Romania is another European country planning to significantly expand its investments in energy storage. 5 GW of battery systems will be built by the end of next year, with the goal of reaching 5 GW a year later. These ambitious energy storage targets are aligned with transmission. . Nova Power & Gas's 400 MWh project in Cluj County is the largest battery energy storage system (BESS) to date to have been connected to Romania's grid. The largest battery energy storage system (BESS) to date in Romania, with a capacity of 200 MW/400 MWh, has been commissioned in Cluj County by the. . In a significant move to bolster Europe's energy infrastructure, SINEXCEL is supporting the deployment of a 7.