Greece’s installed wind power capacity reached 5,507 megawatts (MW) by the end of June 2025, following the addition of 152MW from 37 new turbines in the first half of the year, the Hellenic Wind Energy Scientific Association (ELETAEN) said on Thursday.
The newly connected capacity reflects a 2.8% increase since the end of 2024, supported by wind power investments amounting to €180 million. ELETAEN said the growth rate in the first half of 2025 has doubled compared to the previous year, though further acceleration is needed to achieve a balanced renewable energy mix.
“This increase marks a doubling of the annual growth rate compared to 2024,” ELETAEN said, adding that “more needs to be done” to ensure wind energy contributes effectively to the national energy transition.
As of June, more than 1 gigawatt (GW) of new wind projects were either under construction or under contract, with most expected to come online within the next 18 months. An additional 300MW of capacity has been awarded through tenders and secured performance bonds, but has not yet moved into the construction phase.
ELETAEN estimates that total wind capacity in Greece will reach approximately 6.5GW by the end of the current development cycle.
Central Greece remains the country’s leading wind region, with 2,427MW installed, followed by the Peloponnese (709MW) and Eastern Macedonia–Thrace (535MW).
From January to June 2025, Vestas accounted for 84.9MW, or 55.8% of new turbine installations, followed by Enercon with 37.3MW (24.5%) and Nordex with 30MW (19.7%). Vestas also maintains the largest share of Greece’s operational wind fleet, at 45.1%, ahead of Enercon (25.7%), Siemens Gamesa (16.4%), Nordex (7.6%), and GE Renewable Energy (3.7%).
In terms of investors, Terna Energy leads with 1,034MW, representing 18.8% of total installed capacity, followed by MORE (774MW), Iberdrola Rokas (409MW), Principia (368MW), and PPC Renewables (308MW).
Wind farms totaling 1,592MW were awarded contracts in tenders held between 2018 and 2022, ELETAEN said. However, only 746MW—47%—had been commissioned by mid-2025, primarily due to bureaucratic hurdles.
“These projects would have delivered electricity at lower costs than fossil fuels, offering relief to both consumers and the economy,” the association stated, calling for measures to reduce delays in permitting and grid connection processes.
