Cyclades Interconnection Phase D : Santorini - Folegandros - Milos - Serifos
Date TBD
Positive
Project advancing - milestone achieved
High Impact
Major milestone or critical setback
The Greek Ministry of Environment and Energy approved the environmental terms for Phase D of the Cyclades electrical interconnection, which links the Lavrio GIS substation on the mainland to the new Naxos GIS via the southern Cyclades islands of Serifos, Milos, Folegandros and Thira (Santorini). The approval covers the 150 kV AC submarine and underground cable system—comprising roughly 350+ km of subsea cables and about 20 km of onshore underground cables—as well as the construction of new GIS substations on Serifos, Milos, Folegandros and Thira, enabling these islands to be connected to the mainland grid within the broader Cyclades interconnection programme.