
DTEK, Ukraine’s largest private energy company, has selected Fluence Energy B.V., a subsidiary of Fluence Energy, Inc. (NASDAQ: FLNC) (“Fluence”), a global market leader delivering intelligent energy storage, operational services, and asset optimization software, to supply Ukraine’s first large-scale battery-based energy storage portfolio. [pdf]
Sept. 10, 2025. (Bohdan Nazarenko/DTEK) Ukraine’s biggest private energy firm, DTEK, has launched a major battery storage facility that will bring power to hundreds of thousands of homes and strengthen the grid ahead of expected Russian attacks this winter, the company said.
The €140 million total investment aims to enhance power grid stability, bolstering Ukraine’s energy security and independence. The project will be the biggest operational energy storage portfolio in Eastern Europe at the time of commissioning.
Together, they will store up to 400 MWh of electricity – enough to supply two hours of power to 600,000 homes (equivalent to roughly half the households in Kyiv).
"Despite the war, we invest in Ukraine’s recovery and growth. Our energy sector, having withstood countless Russian attacks, now gains new momentum," owner of DTEK and Ukraine’s richest man, Rinat Akhmetov, said in a press release.
The batteries are spread out across six undisclosed locations in Ukraine, which helps de-risk the projects from Russian attacks compared to a centralized system, Julian Jansen, managing director covering southern and eastern Europe at Fluence, said during the briefing.
Dominic is the business reporter for the Kyiv Independent. He has written for a number of publications including the Financial Times, bne IntelliNews, Radio Free Europe/Liberty, Euronews and New Eastern Europe. Previously, Dominic worked with StopFake as a disinformation expert, debunking Russian fake news in Europe.

This article will introduce in detail how to design an energy storage cabinet device, and focus on how to integrate key components such as PCS (power conversion system), EMS (energy management system), lithium battery, BMS (battery management system), STS (static transfer switch), PCC (electrical connection control) and MPPT (maximum power point tracking) to ensure efficient, safe and reliable operation of the system. [pdf]

The emergence of the 5MW supercapacitor prefabricated cabin, with its characteristics of "high power density, millisecond-level response, and modular prefabrication," has become a key device to solve the pain points of large-scale short-term energy storage, opening up a new path of "fast response and easy deployment" for large-scale energy storage applications. [pdf]

The Energy Storage Shipping Container installation requires adequate space for the container dimensions plus additional clearance (typically 1-1.5 meters on all sides) for proper ventilation, maintenance access and safety compliance, with specific requirements varying based on the Container Battery Energy Storage capacity and local regulations that may dictate minimum spacing from buildings or property lines. [pdf]
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