In the week to 20 September, Greece increased net electricity exports while Bulgaria remained the larger regional exporter despite a smaller export surplus. Greek net exports rose from 91.93 GWh to 126.87 GWh. Electricity demand fell 9.32% to 1,019.36 GWh, alongside a 12.46% decline in gas-fired generation.
Generation and demand shifts in Greece
Wind output increased by 10.3%, while solar generation fell by 9.2%. The changes in demand and generation contributed to higher Greek net export volumes over the week. Greece’s consumption and gas-fired output movements coincided with the increase in exports.
Bulgaria’s export balance and price movement
Bulgaria’s net export balance stood at 247.47 GWh, down 9.90% from the previous week. Hydropower output fell 28.51% to 37.61 GWh, while total thermal generation was broadly stable. Bulgaria’s weekly day-ahead price dropped 2.93% to €162.07/MWh, with Greece averaging €155.42/MWh.
Implications for cross-border trading volumes
The two markets reached export positions through different changes in demand and generation. Greece exported more as consumption declined and gas-fired output fell, while Bulgaria maintained a much larger surplus despite reduced hydro contribution and a smaller export balance. For cross-border traders, whether these export volumes persist depends on hourly generation patterns and border capacity as autumn demand changes.