Greece Adds Nearly 1.9 GW of Solar in 2025 as Grid Constraints Persist
Greece installed approximately 1,893.5 MW of new PV capacity in 2025, according to estimates from the Hellenic Association of Photovoltaic Companies.
Of the total additions, around 1,191 MW were connected to the country’s electricity transmission grid, while 702.5 MW were linked to the distribution network. The release of official data later this year is not expected to significantly revise these figures.
Despite the solid annual growth, installations declined compared to 2024, when Greece added 2,572 MW of PV capacity—suggesting a year-on-year decrease of roughly 678.5 MW. By the end of 2025, the country’s cumulative installed solar capacity had reached approximately 11.5 GW.
Helapco policy officer Stelios Psomas noted that an additional 800 MW of PV capacity was installed in 2025 but has yet to be connected to the grid. These projects are currently awaiting electrification and are expected to come online in 2026.
Grid connection delays remain a well-documented challenge in Greece, primarily due to constraints within the distribution network. While developers are not penalized for missing connection deadlines and can retain their awarded feed-in tariffs or premium schemes, they do not receive compensation for the period during which completed projects remain unconnected due to network limitations.
Diverse Market Segments Drive Installations
Greece’s PV additions in 2025 were spread across multiple market segments. Small-scale projects supported by feed-in tariff contracts continued to contribute steadily to new capacity.
Self-consumption systems accounted for around 270 MW of new installations, largely under the country’s now-phased-out net metering scheme. Greece has since transitioned to a net billing framework. By the end of 2025, applications for approximately 350 MW of net billing systems had been submitted, but only 2% had been installed—primarily due to pending grid connection terms.
The remaining capacity additions came from merchant projects, which sell electricity directly into the market without fixed-price mechanisms such as feed-in tariffs or power purchase agreements (PPAs), leaving them fully exposed to market price volatility.
In contrast, the PPA segment has yet to gain traction. Although the government has allocated grid capacity for such projects, the lack of clearly defined connection terms continues to limit progress.
Recommended News
View More
Join Us