SSEN Transmission has reached a major construction milestone in its ongoing works on a multi-million-pound power line development in Scotland.

The work, which saw the first towers installed in the new development between Port Ann to Crossaig, is part of SSE's £12.5bn Net Zero Acceleration Programme.

The first two of 149 steel towers have been installed for the replacement overhead line which will span across 45km between Lochgilphead and Crossaig Substation. Teams have also made great progress with the installation of 48km of access track and 21 of the tower foundations as part of the ongoing project.

The project is the second phase in the wider Inveraray to Crossaig powerline upgrade, with the first phase – Inveraray to Port Ann – energised in July 2021.

The new power line will replace the existing infrastructure in the area, which was originally built in the 1950s and is now reaching the end of its operating life. The new replacement power line will provide a new robust and reliable transmission network across the region and will serve as one of the transmission network's main arteries in the west of Scotland. It is one of the most significant electricity network investment in the region in decades.


Once complete, the powerline will operate at 132kV with the capacity to be upgraded to 275kV in the future, forming a key part of SSEN Transmission's Argyll 275kV strategy. This will see the electricity transmission network in the region reinforced to enable the connection of over 600 MW of new renewable generation, playing a key role in the transition to net zero emissions and the fight against the climate emergency.

David Auld, Project Manager for SSEN Transmission, said: "This is a major milestone in our ongoing project between Port Ann and Crossaig, and I'm delighted to see the first of 149 towers installed as part of this highly complex engineering project."

David continued: "This is the second phase of the major Inveraray to Crossaig overhead line reinforcement project, and once complete, it will not only provide a more resilience transmission network in Argyll, but also provide increased capacity to allow more renewable electricity generation to be connected to the grid – allowing clean energy to be transported to where it is needed most and assist in the fight against the climate emergency.

"As a stakeholder-led business we've been working closely with the local community and stakeholders to share information with them about the project and to help mitigate the impacts of our activities, and we thank them for their continued patience and understanding as we deliver this critical national infrastructure which will serve the region for many decades to come."