DTEK Renewables International (DRI), the EU renewables arm of Ukraine’s DTEK Group, has selected Fluence Energy to deliver a 133 MW battery energy storage system (BESS) in Trzebinia, southern Poland. The project, set to begin operations in 2027, will be the largest BESS facility in the country under a 17-year capacity market contract.
The 622 MWh Trzebinia project will play a key role in stabilizing Poland’s power grid, providing instant backup during peak demand and generation shortfalls. Beyond grid security, the facility will lower costs by enabling energy arbitrage — storing electricity when wholesale prices are low and releasing it when prices rise.
The initiative follows DTEK’s recent commissioning of a 200 MW storage portfolio across six sites in Ukraine, also with Fluence technology, to strengthen resilience against ongoing energy system disruptions.
Fluence will deploy its Smartstack™ platform in Trzebinia, offering high-density modular storage with advanced cybersecurity protections. These measures are designed to counter rising cyberattacks against Polish infrastructure, which was the most targeted globally for politically motivated cyber incidents in early 2025.
“Together with Fluence, we successfully delivered a portfolio of projects in Ukraine in record time,” said Murat Cinar, CEO of DRI. “Now, the Trzebinia project will support Poland’s energy transition, strengthen grid resilience, and enhance European energy independence.”
Julian Jansen, Managing Director of Growing Markets at Fluence, noted that Poland’s storage capacity could jump from 25 MWh in 2024 to over 20 GWh by 2030. “Poland has the potential to be one of the five largest European markets by 2030,” he said.
For DRI, the project marks its first major step in Poland, part of a broader regional strategy spanning Croatia, Italy, and Romania. For Fluence, it underscores its growing footprint in Central and Eastern Europe.
