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Mobile Transformer Oil Processing Vehicles (Trailer Mounted) - Design, Manufacture, Supply, Commissioning and Support Tender

NATIONAL GRID ELECTRICITY TRANSMISSION PLC

In context

This is a contract notice published by a government body covering construction and works. Delivery covers United Kingdom (Europe). It is classified under Grid Modernization and Energy Efficiency against the sustainability taxonomy rather than matched on keywords.

Summary

National Grid seeks design, manufacture, and supply of two trailer-mounted mobile transformer oil processing vehicles with integrated vacuum systems, power generation, and SCADA controls for UK substations and construction sites. Bidders must have specialized expertise in mobile industrial equipment design, transformer oil treatment systems, and integration of complex electromechanical and automation systems.

Summary by Raise Lens from the official notice · 25 Oct 2026Accurate?

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About this tender

National Grid Electricity Transmission (NGET) seeks a supplier to design, manufacture, supply, commission and support two (2) fully integrated, trailer-mounted mobile transformer oil processing vehicles, with an option to purchase up to two (2) additional equivalent units. The solutions must be road-legal, self-contained and suitable for deployment at operational substations and construction sites throughout the UK. Deliverables include design, manufacture, testing, supply and delivery of two mobile transformer oil processing trailers with minimum oil processing capability of 7,500 litres/hour at 50°C; integrated vacuum systems for transformer and chamber vacuum treatment; onboard power generation system with generator and fuel storage; monitoring, control and automation systems with PLC/SCADA functionality and remote-access capabilities; welfare facilities and environmental controls; all required safety, fire protection and environmental protection systems in accordance with UK legislation and industry standards; Factory Acceptance Testing (FAT), Site Acceptance Testing (SAT), commissioning and performance demonstration; complete technical documentation, operating manuals, maintenance schedules, drawings and software licences; operator and maintainer training; warranty support and after-sales service for the asset lifecycle. Expected outcome is two fully operational mobile transformer oil treatment and vacuum processing vehicles enabling safe, reliable and efficient transformer oil conditioning across the NGET transmission network, with optional procurement of up to two additional equivalent units subject to business requirements, funding approval and satisfactory performance.

Key requirements

  • ✓Design and manufacture two fully integrated trailer-mounted transformer oil processing vehicles with option for two additional units
  • ✓Oil processing capability minimum 7,500 litres/hour at 50°C with filtration, drying, degassing and vacuum processing
  • ✓Integrated vacuum systems for transformer and chamber treatment, independent and simultaneous operation
  • ✓Onboard power generation system with generator, fuel storage and external power changeover facilities
  • ✓PLC/SCADA monitoring, control, automation, process alarms, data recording and remote-access capabilities
  • ✓Welfare facilities, environmental controls, storage and operational workspaces for field personnel
  • ✓Full safety, fire protection, emergency lighting, access and environmental protection systems per UK legislation
  • ✓Factory Acceptance Testing (FAT), Site Acceptance Testing (SAT), commissioning and technical documentation

About this sector

Grid modernisation covers transmission, distribution, smart meters, interconnectors and the software that balances a network with more variable supply. Funding comes as innovation calls for network operators and suppliers as well as large public tenders for equipment and works. Applicants are usually asked to show technical readiness and experience working with regulated network companies.