What happened

Balfour Beatty has been confirmed as National Grid's contractor to build what is expected to become Britain's largest electricity substation, on roughly 73 acres of land at Dorman Point within the Teesworks site on Teesside. Trade press including Construction Enquirer and The Construction Index report the job is worth more than £200m and sits inside National Grid's Great Grid Upgrade, the multi-billion pound programme to expand transmission capacity across England and Wales.

The site sits directly beneath existing 275kV and 400kV overhead lines, which is a large part of why it was chosen. Teesworks will spend around six months on land remediation and preparation before handing the site to National Grid. The first phase of the new substation, carrying 1,440MVA of capacity, is due to come online by the end of 2029. A further slice of capacity at the site has already been contracted to Steel River Power, which runs the private electricity network serving the wider Teesworks estate.

Why it matters

This is a single, very large civils and electrical job rather than one lot on a framework, and it lands in a region that has spent a decade rebuilding an industrial identity around Teesworks, offshore wind and now grid infrastructure. Substations of this scale are rare: most of the current National Grid pipeline is repair, maintenance and smaller upgrade work spread across dozens of contractors on regional frameworks. A new-build project of this size, with a fixed capacity target and a 2029 energisation date, gives Balfour Beatty and its supply chain several years of visible, well-funded work in one place.

It also says something about where the grid money is actually going. Teesside's substation is being built to serve new industrial and data demand connecting into Steel River Power's network, not just to replace ageing kit. Expect more projects like this as the Great Grid Upgrade moves from paperwork to steel in the ground.

What it means for careers and hiring

Balfour Beatty's North East Power T&D team is already recruiting for this kind of work: project managers with experience delivering 132kV to 400kV substations for National Grid, commissioning managers, and control-and-protection designers, all based in or around Teesside with travel to site. Expect that list to grow once construction starts in earnest, pulling in civil engineers, electrical fitters and SHE advisers with high-voltage experience.

For quantity surveyors and commercial staff, a single £200m project with a hard 2029 deadline is a different proposition from framework-lot work: fewer but bigger packages, more exposure to National Grid's own commercial terms, and a long enough run to build a proper track record in power transmission rather than one-off substation refurbishments. Anyone with grid, nuclear-adjacent or heavy industrial experience based in or willing to relocate to the North East should have this one on their radar, and recruiters covering the region's energy sector should expect Balfour Beatty's Power T&D business to be a steady source of senior roles through the rest of the decade.