Green Energy Investhor Zrt. (GEI) has successfully completed the trial operation of its energy storage development in Paks, and the system has, therefore, begun commercial operation. The energy storage facility connected to GEI’s solar power plant in Paks contributes to the more balanced and efficient use of renewable energy generation, while supporting the stability and flexibility of the electricity system. According to GEI, energy storage facilities may play a key role in Hungary in the operation of a renewable energy-based electricity system in the coming years.