Ukraine's largest private energy company, DTEK, has inaugurated a major battery storage facility designed to bolster the country's electricity grid ahead of anticipated Russian attacks this winter. Developed in partnership with American firm Fluence Energy Inc., the system comprises 698 Gridstack batteries spread across six sites in Kyiv and Dnipropetrovsk oblasts.

The battery installations, ranging from 20 to 50 megawatts each, collectively form a 200-megawatt storage capacity. This is sufficient to power approximately 600,000 homes for two hours, reducing blackout risks and stabilizing the grid. This facility now holds the record as the largest battery storage system in Eastern Europe, surpassing a 124.1-megawatt project currently under construction in Bulgaria.

DTEK CEO Maksym Timchenko highlighted the system's role in enhancing energy resilience amid ongoing Russian strikes. The company invested 125 million euros ($146 million) in the project, completing it in just six months--a notable acceleration compared to typical timelines of 12 to 15 months. Commercial operations are set to begin on October 1.

Since the start of the war, DTEK has faced significant damage, with nearly 90% of its thermal plants and thousands of power facilities hit by Russian attacks. The company has invested heavily in restoration and renewable energy, including a 450 million euro expansion of a wind farm in Mykolaiv oblast.

This battery project symbolizes a strengthening Ukrainian-American energy partnership and a step towards securing the nation's energy future amid conflict.