Greenvolt Power has officially inaugurated Hungary’s largest Battery Energy Storage System (BESS) currently in operation, marking a major milestone in the company’s expansion across Central and Eastern Europe and reinforcing its commitment to advancing large-scale energy storage solutions.
The newly commissioned facility is located in Buj, a town in northeastern Hungary. It represents one of the most advanced energy storage installations in the region, combining a total installed power capacity of 99.8 megawatts (MW) with an energy storage capacity of 288.6 megawatt-hours (MWh). With the system now fully operational, it is expected to play a critical role in strengthening the country’s electricity grid and supporting the ongoing transition toward renewable energy.
The BESS project is designed to provide essential grid flexibility by storing excess electricity during periods of low demand and releasing it during peak consumption hours. This capability helps stabilize the power system, reduce fluctuations, and improve the overall reliability of electricity supply. In addition, it supports the integration of renewable energy sources such as wind and solar, which are inherently variable in nature.
As Hungary continues to expand its renewable energy capacity, large-scale storage systems like the one in Buj are becoming increasingly important for ensuring energy security and efficient grid management. The facility will also contribute to reducing dependence on conventional fossil fuel-based backup power plants by providing a cleaner and more responsive alternative for balancing supply and demand.
The inauguration ceremony was attended by several high-profile dignitaries, highlighting the strategic importance of the project. Among those present were Hungary’s State Secretary of Energy András Tóth, Buj Mayor László Takács, and MAVIR Deputy CEO for Operations Gergő Batta. They were joined by Greenvolt Group Chief Executive Officer João Manso Neto, along with senior representatives from the company.
For Greenvolt Power, this milestone strengthens its position as a leading developer of renewable energy and storage projects in Europe. The company continues to expand its portfolio of clean energy assets, with a growing focus on hybrid systems that combine generation and storage technologies.
The commissioning of the Buj Battery Energy Storage System represents a significant advancement in Hungary’s energy infrastructure, supporting grid stability, enhancing renewable integration, and contributing to the long-term decarbonization of the power sector.
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