Global transmission line length was estimated to have reached 5,465,957Ckm by the end of 2021 and is forecasted to grow to 6,485,343Ckm by 2027. The UK had 26,330Ckm of line length in 2021 and this is expected to rise to 26,826Ckm by 2027. Listed below are the five largest transmission projects by line length in the UK, according to GlobalData’s power database. GlobalData uses proprietary data and analytics to provide a complete picture of the global transmission line segment. Buy the latest transmission line project profiles here.

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1. Bramford – Twinstead Tee Line

The Bramford – Twinstead Tee Line is a 400kV overheadBramford to Twinstead. The project is proposed and is expected to be commissioned in 2028.

The Bramford – Twinstead Tee Line is an overhead line that will be operated by National Grid. The line will carry alternating current (AC) through double circuit cable. Buy the profile here.

2. Norwich Tee – Bramford Line

The Norwich Tee – Bramford Line is a 400kV overheadNorwich to Bramford. The project is planned and is expected to be commissioned in 2025.

The Norwich Tee – Bramford Line is an overhead line that will be operated by National Grid. The line will carry alternating current (AC) through double circuit cable. Buy the profile here.

3. Stalybridge – Thorpe Marsh Line

The Stalybridge – Thorpe Marsh Line is a 400kV overhead line with a length of 5Ckm running from Stalybridge to Thorpe Marsh. The project is under construction and is expected to be commissioned in 2023.

The Stalybridge – Thorpe Marsh Line is an overhead line that will be operated by National Grid. The line will carry alternating current (AC) through double circuit cable. Buy the profile here.

4. Sundon – Cowley – Elstree Line

The Sundon – Cowley – Elstree Line is a 400kV overheadSundon to Elstree. The project is planned and is expected to be commissioned in 2024.

The Sundon – Cowley – Elstree Line is an overhead line that will be operated by National Grid. The line will carry alternating current (AC) through double circuit cable. Buy the profile here.

5. Thornton Bridge – Torness Line

The Thornton Bridge – Torness Line is a 400kV overheadThornton Bridge. York to Torness Nuclear Power Station, Dunbar. The project is under construction and is expected to be commissioned in 2023.

The Thornton Bridge – Torness Line is an overhead line that will be operated by SP Transmission. The line will carry alternating current (AC) through double circuit cable. Buy the profile here.

For more details on the latest transmission line projects, buy the project profiles here.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData’s Power Intelligence Center provides detailed profiles of over 170,000 active, planned and under construction power plants worldwide, while its capacity and generation database provides historic and forecast power generation and generation capacity by technology as well as consumption, imports and exports for over 170 countries.