Project Records

Awarded HVDC 525kV XLPE cable system in Germany

High Voltage DC(HVDC) Underground Cable Project for Amprion GmbH which sets new innovative benchmarks in the HVDC Industry.

Sumitomo Electric, with the support of its technology partner, Südkabel GmbH, to deliver the world’s highest voltage 525kV XLPE Insulated HVDC underground cable system for the German TSO Amprion, "Corridor A-Nord" project. This project is considered one of the most critical power transmission infrastructure projects in the country to support the “Energy Transition” of Germany to introduce more renewable energy to consumers and reduce the country’s CO2 emissions. Sumitomo Electric will be responsible for the design, manufacture, logistics, installation, jointing works, commissioning and maintenance of the approximately 300km long cable route.

Southern India (Trichur-Pugalur) HVDC Project

The first HVDC XLPE cable and VSC project in India, with 2 x 1 GW of capacity.

Our unique HVDC-XLPE cable technology, such as enabling polarity reversal and the ability to operate at 90ºc conductor temperature, is the ideal HVDC-XLPE cable system solution for the project; among 200 km of route length in high temperature region, consist of 32 km of cable route and overhead line for remaining part which will be facing frequent lightning in rainy season.

UK-Belgium 400 kV XLPE HVDC transmission system

UK-Belgium 400 kV XLPE HVDC transmission system (in service since 2019)

The project is 1 GW interconnector between UK and Belgium.
Sumitomo Electric supplies and installs the world’s first 400 kV HVDC XLPE cable system which is the highest voltage in HVDC XLPE cable system. The cable link consists of 130 km offshore route and 12 km onshore route.

HVDC XLPE submarine and land cables connects Hokkaido to Honshu

Hokkaido-Honshu 250 kV XLPE HVDC transmission system (in service since 2012)

These HVDC XLPE submarine and land cables connects Hokkaido to Honshu and has a route length of 43km. This is the world first project consisting of HVDC cables with LCC converter and overhead line under polarity reversal operation.

San Francisco Bay Crossing (in service since 2016)

The San Francisco Bay Crossing project includes 230 kV XLPE 1,400 mm2 subsea cables with total cable length of approx. 14 km. We have manufactured specially designed subsea cables to meet customer’s requirements on high tensile strength of the cable.

German North Sea (in service since 2017)

A project for 155 kV subsea cable connects an Offshore Wind Platform and a HVDC offshore platform in German North Sea.
In order to meet growing demand of the subsea cable in the region backed by governments' policies to increase renewable generation capacity, Sumitomo Electric is committed to provide reliable and robust cable systems to the market.

500 kV AC-XLPE Project in Japan

Sumitomo Electric supplied a total 120 km of AC 500 kV XLPE cables to Shinkeiyo- Toyosu project in metropolitan Tokyo area. It was the world's first project to adopt 500 kV XLPE cable technology for long distance transmission line and has been in operation since 2000.

HVAC XLPE Triplex Cable Projects in the U.S.

In order to solve oil-leak problems with existing Pipe Type Fluid Filled cables, we have developed and propose to customers the use of our unique patented XLPE Triplex cable design. Such an innovative cable technology has been developed through a number of consultation process with the customers who seek such solutions.