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BYD, Greenvolt to develop Poland energy storage project

  • Market: Battery materials, Electricity, Metals
  • 02/07/26

China's largest electric vehicle producer and major battery manufacturer BYD has signed an agreement with Poland-based renewable energy developer Greenvolt Power to jointly develop the Siedlce battery energy storage project in Poland, further expanding BYD's presence in the European energy storage market.

The project will have a storage capacity of 600MW/2.4GWh and is expected to become Poland's largest battery energy storage facility once completed. Construction is scheduled to begin in the third quarter of 2026, with commercial operations targeted by the end of 2027.

BYD will supply its Haohan energy storage system for the project. The system uses the company's 2,710Ah Blade battery, which BYD describes as the world's largest battery cell designed specifically for energy storage applications. The system has a unit capacity of 14.5MWh and can deliver 10MWh of storage capacity within a standard 20-foot container configuration.

The agreement marks the latest collaboration between BYD Energy Storage and Greenvolt Power in Poland. The two companies have previously partnered on two energy storage projects in the country, with a combined capacity of 1.6GWh.

The project underscores growing investment in large-scale battery energy storage across Europe as developers seek greater grid flexibility and support for expanding renewable power generation.

Chinese battery companies are accelerating expansion into overseas energy storage markets through partnerships with international firms, supported by rapidly growing global demand for energy storage.

Rapid growth in global energy storage deployment is expected to support long-term lithium demand, as lithium iron phosphate (LFP) batteries currently account for more than 90pc of new storage installations. Argus-assessed lithium-iron-phosphate (LFP) stood at 55-61 yuan/kg ($8.09-8.90/kg) ex-works on 24 June, up from Yn59-64/kg on 17 June.


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