AES’ TPP in Galabovo ready for winter operation

November 11, 2025

The AES’ TPP in Galabovo is fully prepared for operation during the upcoming winter season. Bulgaria's newest and most advanced coal-fired power plant has more than 240,000 tonnes of lignite coal in reserve. That is enough to ensure the plant’s regular operation at full load for nearly one month. In accordance with regulatory requirements, AES’ TPP in Galabovo also maintains adequate reserves of liquid fuel and limestone, both essential for the desulfurization process.

The power plant has completed its annual preventive maintenance campaign on both power units. The generating facilities are now fully available to the national power system and ready for operation throughout the coming winter period. 

During the sharp cold snap in early October, AES’ TPP in Galabovo supplied nearly 50% of all electricity generated by Bulgaria’s large thermal power plants over the first eight days of the month, once again demonstrating its critical role in ensuring the country’s energy security. AES’ TPP in Galabovo remains Bulgaria’s most flexible coal-fired power plant, providing the Electricity System Operator (ESO) with a wide range of system services for managing the national electricity grid. The facility is also the only entirely new coal-fired power plant built in Bulgaria in the past 40 years.