The construction of the 500-kilovolt transmission line for the Huaneng Nantong (Tongzhou Bay) large-scale coal power project was completed on June 16. With this key infrastructure in place, the overall project has now entered the final phase of development.

Workers work on the power transmission lines. [Photo provided to en.nantong.gov.cn]

The project represents the first new peak-shaving power plant project in Jiangsu province, scheduled for completion in 2026. It includes the construction of a transmission line that spans a total length of 59 kilometers and features 141 new double-circuit towers.

During the construction phase, the team faced several challenges, such as complex terrain and multiple crossovers. They overcame these obstacles by using a ground-level double-arm derrick to complete the erection of a 125.3-meter-high tower.

Once operational, the power plant is expected to deliver nearly 10 billion kWh of electricity annually to the provincial grid, enhancing the grid's peak-shaving and frequency-regulating capabilities.

In parallel, Nantong is actively preparing for the upcoming summer peak electricity demand. As of now, Nantong has completed six projects aimed at addressing peak summer needs.

In addition, the city has over 1.19 million kW of new energy storage available for deployment and about 1.6 million kW of resources from virtual power plants, ensuring the safe and stable operation of the grid