Greece Sets Record Electricity Exports in 2025

Greece achieved a historic high in electricity exports and renewable energy (RES) generation in 2025, according to Green Tank analysis. Net electricity exports surged to 3.01 TWh—nearly tenfold higher than 2024’s 307 GWh. The country was net-exporting for 11 of 12 months—up from just 5 months in 2024—with April as the sole exception due to a temporary interconnection outage with Italy. RES led domestic power generation with 26,381 GWh—an all-time high—though annual growth slowed to 3.9% (vs. an average 15% over the prior six years). Natural gas ranked second (23,338 GWh, +9.4% YoY), followed by oil (3,659 GWh, −5.2%), large hydro (3,387 GWh, −2.7% YoY—the lowest in five years), and lignite (2,723 GWh, −15.9% YoY—the lowest ever). Domestic electricity demand stood at 56,494 GWh (−0.9% YoY), while total domestic generation reached a record 59,503 GWh (+2.1%). RES covered 46.7% of demand—the highest share ever—followed by natural gas (41.3%, also a record and up from 29.1% in 2023), oil (6.5%, >90% of non-interconnected islands’ needs), large hydro (6.0%), and lignite (4.8%, the lowest share on record). Negative or zero-price hours on the wholesale market totaled 483 in 2025—more than double 2024’s 186.