Grid-connected wind power capacity in Greece exceeded 5.5 GW in the first half of 2025, reaching exactly 5,507 MW, according to the Hellenic Scientific Association for Wind Energy (ELETAEN). This growth marks a 2.8 % increase compared to the end of the previous year, representing a doubling of the growth rate seen in 2024.
Investments and new installations
During the first six months of the year, thirty-seven new wind turbines were connected to the national grid, adding a total of 152.2 MW. Investment in these installations amounted to €180 mn ($194 mn), demonstrating the strength of financial commitments in the sector.
In addition, more than 1 GW of new wind farms were either under construction or had already secured contracts by the end of June 2025. Most of these projects are expected to be grid-connected within the next eighteen months. Furthermore, an additional 300 MW was awarded through tenders with compliance guarantees.
Regional distribution and main operators
Central Greece concentrates 2,427 MW, accounting for 44 % of the country’s total capacity, followed by the Peloponnese with 709 MW (13 %) and Eastern Macedonia and Thrace with 535 MW (9.7 %). These three regions are the main hubs of Greek wind energy, with a significant concentration of new projects.
Among market operators, TERNA Energy leads with 1,034 MW, or 18.8 % of the installed national capacity. MORE follows with 774 MW (14.1 %), Iberdrola Rokas holds 409 MW (7.4 %), Principia has 368 MW (6.7 %), and PPC Renewables operates 308 MW (5.6 %).
Turbine suppliers and outlook
Regarding turbine supply, Vestas leads the Greek market with 45.1 % of installed capacity, followed by Enercon at 25.7 %, Siemens Gamesa at 16.4 %, Nordex at 7.6 %, and GE Renewable at 3.7 %. For the 152.2 MW added in the first half of 2025, Vestas supplied 84.9 MW (55.8 %), Enercon 37.3 MW (24.5 %), and Nordex 30 MW (19.7 %).
According to ELETAEN, Greece’s total capacity is expected to reach 6.5 GW after the commissioning of all ongoing projects. The figures released for the first half of 2025 reflect strong sector momentum, with significant investments continuing to support large-scale installations.
“The development of the wind farm is based on a combination of tenders and the speed of connecting new projects,” the Hellenic Scientific Association for Wind Energy (ELETAEN) said in its July report.
