During Week 37 of 2025, electricity prices across Southeast European (SEE) countries rose significantly compared to Week 36. All markets reported weekly average prices above €100/MWh, except for Türkiye. The increase was driven by higher gas and CO2 emission allowance prices, lower solar output, and recovering demand across most markets. Prices averaged around €101/MWh, peaking on Tuesday, September 9, before declining toward the end of the week.
Hungary and Croatia experienced the largest price increases at 18.99% and 17.38% respectively, followed by Romania at 16.87%. Greece and Bulgaria saw gains of 14.81% and 14.64%, while Italy, the most expensive market, recorded a smaller rise of 4.41%.
In Central Europe, most electricity prices were above €100/MWh, with nuclear-supplied France largely unaffected. Slovakia was the most expensive market at €103.46/MWh, up 12.57%, followed by Slovenia at €102.48/MWh. France recorded the lowest price in Central Europe at €26.36/MWh, a decline of 8.48%. Overall, European weekly average electricity prices were around €93/MWh, ranging from €26.36/MWh in France to €111.16/MWh in Italy. In the MIBEL markets, Spain’s prices jumped 35.60% to €65.21/MWh and Portugal’s rose 35.27% to €61.36/MWh.
In Southern Europe, all SEE countries reported prices above €100/MWh except Türkiye, which had the lowest weekly average at €58.58/MWh. Greece followed at €100.99/MWh, while Italy recorded the highest at €111.16/MWh. Hungary and Romania were the second and third most expensive SEE markets at €112.85/MWh and €108.34/MWh. Daily peaks occurred on September 9, with the lowest prices on September 14.
Electricity demand in the SEE region fell by 2.10% compared to Week 36, totaling 16,869.56 GWh, mainly due to lower demand in Türkiye (-6.61%) and Greece (-3.74%). Other SEE countries recorded marginal increases, with Italy seeing the largest rise at 2.98%.
Renewable generation in Week 37 declined by 13.2% to 3,017.84 GWh. Wind output fell 13.3% to 1,398.18 GWh, with Hungary and Greece showing the largest decreases (-32.8% and -32.7%). Solar production dropped 13.1% to 1,619.66 GWh, led by declines in Hungary (-29.5%) and Romania (-26.5%). Hydropower output fell 9.15% to 1,880.16 GWh, mainly due to decreases in Bulgaria (-40.26%), Croatia (-15.70%), and Türkiye (-13.55%), while Serbia, Hungary, Italy, and Romania recorded small increases.
Thermal generation remained stable, increasing 0.63% to 7,840.41 GWh. Coal-fired output decreased by 2.86% to 3,317.01 GWh, while gas-fired generation rose 3.34% to 4,523.40 GWh. Türkiye saw declines in both coal (-1.88%) and gas (-8.60%), while Bulgaria recorded a 12.27% recovery in gas output despite a 12.44% drop in coal production. Greece increased coal generation by 128.77% and gas output by 5.50%.
Cross-border electricity trade showed a 20.58% increase in net imports to 1,375.12 GWh. Exports fell 41.3% to 104.93 GWh, and imports decreased 21.8% to 1,480.05 GWh. Serbia, Hungary, Croatia, and Romania recorded higher net imports (+69.92%, +47.00%, +22.06%, and +6.62%), while Greece and Bulgaria remained net exporters but with lower volumes (-21.89% and -41.1%). Türkiye shifted from exporting to importing electricity, totaling 19.09 GWh.
