DEDDIE says Greece’s distribution network will need to accommodate 16 GW of renewable capacity by 2030, nearly double the current level. The operator links the requirement to faster grid investment, batteries and more flexible connection arrangements.
Current distribution-connected renewables and end-decade share
About 9 GW of renewable capacity is connected to Greece’s distribution system today. DEDDIE estimates that reaching 16 GW would place distribution-connected projects at around 58% of the country’s total renewable capacity by the end of the decade.
Battery storage siting across substations
DEDDIE has identified roughly 70 substations that could host approximately 900 MW of merchant battery storage. Allocations would be based on available grid capacity and local network conditions. The operator’s approach targets locations where storage can be integrated alongside distribution constraints.
Flexible connections ahead of reinforcement completion
DEDDIE is also examining flexible connection agreements for generators and consumers in areas where network capacity is constrained. The arrangements would allow connections before all planned reinforcement work is completed. Such agreements could speed up investment, but projects may need to accept temporary output restrictions.
Renewables pipeline versus 2030 target and demand outlook
Greece has 18.019 GW of operating renewable capacity, while an additional 13.5 GW has secured grid connections. Together, these figures exceed the country’s 22.4 GW 2030 target, including 13.5 GW of solar and 8.9 GW of wind.
Electricity demand is expected to rise from 49 TWh in 2025 to about 51 TWh in 2030 under DEDDIE’s moderate scenario. Planned data centres, business parks and port developments could add another 8.5 TWh, potentially lifting demand to 59.5 TWh.
Main constraint shifts to networks, storage and flexible demand
The project pipeline is no longer described as Greece’s main constraint by DEDDIE. The operator says the key issue is whether networks, storage and flexible demand can expand quickly enough to absorb the pipeline.
