
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.

The basic base station equipment for digital mobile communications systems consists of amplifiers (AMP) to amplify the transmission and reception signals to desired levels, modems (MDE) to convert base band signals to high-frequency signals, speech processors (SPE) to convert voice signals to digital code strings, base station control equipment (BCE) that allocates radio channels and switches over channels with adjacent base stations, and the base station antennas (ANT). [pdf]
Control Equipment: Base stations include control equipment that manages the communication protocols and coordinates the interaction between mobile devices and the network. This equipment ensures that data is routed correctly and efficiently. Power Supply: A reliable power supply is essential for the continuous operation of a base station.
A base station is a critical component in a telecommunications network. A fixed transceiver that acts as the central communication hub for one or more wireless mobile client devices. In the context of cellular networks, it facilitates wireless communication between mobile devices and the core network.
The base station will have one or more RF antennas installed to transmit and receive RF signals from other devices. The block diagram of a base station typically includes the following key components: Baseband Processor: The baseband processor too deals with different communication protocols and interfaces with mobile network infrastructure.
Power Supply: A reliable power supply is essential for the continuous operation of a base station. This includes backup power systems to maintain functionality during power outages. Multiple Antennas: Base stations often have multiple antennas to support various technologies such as 3G, 4G, and 5G, enhancing their capacity and coverage.
In the world of radio communications, a radio base station plays a vital role in ensuring reliable and seamless communication across a wide area. Whether used in mobile networks, professional communication systems, or emergency response scenarios, base stations are essential for facilitating voice, data, and video transmissions.
Base stations are important in the cellular communication as it facilitate seamless communication between mobile devices and the network communication. The demand for efficient data transmission are increased as we are advancing towards new technologies such as 5G and other data intensive applications.

The definition of mobile substation or portable substation is a completely self-contained trailer-mounted substation consisting of a transformer, cooling equipment, high voltage switchgear, and low voltage switchgear along with metering, protection relaying devices, AC and DC auxiliary power supply, surge protection, and cable connecting arrangement. [pdf]
Industrial power supply systems: Mobile substations can provide a reliable and secure power supply for industrial plants that require high power quality, availability, and efficiency. They can also provide backup power or load sharing for critical processes, such as oil and gas production, mining operations, chemical plants, etc.
They are pivotal in ensuring a reliable power supply during emergencies, maintenance, or in remote areas. By housing all necessary components within a portable framework, mobile substations offer flexibility, cost-effectiveness, and rapid deployment, making them ideal for a range of applications, from disaster recovery to temporary power support.
Cable connecting system: The cable connecting system is the component of a mobile substation that connects the mobile substation to the power source and the load using flexible cables and connectors. The cable connecting system has to be designed to provide easy and secure connection and disconnection of the cables.
Temporary mobile substations are deployed when there is a planned interruption or maintenance of existing substations, or when new construction or power upgrades are underway. These substations prevent service interruptions by taking over the role of the permanent substation for a specific time frame.
Metering system: The metering system is the component of a mobile substation that measures and records the electrical parameters of the power flow, such as voltage, current, power, frequency, etc. The metering system has to be designed to provide accurate and reliable data for monitoring and billing purposes.
The switchgear enables the routing of electricity within the substation and allows isolation of faults without affecting the entire system. Modular switchgear solutions in mobile substations support multiple configurations, ensuring compatibility with varying power systems.

Energy storage cabinet equipment costs typically range from $5,000 to $50,000 depending on the capacity, technology, and supplier, 2. key factors impacting investments include installation expenses, maintenance requirements, 3. as well as local regulations and incentives that could influence overall expenditure, 4. energy storage has become crucial for renewable energy integration, underscoring the importance of pricing transparency for consumers. [pdf]
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