Caithness – Moray HVDC Line is a 320kV underground line with a length of 160km from Spittal, Caithness, Scottish Highlands, UK, to Blackhillock, Moray, Scottish Highlands, UK.

Construction works on the Caithness – Moray HVDC Line started in 2016 and the project was commissioned in 2018.


The Caithness – Moray HVDC Line, which is an underground line, is being operated by Scottish Hydro Electric Transmission. The Caithness – Moray HVDC Line is a new line. The line carries direct current (AC) through double circuit cable.

Approximately $1,181.13m was financed by the authorities to undertake the construction works of the project.

Caithness – Moray HVDC Line project development status

The development of the Caithness – Moray HVDC Line project was approved by The Office of Gas and Electricity Markets in 2016 and the project works were completed in 2018.

Contractors involved

ABB was appointed by Scottish Hydro Electric Transmission to supply the cables for executing the 320kV Caithness – Moray HVDC Line.

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.