ADMIE: 2 billion euro framework agreement for 150 kV cables to the Aegean islands close to signing

Ioannis Margaris, deputy chairman of ADMIE (IPTO), Greece’s electricity transmission system operator, said on 3 November at the 9th Athens Investment Forum that the 2 billion euro framework agreement for the submarine cables of the 150 kV interconnections in the Dodecanese and the Northern Aegean is to be signed in the immediate future, Newmoney and Mononews reported.

What was announced. According to Margaris, ADMIE is evaluating bids for 11 substations to be built on the large and medium-sized Aegean islands that are to be connected. For the Corinth–Kos interconnection, the contract for the cable section is expected to be awarded in the coming days, while the second evaluation phase for the converter stations is under way.

The figures. The publication OT notes that the cable section of the Dodecanese interconnection is worth 1.4 billion euros, that the framework agreement for the submarine cables still requires approval from the Court of Audit, and that the Dodecanese and North-East Aegean projects have 2030 as their horizon. ADMIE’s ten-year plan, now in public consultation, involves investment of about 9 billion euros. According to the same source, about 700 MW of storage currently operates in Greece, up from 32 MW in March, with targets of 1 GW by the end of 2026 and 1.5 GW by mid-2027.

Context. Margaris said storage and data centres have created a veritable “cosmogony” in the sector and that the speed of their development will matter for system adequacy, for grids and for energy prices. He welcomed the bill of the Ministry of Environment and Energy, which he said takes these challenges into account and sets rules for the rational development of both sectors. ADMIE also wants to upgrade the specifications of existing lines to raise their capacity and reduce the need for new infrastructure.

What comes next. For the second Greece–Italy interconnection, developed with Italian operator Terna, the environmental impact study will be submitted in the coming weeks, and tenders for the submarine cables and converter stations on both sides are expected to start in summer 2027.

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