By the early hours of Friday 16 August 2024, network crews had restored electricity supply to Sikinos and Folegandros following the seven‑hour overnight blackout, while Ios continued to face rotating hour‑long outages as operators worked to fully resolve the underlying issue on the medium‑voltage submarine cable system from Paros. This marked the resumption of normal power transmission to Sikinos and Folegandros within the local inter-island cable network.
On the evening of Thursday 15 August 2024, the islands of Folegandros, Ios and Sikinos, which are supplied via medium-voltage underwater cables from Paros, experienced a complete electricity outage lasting about seven hours, from 20:30 until 03:30 the following morning, with the likely cause reported as unprecedented demand driven by high tourist numbers and high temperatures stressing the decades‑old interconnection lines. This event caused a major supply interruption on Sikinos and Folegandros, affecting the local cable network that links the two islands.
A 2022 Europa Nostra report notes that Sikinos is "currently interconnected" with neighbouring Folegandros, whose fuel-oil power plant supplies the electricity needs of both islands, indicating that the Sikinos–Folegandros submarine cable is in service and operating at full capacity as part of the local supply system.
| Cyclades (South Aegean) | Cyclades | |
|---|---|---|
| Landfall | Sikinos, Greece | Karavostasis (Folegandros), Greece |
| Grid Connection | — | — |
Cyclades (South Aegean)
Cyclades