Beauly Denny 400kV Overhead Line Construction

From project inception, we worked with engineering and management teams to design and fabricate almost 9,000 tonnes of steel for use in power transmission towers.

  • 200km

    of overhead lines

  • 355 steel

    To withstand extreme temperatures

  • 9000 tonnes

    of steel

  • 35˚ steep

    hillsides with masts

  • Connecting

    renewable energy sources to central Scotland


The route of the new overhead line crosses the Grampian Mountains and Scottish Highlands. This meant that the design of the steel towers would need to be suitable for them to be installed on mountainsides with angles up to 35 degrees. With some locations at up to 700m above sea level, extreme weather conditions also had to be considered as part of our solution.


We provided the steel for 70 towers that were significantly heavy and had bespoke leg extensions for installation on the steep slopes. To ensure that the towers could withstand extreme weather conditions, we supplied 355 high tensile J2 steel. This ensured that the structural performance of the steel is the same at OC and -20C


Through working closely with the project team to develop solutions for the challenging terrain and environment, we helped them to achieve significant time and financial savings. We successfully designed and fabricated nearly 9,000 tonnes of steel for the construction of the 400kV overhead line towers, ensuring their durability and strength for power transmission.

  • structural steel fabrication - 400kV Overhead Line Construction