Greece is entering an exceptionally dynamic phase of solar expansion, with new data from the transmission system operator ADMIE indicating that photovoltaics will account for nearly all new generation capacity added in the coming years. Around 5,340 MW of solar projects are already under construction, while an additional 2.4 GW is expected to move forward on a similar timeline.
A parallel assessment by the national photovoltaic association HELAPCO suggests that this rapid development will push Greece well beyond its existing policy goals. The association estimates that the country could exceed its 2030 solar target of 13.5 GW by as early as 2026. By the end of the decade, total solar capacity could rise to approximately 21.5 GW.
Currently, Greece has about 10.9 GW of operational solar capacity across both the transmission and distribution networks. When combined with the 5.3 GW under construction and the 2.4 GW of projects that already hold connection contracts, the active pipeline reaches roughly 18.7 GW. This figure excludes self-consumption systems and additional projects that are expected to advance, potentially lifting totals even closer to HELAPCO’s projections.
All told, operational installations and projects with guaranteed network access exceed 23 GW, highlighting both the scale and accelerating pace of the sector’s growth. Solar additions are set to break another record in 2025, with between 2.5 and 2.6 GW expected to come online, up from 2 GW last year. So far this year, around 1.6 GW has already been connected, with another 1 GW planned before year-end.
To support the rapid expansion of renewables, Greece’s National Energy and Climate Plan outlines significant flexibility measures, including 4.33 GW of battery storage and 1.93 GW of pumped-storage hydropower by 2030. Recent tenders—most notably a 4.7 GW call for merchant standalone battery projects—have pushed the national battery pipeline to an estimated 6.4 GW.
