Eastern Green Link 4 has confirmed £3bn of supply chain contracts including awards to Siemens Energy and Prysmian.
The project said Siemens Energy will deliver high voltage direct current converter stations while Prysmian will supply subsea and underground cables under a £2bn contract.
The joint venture between SP Energy Networks and National Grid Electricity Transmission added that the 2GW link will run around 640km between Scotland and England.
The converter stations will be located in Fife and Norfolk to convert electricity between alternating and direct current for transmission.
The subsea link is one of five planned along the east coast to increase network resilience and enable greater renewable energy flows.
Main construction is expected to begin in 2028 with completion scheduled for 2033, subject to planning consent.
“Confirming £3 billion of contract awards demonstrates the scale and momentum behind Eastern Green Link 4 as we move into delivery,” said James Goode, project director of Eastern Green Link 4.
“These agreements not only give us the confidence to progress at pace but also highlight how investment in network infrastructure can and will support UK economic growth, strengthen domestic capability and unlock the capacity needed to transport renewable energy efficiently, supporting both UK energy security and a cleaner energy system.”
“Eastern Green Link 4 is a critical project for strengthening the UK’s electricity network and enabling more renewable power to flow between Scotland and England,” said Darren Davidson, UK vice president for Siemens Energy.
“With more than 7,000 people employed by Siemens Energy across the UK, including at our centre of excellence in Manchester, this project highlights how investment in grid infrastructure supports skilled jobs, energy security and the UK’s long-term transition to a more resilient energy system.”