Fluence to supply 400 MWh of battery storage to Ukraine’s DTEK

Ukrainian energy company DTEK has announced plans to install 200 MW/400 MWh of utility-scale batteries in the war-torn nation before winter 2025.
The Fluence energy storage business owned by German giant Siemens and US-based utility AES has been selected to supply BESS ranging in scale from 20 MW/40 MWh to 50 MW/100 MWh to six sites in Ukraine.
Announcing the deal, Fluence said the sites would be operational by October 2025 and would provide enough electricity to power 600,000 Ukrainian homes – around half the population of capital city Kyev.
DTEK will invest EUR 140 million ($143 million) in the two-hour BESS, which will provide grid frequency and balancing services to Ukrainian electricity network operator Ukrenergo.
DTEK chief executive Maxim Timchenko said: “Battery storage is a critical element in Ukraine’s vision to build a decentralized energy system that reduces our emissions and enhances our energy security. The partnership with Fluence further signals our commitment to leading the way in battery storage, both in Ukraine and across Europe. Together, we will deliver state-of-the-art technology that will strengthen Ukraine’s energy infrastructure.”
Following delivery, DTEK and Fluence teams will oversee the systems’ installation, configuration, network integration and testing to ensure readiness to support Ukraine’s energy needs. DTEK staff will be trained by Fluence to act as certified partners for the on-site installation, commissioning, and future maintenance activities of the battery energy storage systems.