Greece’s distribution network will need to accommodate 16 GW of renewable capacity by 2030, nearly double the current level, requiring faster grid investment, batteries and more flexible connection arrangements, operator DEDDIE said.
Around 9 GW of renewable capacity is connected to the distribution system today. Reaching 16 GW would give distribution-connected projects about 58% of Greece’s total renewable capacity by the end of the decade.
DEDDIE has identified around 70 substations that could host approximately 900 MW of merchant battery storage, with allocations based on available grid capacity and local network conditions.
The operator is also examining flexible connection agreements that would allow generators and consumers to connect in constrained areas before all planned reinforcement work is completed. Such agreements could speed up investment but may require projects to accept temporary output restrictions.
Greece already has 18.019 GW of operating renewable capacity, while another 13.5 GW has secured grid connections. 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 increase 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.
The project pipeline is no longer Greece’s main constraint. The greater challenge is whether networks, storage and flexible demand can expand quickly enough to absorb it.
