SP Energy Networks has announced a £1.4 billion investment programme to upgrade onshore transmission infrastructure across central and southern Scotland, as part of a broader effort to strengthen the UK’s electricity network and support the transition to cleaner energy.
The projects form part of a wider £5.4 billion supplier initiative set to roll out over the next decade. The upgrades are intended to improve grid capacity for new housing developments, industrial activity, and low-carbon energy projects, while also enhancing national energy security.
“This is a defining moment for our energy future,” said Nicola Connelly, chief executive of SP Energy Networks. “These contracts are not just about infrastructure—they’re about enabling a cleaner, greener Britain.”
The work includes the development of new high-voltage substations, overhead transmission lines, and associated engineering and construction. Of the 19 suppliers selected, 17 are UK-based. Morgan Sindall Infrastructure has been appointed the sole contractor for the Denny to Wishaw Network Optimisation project.
The contracts are initially set for five years, with the option to extend to ten, offering long-term stability for suppliers and supporting workforce development and innovation.
“This is the clean power transition in action—investing in British supply chains that will bring skilled jobs and economic growth to communities in Scotland and beyond,” said UK Energy Minister Michael Shanks.
The announcement comes after parent company ScottishPower committed to doubling UK investment to £24 billion by 2028, with around two-thirds allocated to electricity networks.
SP Energy Networks said it will submit its business plan for the 2026–2031 regulatory period to Ofgem later this year.
