Bulgaria has taken a strategic step forward in the modernization of its energy sector with the official commissioning of one of the largest standalone battery energy storage systems (BESS) in Eastern Europe. The new installation is located in the Maritsa East 3 TPP complex, using the existing electricity infrastructure in the Stara Zagora region.

With a capacity of 202 MW and a storage capacity of 500 MWh, the ContourGlobal Maritsa BESS project ranks among the largest and most technologically advanced battery facilities in Bulgaria and the region. The system is already actively participating in the national electricity market, including the Day Ahead and Intraday markets, contributing directly to the balancing, flexibility, and security of the Bulgarian electricity system.

The ContourGlobal Maritsa BESS project is funded by the European Union through the NextGeneration EU mechanism as part of the National Recovery and Resilience Plan. The energy storage system covers an area of 25,000 square meters and is equipped with 110 battery platforms and 28 combined energy conversion systems and transformers, ensuring effective integration into the electricity transmission grid.

Source: Ministry of Energy