Project Outline To support the continued growth in onshore and offshore renewable energy across the North of Scotland, and to enable the UK’s transition to Net Zero, significant investment in transmission infrastructure is required to connect generation and transport power to areas of demand. SSEN Transmission’s Accelerated Strategic Transmission Investment (ASTI) and RIIO-T3 frameworks form a key part of the Pathway to 2030 programme, delivering essential upgrades to the high-voltage electricity network. This includes new overhead lines, underground cables, substations, and associated infrastructure to increase capacity, improve resilience, and enable large-scale renewable integration across the north of Scotland. Within this programme, Murphy is delivering a portfolio of transmission infrastructure works, including the design and construction of new 400kV substations at Spittal and Loch Buidhe, overhead line development, and supporting works across both ASTI and T3 schemes. Our early contractor involvement has played a key role in supporting planning consent submissions and shaping efficient, buildable solutions. Through our involvement across the wider framework, Murphy is contributing to a nationally significant programme that is strengthening the UK’s electricity network, enabling renewable energy growth, and supporting long-term energy security and resilience. KEY FACTS Part of SSEN Transmission’s ASTI and RIIO-T3 frameworks, supporting the UK’s Pathway to 2030 programme Scope includes the design and construction of new 400kV substations and supporting the delivery of over 85 km of overhead line (OHL) infrastructure Will enable the connection and transport of large-scale renewable energy from the Highlands to demand centres across the UK
