NextFin news, On Thursday, September 11, 2025, DTEK Group, Ukraine's largest private energy company, launched the country's largest battery energy storage system (BESS) with a total capacity of 200 MW. The project, developed in partnership with American energy storage leader Fluence, includes six battery installations ranging from 20 to 50 MW each, connected to the power grid in the Kyiv and Dnipropetrovsk regions.
The energy storage system can store up to 400 MWh of electricity, sufficient to supply power to approximately 600,000 Ukrainian homes for two hours. This development aims to improve the security and reliability of electricity supply, reduce risks of outages and accidents, especially amid ongoing challenges to maneuverable generation facilities due to the war.
Construction of the facilities took place from March to August 2025, completing in under six months—significantly faster than typical timelines for projects of this scale. The accelerated schedule was driven by the urgent need to have the systems operational before the autumn-winter period.
DTEK invested a total of 125 million euros in the project. The equipment was supplied by Fluence, which also provided remote commissioning services due to restricted access caused by the conflict. Twenty Ukrainian engineers received advanced training at Fluence sites in Germany and Finland to support installation and commissioning.
Maxim Timchenko, CEO of DTEK, stated, "This is a historic step for the Ukrainian energy system and will shape its development for years to come. We have implemented it together with Fluence, a global leader in energy storage. In cooperation with our American partners, we are integrating the latest technologies to make Ukraine's energy system more reliable and sustainable."
Energy Minister Svitlana Grinchuk emphasized the importance of energy storage amid the war, saying, "The role of energy storage systems has become just as fundamental as energy generation itself. Thanks to DTEK's proactive approach and Fluence's advanced technologies, each new megawatt of storage acts as a shield for the entire energy system, providing more security for Ukrainians and reducing the risk of emergency outages."
The new storage systems will provide ancillary services to Ukraine's transmission system operator Ukrenergo, enhancing grid stability and supporting the development of renewable energy and decentralization of the power system.
Fluence CEO Julian Nebreda commented, "We are honored to collaborate with DTEK on this landmark energy storage project. The exceptional determination and effectiveness demonstrated by DTEK in bringing this forward is truly inspiring. This achievement is a beacon of resilience and a symbol of what can be achieved through strong international cooperation."
This project is part of DTEK's broader plan to deploy up to 500 MW of battery energy storage systems in Ukraine, contributing to the country's energy security and transition to sustainable energy sources.
Explore more exclusive insights at nextfin.ai.
