Eastern Green Link 1 (EGL1) Erects Structural Steel for 2 GW 525 kV Converter Stations at Torness and Murton
Construction on Eastern Green Link 1 (EGL1), the £2.5 billion subsea HVDC superhighway connecting Scotland and England, reached a major engineering milestone...
Eastern Green Link 1 (EGL1) Erects Structural Steel for 2 GW 525 kV Converter Stations at Torness and Murton
Construction on Eastern Green Link 1 (EGL1), the £2.5 billion subsea HVDC superhighway connecting Scotland and England, reached a major engineering milestone with structural steel erection commencing on the VSC converter halls in Torness and Murton.
- Publish date: 2026-09-17
- Category: HVDC & Substations
- Original source: SP Energy Networks & National Grid Electricity Transmission
- Reading time: 5 min
Massive Structural Enclosures for 525 kV Valve Halls
Joint venture partners SP Energy Networks and National Grid have raised the primary steel frames for the 30-meter-high valve halls that will house GE Vernova and Prysmian’s modular multilevel converters (MMC) at Torness (East Lothian) and Murton (County Durham).
The structures are shielded with high-grade electromagnetic interference (EMI) cladding and acoustic dampening panels to isolate high-frequency harmonics generated by the 525 kV converter stacks.
Pioneering Subsea Route and Cable Pull-In Preparations
Concurrently, horizontal directional drilling (HDD) marine landfall ducts have been installed along the North Sea coast, preparing for offshore cable-laying vessels to pull in 190 kilometers of bipole subsea cables in 2027.
EGL1 will transmit 2,000 MW of renewable power, reducing Scottish wind curtailment and saving consumers hundreds of millions in constraint fees.
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