Eastern Green Link 3, Scotland to Norfolk, England HVDC Link Project-Converters

National Grid Electricity Transmission PLC and Scottish Hydro Electric Transmission PLC (the "Employers") are jointly developing a HVDC link between N Peterhead, Scotland and Norfolk, England (the "HVDC Link"). This notice concerns the procurement and award of contract(s) for: • Design, manufacture, testing, commissioning, trial running, provision of critical spares for two HVDC converter stations located in Scotland and England. • One converter will be located at the Netherton Hub, near Peterhead, Aberdeenshire, Scotland. The other will be located in Norfolk, England. • The converters will each be capable of converting 2GW of AC to DC energy and DC to AC energy. • The two converters will be linked by two no. 2GW capacity 525kV cables, much of which will be routed in the North Sea. • There is an option that it will be routed through a DCSS (DC Switching Station) also to be located within the Netherton Hub • Front-end engineering design services, in relation to any or all of the aforementioned scope. • The Employers will require the Preferred Bidder to enter a Long-Term Service Agreement (LTSA) for the HVDC converter technology, either as part of the main contract or a standalone contracts(s). This may be structured as: 1: a single agreement covering the converters at Netherton Hub and in Norfolk together, with both Employers acting jointly or as a Joint Venture, or; 2: two separate agreements, one with each Employer, covering converters in their respective areas of geographic responsibility individually.