Romania’s electricity producer Hidroelectrica is set to commission its first major battery storage facility ahead of schedule. The 72 MWh lithium-ion energy storage system (BESS) at the Crucea Nord wind farm is now expected to become operational in May 2026, nearly one year earlier than originally planned.
By early 2026, the project had already reached over 80% completion, far exceeding the initial two-year timeline. The BESS comprises nine battery units delivering a total of 36 MW of output and 72 MWh of storage. All units were fully installed by December 2025, with the project developed in partnership with Prime Batteries and Enevo Group.
Hidroelectrica emphasizes that the Crucea Nord battery will enhance system flexibility, support network balancing, reduce internal imbalances at the wind farm, improve turbine performance, and limit mechanical wear. Strategically, the project is expected to strengthen Romania’s electricity grid reliability, promote renewable integration, and contribute to a more sustainable energy system.
The lithium-ion battery contract, signed in April 2025, is valued at approximately €16 million (excluding VAT). Integrated into the 108 MW Crucea Nord wind farm, the battery marks a key milestone for Hidroelectrica, which operates 188 hydropower plants totaling 6.4 GW alongside other wind assets.
According to Transelectrica, Romania currently has 494 MW of installed battery storage, equating to roughly 913 MWh. The Crucea Nord project adds to this growing segment, highlighting the expanding role of energy storage in the national energy system.