Major Projects Partnership - Preliminary Market Engagement

National Grid hereby informs the market of an upcoming opportunity and to identify suppliers that may be able to supply the works required for the Major Projects Partnership and the Major Projects QUDM it will be called off from. This will include primarily 33 to 132kV Substation Construction, Underground Cabling and Overhead Tower Line Construction and Overhead Wood Pole Line Construction works. ED3 (Electricity Distribution 3) refers to the next five-year electricity distribution price control period (2028-2033), set by Ofgem, which will determine how distribution network operators (DNOs) plan and invest in Britain's electricity system. It is important because it will shape the scale, pace and delivery of network upgrades needed to support growing demand, connect new generation, and enable the transition to low carbon technologies, while ensuring services remain reliable, affordable, and responsive to customer needs. Delivery will involve close collaboration with key partners, who will play a vital role in enabling investment in infrastructure, innovation and network resilience to meet the needs of customers and communities over the coming period. Substation Construction Works under Substation Construction comprise of the following indicative list, specific to working within a live high-voltage (primarily 33 to 132kV) distribution network substation environment, with a typical project estimated between £200,000 and £5million: Procurement and supply chain management Subcontractor management Civil engineering Protection and control systems installation, configuration and commissioning Mechanical and electrical installation, testing and commissioning An indicative list of work types is as follows: New Build AIS/GIS AIS/GIS Substation Extension Major AIS/GIS Substation Asset Replacement Operators may be required to procure products that are to be selected from a list of suppliers that has been pre-approved by National Grid, to accept free-issue equipment and services