RWE has launched construction on a 236MW/470MWh BESS in Germany, while IPP Kallista has done the same on a 193MW/386MWh system in France, supplied by Envision Energy.

Activity in Italy’s grid-scale market is accelerating, with Sonnedix and the Strioga Family Foundation acquiring projects totalling over 1GWh combined, while BNZ and RWE have ordered BESS from Sungrow and LONGi respectively totalling 540MWh.

RWE Renewables Australia has officially opened the 50MW/400MWh Limondale battery energy storage system (BESS) near Balranald in south-west New South Wales.

RWE has received official sign-off from the AEMO and Transgrid to operate Australia’s first 8-hour BESS at full capacity.

Large-scale BESS projects have been progressed in Italy, Romania, Germany, Poland, Denmark and elsewhere in Europe, totalling around 1GW under construction, 1GWh soon to be, and another 1GWh at earlier stages.

Power firm RWE has partnered with distributed battery storage firm Polarium for a battery-based virtual power plant (VPP) in Germany.

According to a representative from sodium-ion (Na-ion) battery energy storage system (BESS) startup Peak Energy, the company will pilot a 3.1MWh system at Energy firm RWE’s Eastern Wisconsin, US lab.

Energy firm RWE added 2GW to its US operating capacity in 2025, bringing its total operational capacity to nearly 13GW across the country.

A busy week of grid-scale BESS project news from Germany, with numerous development, project, optimisation and tolling partnerships announced.

Power firm RWE is about to start building a 400MW/800MWh BESS project in Germany, among the largest in the country to reach the construction stage. In related news, Kyon Energy has connected a 282MWh project to the grid, possibly the largest in the country to reach that milestone.