Logo

Izmit Gulf (Hersek - Dilovasi) Crossing 400 kV Submarine and Connected Underground Land Cable Connection Project

Izmit Gulf (Hersek - Dilovasi) Crossing 400 kV Submarine and Connected Underground Land Cable Connection Project

Thumb

Çanakkale Strait and İzmit Gulf Crossing 400 kV Submarine and Land Connection Cable Construction Project

The tender, financed through a loan from the International Bank for Reconstruction and Development (World Bank), was carried out in two Lots and was awarded to the Turkish Prysmian – Prysmian Powerlink JV under contract DB.KAB.19, with the contract signed on 25/06/2021.

  • Çanakkale Strait Crossing Submarine Cable (Lapseki3-Sütlüce3 – double circuit) (Lot1)
  • İzmit Gulf Crossing Submarine Cable (Hersek-Dilovası – double circuit) and Land Cable Connections (İzmit Gulf Interface-Hersek – double circuit, Dilovası-Diliskelesi – single circuit, Dilovası-Gebze – single circuit) (Lot2)

Each designed as a double circuit with a nominal capacity of 1000MW per circuit, the construction durations for the submarine cable projects are as follows:

  • 750 calendar days for the works under Lot1,
  • 780 calendar days for the works under Lot2,

The projects were targeted to be completed within 25-26 months. The provisional acceptance of the works under Lot1 was completed on 21.12.2023, and for Lot2 on 29.11.2024.

In previous years, two double circuit submarine cable projects constructed in the Çanakkale Strait enabled the integration of wind power plants in the region into the system, transferring their generation to the Gallipoli Peninsula and from there to Istanbul, where industrial and residential demand is high.

Considering the high wind potential in the region, these projects aim to:

  • Ensure the reliable and uninterrupted transmission of electricity generated from existing and newly established WPPs (Wind Power Plants) in the Southern Marmara and Western Anatolia regions to the transmission system,
  • Deliver it to consumers,
  • Prevent curtailments to the power plants in case of faults,

These projects are significant and critical investments in integrating renewable energy into the national electricity system. They will contribute to reducing/preventing greenhouse gas emissions from fossil fuel-based electricity generation, especially lignite, and support the country’s climate action agenda by increasing green energy production.