By Liam FosterNational Grid Electricity Transmission finalized a landmark agreement announced in early November 2026 to purchase 73.3 acres at the Teesworks industrial site in Teesside, England, to build the United Kingdom’s largest electrical substation. The high-voltage facility will unlock up to 3.2 gigawatts of capacity for a planned artificial intelligence data center and clean energy hub.
Located at Dorman Point on the south bank of the River Tees near Redcar, the 29.5-hectare parcel sits directly beneath existing 275-kilovolt and 400-kilovolt overhead transmission lines. Teesworks, Europe’s largest brownfield industrial regeneration zone, will complete six months of site remediation and ground preparation before transferring the land to the transmission operator. The purchase agreement was formally signed on October 28 and publicly disclosed across November 1 and November 2, 2026.
Designated as Teesside Node A, the proposed 400-kilovolt substation will be constructed by infrastructure contractor Balfour Beatty as a flagship component of the utility’s multi-billion-pound Great Grid Upgrade program. An initial 1,440 megavolt-amperes—or 1.44 gigawatts—of capacity is scheduled to come online by the end of 2029, matching the combined electricity consumption of Greater Manchester and Glasgow. That initial supply is contracted to Steel River Power, which owns and operates the estate’s private electricity distribution network and plans to expand site-wide capacity up to 3.2 gigawatts.
Powering Sovereign AI and Data Center Infrastructure
A primary driver behind the substation investment is a proposed hyperscale artificial intelligence data center campus spanning roughly 462,000 to 500,000 square meters on the former Redcar steelworks site. The British government designated the Teesside industrial estate as a priority AI Growth Zone in 2025 to attract international cloud computing and digital Business investment. Redcar and Cleveland Borough Council approved reserved planning matters for the facility in August 2025, and competing land claims ended in December 2025 when BP withdrew its proposed H2Teesside blue-hydrogen plant.
Tees Valley Mayor Ben Houchen emphasized that securing rapid, high-capacity power connections remains the biggest obstacle for developers building data centers and advanced manufacturing plants across Britain. He noted that delivering 1.44 gigawatts initially and scaling to 3.2 gigawatts allows northeastern England to compete directly with major technology hubs in the United States, Europe, and the Middle East. Hosting sovereign computing infrastructure domestically, he added, will keep sensitive data stored securely on British soil while creating skilled regional jobs.
Expanding the Industrial and Clean Energy Grid
Prior to securing the new transmission capacity agreement in 2024, Steel River Power operated an existing 360-megavolt-ampere private distribution network at Teesworks, with roughly 200 megavolt-amperes available to commercial tenants. The expanded grid connection will support utility-scale battery energy storage systems, clean energy generation, and power-intensive advanced manufacturing facilities across the industrial zone. Teesworks Chairman Chris Musgrave described the land agreement as a vital milestone in putting the electrical infrastructure in place to support decades of industrial growth.
Matt Pearce, Head of Land at National Grid, said the Dorman Point acquisition reflects constructive collaboration between public and private partners to accelerate critical energy infrastructure. The Teesside build-out complements parallel high-voltage investments across England, including major capacity upgrades at the Didcot substation in Oxfordshire and construction at the 1.8-gigawatt Uxbridge Moor substation in Buckinghamshire. Together, these transmission hubs aim to clear Britain’s grid connection backlog as expanding artificial intelligence workloads drive record national electricity demand.
