XLPE cables

By Crossing Borders, HVDC XLPE Cable Brings the Future of Electricity to People Around the World.

Sumitomo Electric’s track record in winning contracts and instal ling DC XLPE cables (as of April 2022)

Sumitomo Electric’s track record in winning contracts and instal ling DC XLPE cables (as of April 2022)
Sumitomo Electric’s track record in winning contracts and instal ling DC XLPE cables (as of April 2022)
Hokkaido-Honshu HVDC Link

①Hokkaido-Honshu HVDC Link

World’s highest voltage DC XLPE cables as of 2012

Awarded in 2009
completed in 2012
highest voltage ±250 kV

New Hokkaido-Honshu HVDC Link
New Hokkaido-Honshu HVDC Link

②New Hokkaido-Honshu HVDC Link (Hokuto-Imabetsu DC Trunk Power Line)

World’s longest extra-high voltage cables installed in a subsea tunnel across a strait

Awarded in 2015
completed in 2019
highest voltage +250 kV

U.K.-Belgium interconnector (±400 kV)

③U.K.-Belgium interconnector (NEMO project)

World’s highest voltage DC XLPE cables at DC 400-kV in commercial operation

Awarded in 2015
completed in 2019
highest voltage ±400 kV

Extra-high voltage DC power transmission cable system in India
Extra-high voltage DC power transmission cable system in India

④Extra-high voltage DC power transmission cable system in India (PK2000)

First extra-high voltage DC power transmission cables in India

Awarded in 2017
completed in 2021
highest voltage ±320 kV

Extra-high voltage DC power transmission cable system in Germany

⑤Extra-high voltage DC power transmission cable system in Germany (A-Nord project)

World’s highest voltage DC XLPE cables under construction

Awarded in 2020
to be completed in 2028
highest voltage ±525 kV

Germany-Denmark interconnector

⑥Germany-Denmark interconnector (KONTEK)

World’s first system adopted with the combination of Line Commutated Converters and 400-kV-class DC XLPE cables

Awarded in 2021
to be completed in 2023
highest voltage ±400 kV

U.K.-Ireland interconnector

⑦U.K.-Ireland interconnector (Greenlink project)

Load leveling through interchange of renewable energy between countries

Awarded in 2021
to be completed in 2024
highest voltage ±320 kV

Extra-high voltage DC power transmission system in UAE

⑧Extra-high voltage DC power transmission system in UAE (Project Lightning)

First extra-high voltage DC XLPE cables to be used in the Middle East

Awarded in 2022
to be completed in 2025
highest voltage ±400 kV

Renewable energy and DC power transmission cables Just like two wheels of a cart toward decarbonization

Electricity is supplied while constantly balancing the power generation amount with consumption. Supply must not be lower than demand, but oversupply must also be avoided. Stable supply is maintained when a necessary and sufficient amount of electricity is generated. These are the unique characteristics of this energy.

This is why renewable energy, whose power generation amount depends on the weather conditions, poses difficulties. Power generation and consumption in a region inevitably results in unstable electric power supply. However, if many power generation systems are linked via an interconnected grid in a large area to secure a large supply amount, the surplus electricity in a consumption area can be delivered to a different consumption area where electricity is in short supply. In addition, renewable power plants, including offshore wind farms, are located in remote areas. For these reasons, HVDC cables that can withstand large-capacity long-distance power transmission are definitely required to realize a decarbonized society.

In Europe, a project is underway to build an offshore wind power generation facility called “energy island” in the North Sea and the Baltic Sea and share electric power with neighboring countries. Obviously, DC interconnectors will be reinforced, and the international grid will be further expanded.

Renewable energy and DC power transmission cables are just like two wheels of a cart to lead the world to carbon neutrality.

Mission as a specialist of DC power transmission cables

Such a project is not limited to Europe. In COP26, India, which had not mentioned any specific numerical target, announced that it would increase the percentage of renewable energy to 50% by 2030. In India, an interconnector for which Sumitomo Electric manufactured and installed, an HVDC XLPE cable of ±320 kV went into operation in 2021. Multiple projects are underway in various parts of the world to newly install and expand interconnectors. The number of inquiries that Sumitomo Electric receives has been increasing year after year. The advent of the era of carbon neutrality, where the global community is linked by interconnectors, is getting closer to reality.

Yasuyuki Shibata, Managing Executive Officer and General Manager of the Social Infrastructure Sales & Marketing Unit, who supervised various interconnector projects in and outside Japan, talked about the pride of a manufacturer in a growing market toward a decarbonized society.

Yasuyuki Shibata Managing Executive Officer and General Manager of the Social Infrastructure Sales & Marketing Unit
Yasuyuki Shibata / Managing Executive Officer and General Manager of the Social Infrastructure Sales & Marketing Unit

“Realization of a decarbonized society is an imminent issue. Manufacturers, including Sumitomo Electric, can resolve issues by offering technologies and products. Notably, DC power transmission cables are indispensable to promote the widespread use of renewable energy. Our DC XLPE cables were derived from about 30 years of persevering research and in-house development based on materials technology. This is an unparalleled product that embodies our identity. It is my greatest pride to underpin our society by harnessing this technology,” said Shibata.

Shibata continued to express his commitment to carbon neutrality with enthusiasm.

“We will work on carbon neutrality based on the belief that we will achieve it. We will continue to further improve the quality of products and expand production facilities. We hope to establish a reputation in the global market by taking full advantage of our expertise and contributing directly to a decarbonized society,” said Shibata.

As a key player in the global arena, Sumitomo Electric has already been taking on challenges to deliver as many DC XLPE cables as possible and lead the world to a sustainable future.