Plentiful sunshine and powerful winds are expected to keep renewable energy sources (RES) at a high level of contribution to Greece’s electricity supply on Friday, while the country is expected to remain a net exporter of electricity for another day.
The day-ahead wholesale electricity price in Greece is set at 97 euros per megawatt-hour (MWh) for Friday, up about 1% from Thursday, according to data from the Hellenic Energy Exchange (HEnEx). The Greek market is expected to remain comparatively less expensive than several other European markets as a heatwave drives up demand for cooling and puts upward pressure on power prices.
Indicative day-ahead prices for Friday are 125 euros/MWh in Bulgaria, 143 euros in Romania, 176 euros in Italy, 146 euros in France, 140 euros in Germany, 139 euros in Poland, 140 euros in Spain and 146 euros in Portugal.
The relatively lower Greek price is attributed in large part to high renewable generation, which reduces the need to dispatch more expensive thermal power plants even as electricity demand remains elevated because of high temperatures. This dynamic is consistent with broader European market conditions, where strong solar output can increase daytime electricity supply while heat-driven demand and declining solar production later in the day can contribute to price volatility.
According to HEnEx data cited in the Greek report, wind and solar generation are expected to cover 65.5% of demand on Friday. Hydroelectric plants are projected to contribute 5%, while battery storage is expected to account for 0.6%.
Natural gas-fired plants are expected to cover 27.9% of demand, while lignite is projected to have no contribution.
The high renewable output is also expected to allow Greece to maintain a net export position in electricity for another day, with exports projected to exceed 56 GWh on Friday.
Greece has increasingly shifted toward a net-export position as renewable generation has expanded. Official and industry data show that the country was a net electricity exporter for the second consecutive year in 2025, with renewable generation increasingly supporting exports during periods of high output.
