CATL and the Eastern European company Solarpro have signed a strategic agreement for the supply of sodium-ion battery energy storage systems with a total capacity of 2 GWh. According to the companies, the systems will be deployed in projects across Central and Eastern Europe. The goal is to develop the region’s first large-scale sodium-ion energy storage project and evaluate the technology under local grid and climate conditions.
The agreement builds on an existing partnership. In May 2026, CATL and Solarpro commissioned a 602 MWh battery energy storage project in Bulgaria. According to the companies, the project increased the country’s total energy storage capacity by 10%.
Focus on Operation in Cold Climates
According to CATL, the sodium-ion energy storage systems are particularly suited for regions with low temperatures. The company also cites long cycle life as another advantage of the technology. Together with Solarpro, CATL plans to develop storage solutions tailored to the requirements of power grids and climate conditions across Central and Eastern Europe.
According to the companies, Solarpro will be responsible for project development, system integration, and the long-term operation and maintenance of the installations. CATL says the partnership is also intended to provide insights into regional market requirements and identify additional applications for sodium-ion battery technology.
With the agreement, CATL continues the expansion of its sodium-ion technology in Europe. It marks the company’s second order for this energy storage technology in Europe within a short period.
Sources:
https://www.catl.com/en/news/6916.html
https://cnevpost.com/2026/07/21/catl-sodium-battery-storage-deal-solarpro/
