Greece installed around 1.9 GW of new solar capacity in 2025, bringing the total installed solar capacity to around 11.5 GW, according to industry estimates.
Greece will have installed around 1,893.5 MW of new PV capacity in 2025, according to estimates from pv magazine by the Hellenic Association of Photovoltaic Companies (Helapco).
Of this total, according to Helapco, 1,191 MW was connected to the Greek electricity transmission grid, while 702.5 MW was connected to the distribution grid.
The release of official data later this year is not expected to significantly change the figures. Greece therefore appears to have added approximately 678.5 MW less capacity than in 2024, when PV installations reached 2,572 MW.
The cumulative installed solar capacity was approximately 11.5 GW at the end of 2025.
Helapco policy officer Stelios Psomas said another 800 MW of PV capacity will be installed by 2025, but not yet connected to the grid. These projects are awaiting electrification, which is expected to take place in 2026.
Grid connection delays are a well-documented problem in Greece, mainly due to limitations at the distribution network level. Projects will not be penalized for missing connection deadlines and will retain their assigned feed-in or premium rates. However, investors will not receive compensation for the period during which projects are installed but not yet connected due to network limitations.
Greece’s PV additions in 2025 cover multiple market segments.
One segment that continues to deliver new capacity is small-scale PV projects supported by feed-in tariff contracts. Although this policy largely ended in 2024, requiring projects to participate in competitive auctions, Psomas said pv magazine that some projects – typically below 400 kW and located in areas such as Kozani, Florina, Evia and Crete – remain eligible under an extension running until August 31, 2026. Helapco is awaiting official data from the distribution system operator to determine how much capacity from this segment will be installed in 2025.
Self-consumption systems added approximately 270 MW in 2025, mainly under the now phased-out net metering system. Greece has since moved to a net billing framework. By the end of 2025, applications had been submitted for approximately 350 MW of net billing systems, but only 2% had been installed, with most projects awaiting grid connection conditions. Helapco continues to call for a more supportive policy framework to support self-consumption market dynamics.
The remaining capacity additions came from commercial projects that sold electricity directly to the market without fixed price fees, such as feed-in tariffs or power purchase agreements (PPAs), leaving them fully exposed to market risks.
The PPA segment, on the other hand, still needs to develop. Although the Greek government has allocated grid capacity for such projects, the connection conditions remain undefined, limiting progress.
Psomas said the Greek PV market is expected to continue growing in 2026, with higher additions than in 2025. However, he said the market is undergoing a transition driven by increasing curtailment of solar energy and a rise in zero or negative electricity prices. He added that Greece urgently needs energy storage. Policy frameworks for energy storage are in place, but there is uncertainty about the speed of implementation.
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