Power grid operator IPTO’s grid interconnection plan to link the west and southern Cyclades islands with coastal Lavrio, southeast of Athens, as well as the operator’s upgrade project for its pivotal Koumoundourou high-voltage substation, including a new transmission line to Korinthos, all regarded as vitally important projects by the European Commission, stand to EU Recovery and Resilience Facility (RRF) funds totaling 195 million euros.
The RRF subsidies to be allocated to the west and southern Cyclades islands grid interconnection, seen reaching 165 million euros, will cover just under half of this project’s total cost, budgeted at 408 million euros.
The grid interconnection work will entail the development of five underground and subsea cable circuits measuring 370km in length as well as the installation of four GIS substations on the islands of Santorini, Serifos, Folegandros and Milos.
The Koumoundourou high-voltage substation upgrade stands to receive the other 30 million euros in RRF funds for the two projects.
The Koumoundourou upgrade, budgeted at 46 million euros, has been awarded to the Mytilineos group and is expected to be completed by September, 2023, according to an IPTO announcement.
Power grid operator IPTO’s pivotal Koumoundourou high-voltage substation, serving the wider Athens area, will be ready to counter elevated electricity demand levels of the summer season as the installation of a new autotransformer, required following an explosion and fire at the unit in February, has been completed, enabling the facility to return to full capacity, expected within the next few days.
Since the accident, the substation has operated below full capacity, following temporary adjustments.
The Koumoundourou substation’s return to full capacity promises to reinforce the country’s grid security, especially in the Peloponnese, as the summer’s power-demand peaks draw nearer.
Besides the fire-related repair work, the Koumoundourou substation is also undergoing an overall revamp, budgeted at 46 million euros. Work on this upgrade, scheduled to require a total of two and a half years to complete, is expected to be completed in September, 2023.
Once completed, the upgrade will enable the substation to take on a significant proportion of the electricity load needed in the wider Athens area, while it will also serve as the connection point for the Crete-Athens grid interconnection, expected to be completed within 2023.
The substation will also serve as a terminal for the Eastern Corridor (400 kV) from the Peloponnese to the mainland, whose completion is expected in 2024.
Power grid operator IPTO has announced a tender for the reconstruction and modernization of the 400-kV Koumoundourou substation serving the wider Athens area, a project budgeted at 46 million euros (57 million euros including VAT).
This facility was constructed in the 1970s, along with four other units, to transmit electricity to the wider Athens area.
The Koumoundourou substation upgrade, one of the projects included in the so-called Eastern Corridor, is expected to be completed in 2024. This corridor also includes the Megalopoli and Corinthos substations, both undergoing upgrades at present.
Interested parties face an August 10 deadline to submit their offers to IPTO, expecting turn-key, ready-to-use delivery.