Large-scale Energy Storage Complex in Uzbekistan Nears Full-capacity Grid Connection

Four energy storage stations built by China Energy Engineering Corporation have successfully completed power transmission tests in Uzbekistan, marking a critical step toward full-capacity grid integration. The project cluster covers four sites located in Tashkent, Namangan and Andijan regions, forming a comprehensive new energy regulation complex with a total installed capacity of 400MW/800MWh.

According to international industry news reports, the whole project involves Aken, Obi, Chiz and Gatan energy storage plants. Each facility is equipped with a 100MW/200MWh lithium iron phosphate electrochemical energy storage system. Supporting infrastructure includes one 220kV step-up substation for each station, with power exported to the local grid through single-circuit 220kV transmission lines. The total investment of the project cluster reaches approximately 320 million US dollars.

Designed as a key initiative under Uzbekistan’s 2030 National Development Strategy, the project focuses on improving the flexibility and stability of the national power grid. Upon official commercial operation, the complex will deliver 580 million kilowatt-hours of power regulation capacity annually, effectively balancing peak and off-peak power demand and optimising local power dispatch efficiency.

Lithium iron phosphate energy storage technology adopted in the project features high operational safety and stable cycling performance, which suits the long-term stable operation requirements of Central Asian power systems. The four stations are distributed in core load-intensive areas, enabling rapid response to local power fluctuations and reinforcing grid reliability during peak consumption periods.

The completion of power transmission tests validates the stability of on-site equipment and overall system compatibility. Subsequent commissioning and fine-tuning procedures will steadily advance to prepare for formal grid connection and commercial operation. The project will further support Uzbekistan’s energy structure upgrading and low-carbon transformation, consolidating regional clean energy development foundations in Central Asia.