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    ContractsElectrical Power Distribution Network Design for Tunnel Construction Site
    Closed contract

    Electrical Power Distribution Network Design for Tunnel Construction Site

    Contract value
    £100k
    Closed 18 Aug 2026

    Design and deliver a complete electrical power distribution system including HV/LV networks, substations, and site lighting for a major tunnel construction project in compliance with British electrical standards.

    🇬🇧United KingdomPublished 10 Aug 2026· 1 months agoviaContracts Finder
    Contract value
    £100k
    Closed 18 Aug 2026
    Tender deadline passed on 18 Aug 2026.

    Decision brief

    4 fields
    • Contract value
      est.£100,000
      Pounds sterling
    • Tender closed
      18 Aug 2026
      1 months ago
    • Sector
      Engineering
      Browse related listings
    • Location
      🇬🇧United Kingdom

    Lifecycle

    Closed

    Tender closed on 18 Aug 2026. Awaiting award.

    10 Aug 2026Today18 Aug 2026

    Brief

    This opportunity involves designing a comprehensive high voltage (HV) and low voltage (LV) electrical distribution network to support tunnel construction operations at the Sizewell site. The network must safely distribute power across multiple construction areas including the Tunnel Launch Compound, construction zones, and ancillary areas to serve both underground equipment (tunnel boring machines, slurry systems, ventilation, lighting) and overground facilities (cooling systems, cranes, batching plants, office buildings). The design must comply with current British electrical safety standards and includes four key deliverables: (1) HV network design for the 11kV distribution system with switchgear, cable sizing, routes, and protection settings; (2) Substation design and specification including earthing systems and transformers to convert power to required voltage levels (690V/400V); (3) LV network design for equipment distribution with appropriate switchgear, cable routes, and circuit protection; and (4) Site lighting design to ensure adequate illumination for all construction activities. All designs must be delivered as Stage 4 drawings with schematics and must be coordinated with the site team to ensure compatibility with the wider site electrical infrastructure. Electrical load details will be provided by the client.

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    View on sourceContracts Finder

    Original closed notice on the publisher's site

    Publisher
    UK Cabinet Office
    Licence
    OGL v3.0
    Source
    contractsfinder.service.gov.uk
    Record ID
    8b23e699-4fcd-43eb-b901-a40d77868aeb-910065
    SC
    Buyer
    SIZEWELL C LIMITED
    Sector
    Engineering