Bulgarian electricity production reached 26,906 GWh between 1 January and 9 August, an increase of 7.8 per cent year on year. Consumption rose by 6.8 per cent to 25,046 GWh, leaving a trade surplus of 1,860 GWh, compared with 1,511 GWh in the corresponding 2025 period.
Renewable output delivered through the transmission system increased by 16.1 per cent to 2,936 GWh, while distribution-connected renewable generation rose 6.2 per cent to 2,723 GWh.
Hydropower production increased particularly sharply, reaching 3,396 GWh compared with 1,811 GWh a year earlier. That favourable year-to-date comparison does not mean water conditions are currently normal across the region, but it leaves Bulgaria with a stronger accumulated generation position than many neighbouring markets.
The combination of generation surplus and rapidly expanding storage makes Bulgaria increasingly important to regional balancing. It can absorb Greek and domestic solar during low-priced hours, store part of that energy and release it when Romanian, Serbian or North Macedonian systems are short.
This is changing the value of interconnection capacity. The historic north-south pattern, under which Bulgarian thermal and nuclear output moved towards Greece, is becoming more dynamic. Cheap Greek solar can flow north at midday, while Bulgarian batteries and thermal units can reverse the direction during the evening.
