system stability and response.

Officials stated that the unit generated power steadily, reaching a peak output during the trial. After completing scheduled checks, the unit was temporarily shut down and is expected to resume operations after fine-tuning based on trial observations. Engineers are currently reviewing performance data to address minor issues identified during the testing stage.

Coal supply has been a critical component of the trial operations. More than 10,000 tonnes of coal were transported by road from the Thoothukudi Thermal Power Station’s coal jetty to the Udangudi plant’s coal crushing unit. This arrangement is temporary, as the project includes an offshore coal jetty designed to supply fuel directly to the plant through a conveyor system.

Udangudi thermal infrastructure awaits jetty readiness

The offshore coal jetty, located several kilometres off the coast near Kallamozhi, is intended to streamline coal supply once operational. However, officials confirmed that the jetty is still awaiting final operational clearances and certifications. Until then, coal movement by road will continue to support trial and early operational needs.

While Unit 1 is nearing completion, work on Unit 2 is progressing at a steady pace. Turbine-related works are still pending for the second unit, although major construction activities such as boilers, cooling towers, and auxiliary systems have already been completed. Officials expect Unit 2 to be ready for commissioning by May, subject to successful completion of remaining works.

The Udangudi thermal plant plays an important role in Tamil Nadu’s long-term energy planning. Supercritical technology used in the project is designed to improve efficiency and reduce coal consumption compared to older thermal plants. Once both units are operational, the plant is expected to contribute significantly to base-load power generation in the region. Also Read: Tribal Dept to Team Up With Global Chess Body to Reshape Learning in Schools in 2026

Conclusion

Udangudi thermal power project is steadily moving toward commissioning, with trial operations at Unit 1 marking a major milestone. As final adjustments continue and infrastructure gaps are addressed, the plant is expected to begin commercial operations in phases, strengthening Tamil Nadu’s power supply in the coming months.