Shetland – Mainland Scotland HVDC Line is a 320kV underground line with a length of 257km from Shetland, Shetland, UK, to Mainland Scotland, Scotland, UK.

The project, which is currently in the planning stage, is expected to be commissioned in 2024.


Shetland – Mainland Scotland HVDC Line is an underground line that will be operated by Scottish Hydro Electric Transmission. The line will carry direct current (AC) through double circuit cable.

Shetland – Mainland Scotland HVDC Line project development status

The construction works on the Shetland – Mainland Scotland HVDC Line project will be commenced in 2021 and commissioning is expected in 2024.

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Contractors involved

Hitachi ABB Power Grids, NKT and Tulloch Civil Engineering was appointed by Scottish Hydro Electric Transmission to undertake the construction works on the Shetland – Mainland Scotland HVDC Line project.

About Scottish Hydro Electric Transmission

Scottish Hydro Electric Transmission Limited (SHETL) is an electric transmission company. Southern Electric Power Distribution (SEPD), Scottish Hydro Electric Power Distribution (SHEPD) and Scottish Hydro Electric (SHE) Transmission plc together make up the Scottish and Southern Energy Power Distribution which is part of the SSE group. SSE is a FTSE 100 company and is among the good number valued energy companies in the UK. Its services include generation, transmission, distribution and supply of electricity and also deal with energy trading; energy services; gas storage; the distribution and supply of gas; electrical and utility contracting; and telecoms.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.