DTEK, together with the American company Fluence, has built a 200 MW energy storage facility (ESF), which is currently the largest such complex in Ukraine, the energy holding company reported.
“The DTEK Group has commissioned 200 MW of ESS facilities, created in partnership with the leading American company Fluence, a global leader in energy storage. The company has connected six new facilities of various capacities, ranging from 20 to 50 MW, to the power grid in the Kyiv and Dnipropetrovsk regions,” DTEK said in a press release on Thursday.
According to the release, DTEK’s investment in the construction of the complex, which lasted from March to August 2025, amounted to EUR125 million, and in total, the system will be able to store 400 MW*h of electricity, which is enough to supply 600,000 Ukrainian homes for two hours.
“In the context of massive attacks on the Ukrainian power system, the role of energy storage systems has become as fundamental as generation itself. The National Renewable Energy Action Plan until 2030, adopted by the government, clearly defines the need for such installations, and today we are seeing strategic goals being implemented. I am grateful to the DTEK Group for its proactivity in this matter and to our American partners at Fluence for their advanced technologies, thanks to which each new megawatt of storage acts as a shield for the entire power system. This means greater security for Ukrainians and fewer risks of emergency blackouts,” commented Ukrainian Energy Minister Svitlana Grinchuk.
DTEK CEO Maxim Timchenko called the launch of the UZE complex a historic step for the Ukrainian power grid, which will determine its development for years to come.
“We implemented it together with Fluence, a global leader in energy storage. In cooperation with our American partners, we are integrating the most advanced technologies to make Ukraine’s power system more reliable and resilient,” he said.
According to Fluence CEO Julian Nebreza, this is a joint contribution to creating a stronger, more resilient, and decentralized energy system that will ensure Ukraine’s long-term stability.
“We are honored to be working with DTEK on this landmark energy storage project. The extraordinary determination and efficiency that DTEK has demonstrated in implementing this project is truly inspiring. This achievement is a testament to resilience and a symbol of what can be achieved through close international cooperation. Even in these extremely challenging times, innovation and partnership can pave the way to greater energy security,” Nebreda emphasized.
As reported, DTEK and Fluence announced their intention to implement a project for modern energy storage systems (ESS, energy storage, energy storage facilities) in Ukraine with a capacity of 200 MW and a cost of EUR140 million in January 2025. It involved six energy storage facilities.
In June 2025, the DTEK energy holding received a EUR67 million loan from a consortium of Ukrainian banks consisting of Oschadbank, PUMB, and Ukrgasbank (UGB) for the construction of an 180 MW ESS.
At the time, the energy holding company noted that this was the first loan of this scale in Ukraine for the development of energy storage technologies, and the project itself was one of the largest in Eastern Europe.
DTEK won a special auction held by NPC Ukrenergo for the provision of automatic frequency restoration reserve (AFRR) services with 140 MW of UZE. Under the terms of the auction, NEC will purchase these services at the auction price for five years, starting October 1, 2025.
Fluence, headquartered in Washington, was founded in 2018 by Siemens and AES Corporation. The company has built approximately 35 GWh of energy storage capacity and approximately 30 GW of renewable energy sources.
Fluence has significant experience in integrating energy storage facilities into national energy infrastructures, with a portfolio of energy storage projects with a capacity of 201 MW in Lithuania and 450 MW in Germany.
DTEK was established in 2005 to manage the energy assets of Rinat Akhmetov’s System Capital Management (SCM, Donetsk) group. The corporation has been delegated the functions of strategic management of the group’s enterprises, which have formed a vertically integrated chain of coal mining and enrichment, electricity production and sales.
