During Week 24, Bulgaria was among the more export-oriented electricity markets in Southeast Europe, with renewable generation growth and regional price softening supporting supply conditions. The Bulgarian day-ahead electricity price fell by 7.2% to €93.58/MWh. The level kept the market broadly aligned with Greece and Croatia, while it remained below Romania and Hungary.
Electricity demand rose over the week, but it did not counterbalance the stronger supply-side dynamics. Bulgarian consumption increased by 3.0% to 477.68 GWh. At the same time, variable renewable generation expanded by 12.8%, adding support during a period of higher summer demand across the region.
Hydropower decline offsets domestic balance risks
Hydropower was identified as the main downside risk for Bulgaria’s domestic electricity balance during the week. Bulgarian hydro generation dropped by 42.9 GWh, equivalent to 21.8%, one of the sharpest declines recorded across the region. Under normal conditions, such a reduction would have tightened the system.
The impact of weaker hydro output was offset by higher renewable availability and flexible thermal generation. This combination supported system conditions despite the hydropower fall. As a result, supply remained sufficient to sustain broader market activity.
Export position strengthens as regional flows improve
Bulgaria’s net export position strengthened significantly following the shift in regional supply conditions. Net electricity exports increased by 41.3 GWh, or 103.2%. The change placed Bulgaria among the clearest beneficiaries of improved regional balance.
Bulgaria’s role in Balkan power flows is shaped by interconnections with Greece, Romania, Serbia, North Macedonia, and Türkiye, which influence regional market dynamics. Week 24 also reflected how cross-border flexibility and interconnector utilization can support export expansion even when hydropower output is weaker.
Bulgaria acts as a transit and balancing hub
Beyond pricing, the market signal pointed to the growing importance of trade flows for balancing in a system increasingly influenced by variable renewables. Even with hydro stress, Bulgaria expanded exports during Week 24 when regional renewable and thermal conditions provided support.
For market participants, Bulgaria continued to function as a key transit and balancing hub in Southeast Europe. Shifts in renewable output, lignite generation, hydro availability, and cross-border nominations were able to change Bulgaria’s commercial position quickly during the week.
