Germany, April 22 -- RWE and Polarium, a developer of distributed battery energy storage systems and flexibility solutions, are joining forces to market battery flexibility in the German power market in a new way. From late 2026 onwards, RWE will optimise 50 megawatts (MW) of power (equivalent to 135 megawatt hours (MWh) of electricity) from Polarium's distributed battery portfolio, within its energy trading operations. Over 1,600 behind-the-meter battery energy storage systems (BESS) located throughout Germany are aggregated via Polarium's cloud platform into one virtual battery, enabling real-time control and secure market participation while unlocking value from underutilised assets and grid infrastructure. Polarium is developing a portf...