As Ukraine heads into its fourth winter amid the ongoing war with Russia, the country’s Ministry of Energy has unveiled a powerful new asset—a $140 million battery program completed in August. According to an exclusive report by The Wall Street Journal, the program includes at least six large-scale battery and energy storage systems located at undisclosed sites across the Kyiv and Dnipropetrovsk oblasts in central Ukraine.

Developed and produced in the United States, the batteries are part of a project led by DTEK, Ukraine’s largest private energy provider. Each facility has a combined capacity of 200 megawatts—enough to power approximately 600,000 homes for two hours, roughly equivalent to supplying a city the size of Washington, D.C.

These battery parks are designed to stabilize and reinforce Ukraine’s energy grid, providing a backup source of electricity when traditional systems are damaged or offline. By automatically connecting to the grid and compensating for disruptions—such as the loss of a thermal power plant—they help prevent the rolling blackouts that have plagued Ukraine since Russia’s invasion began in 2022.