DEDDIE says Greece’s distribution network must be able to accommodate 16 GW of renewable capacity by 2030, which it describes as nearly double the current level. The operator links the requirement to the need for faster grid investment, battery storage and more flexible connection arrangements.
Renewables connected to distribution and share targets
About 9 GW of renewable capacity is connected to Greece’s distribution system today. DEDDIE said that reaching 16 GW would place distribution-connected projects at roughly 58% of the country’s total renewable capacity by the end of the decade. The operator’s planning therefore focuses on scaling distribution uptake alongside overall renewable growth.
Battery storage siting at substations
DEDDIE has identified around 70 substations that could host approximately 900 MW of merchant battery storage. Allocations, according to the operator, would depend on available grid capacity and local network conditions.
Flexible connection agreements in constrained areas
The operator is also reviewing flexible connection agreements for generators and consumers. DEDDIE said such arrangements could enable connections in constrained areas before all planned reinforcement work is completed. The operator noted that projects may need to accept temporary output restrictions under these terms.
Operating renewables, grid-connected pipeline and demand outlook
Greece has 18.019 GW of operating renewable capacity, while another 13.5 GW has secured grid connections. DEDDIE said the combined total exceeds the country’s 2030 target of 22.4 GW, 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. The operator added that planned data centres, business parks and port developments could contribute an additional 8.5 TWh, potentially taking demand to 59.5 TWh.
Main constraint shifts toward networks and flexibility
DEDDIE said the project pipeline is no longer Greece’s main constraint. Instead, it highlighted whether networks, storage and flexible demand can expand quickly enough to absorb new capacity.
