Group 1 - Fluence Energy, Inc. (NASDAQ:FLNC) experienced a significant share price increase of 36.13% from September 16 to September 23, 2025, making it one of the top-performing energy stocks during that week [1] - The surge in Fluence Energy's stock price is attributed to the announcement that DRI, the EU renewables division of Ukraine's DTEK Group, has chosen the company to supply battery storage units for its 133 MW Trzebinia project in Poland [2] - Julian Jansen, Managing Director of Growing Markets at Fluence Energy, highlighted Poland's potential to become one of the five largest energy storage markets in Europe by 2030, indicating the company's commitment to investing in Polish operations to enhance grid resilience and energy security in Central and Eastern Europe [3] Group 2 - Fluence Energy is also set to provide technology for two large battery energy storage systems (BESS) projects in Switzerland, with a total capacity of 58.6 MW, further expanding its footprint in the energy storage sector [3]