The event brought together project partners, elected representatives and key stakeholders at the Lewis Hub site at Arnish Moor near Stornoway, followed by a stakeholder reception at the Cabarfeidh Hotel showcasing the project and its wider benefits.

The Lewis Hub, comprising a high-voltage direct current (HVDC) converter station and AC substation, will form a central part of the wider Western Isles Connection. Once operational, the connection will enable up to 1.8GW of renewable electricity generation to connect to the national transmission network, while strengthening the long-term resilience and security of electricity supplies in the islands.

The groundbreaking marks the project’s progression from initial site preparation into main construction. This week, Highlands-based civil engineering contractor RJ McLeod signed a contract to deliver the first major package of construction works that will prepare the site for the HVDC converter station, AC substation and associated infrastructure.

As construction progresses, Balfour Beatty, Linxon, Hitachi Energy and NKT will work alongside SSEN Transmission to deliver key elements of the wider programme.

Sandy Mactaggart, director of offshore delivery at SSEN Transmission, said: “Breaking ground on the Lewis Hub is a hugely significant moment for the project and for the Western Isles.

“A direct connection between the Western Isles and the main GB transmission network has been an ambition for decades. Through the Lewis Hub and wider Western Isles Connection, we are now turning that ambition into reality, unlocking the islands’ vast renewable energy potential and strengthening the electricity network for generations to come.

“But our ambition is about much more than delivering new infrastructure. We want this investment to create a lasting legacy for the islands, supporting local infrastructure, developing skills and creating opportunities for local businesses, while working with key partners to find mutually beneficial solutions that support long-term economic growth.

“I’d like to thank the local community for their support and engagement throughout the development of the project, and everyone who has taken the time to speak to us and share their views. We look forward to continuing that relationship as construction progresses.”

Robert van Beek, managing director of RJ McLeod, said: “RJ McLeod is delighted to be working with SSEN Transmission to deliver the first phase of the Lewis Hub Western Isles Link, a project of national importance that will support both the energy transition and the UK’s long-term energy security.

“For more than half a century, we have worked across the Western Isles, building strong and enduring relationships within local communities and with regional businesses. We look forward to working in partnership with them once again to successfully deliver this significant project for SSEN Transmission.”

Cllr Kenny Macleod, convener of Comhairle nan Eilean Siar, said: “Groundbreaking at the Lewis Hub project is a significant and welcome milestone for the project.

“Major renewable developments have the potential to bring significant and lasting investment to our islands which will be made possible thanks to the 1.8GW interconnector and associated infrastructure. It is particularly welcome that this project is already bringing an economic boost to our islands with the use of local subcontractors and the direct employment of apprentices and professionals.

“Comhairle nan Eilean Siar will continue to work to ensure that the significant investment in energy infrastructure on our islands sees real benefits for those that live here and the services that they rely on.”