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100572 Walpole SGT4 Tertiary Connection

NATIONAL GRID ELECTRICITY TRANSMISSION PLC

This public procurement record has 1 release in its history.

Award

13 Oct 2026 at 15:31

UK6 - Contract Award Notice
Summary of the contracting process

National Grid Electricity Transmission plc commissioned completion of the remaining design and infrastructure works for the Walpole SGT4 Tertiary Connection project. The work is substation construction: installing a tertiary cable box on SGT4, a 13kV transformer and disconnector, earthing switches, support structures, busbars and connectors. It also covers protection and control, substation control and ancillary systems, 13kV cabling and terminations, low-voltage AC and DC connections, testing and commissioning, and civil engineering. The contractor must commission interfaces with the connection assets and National Grid’s transmission system. The project is associated with Walpole; the stated delivery coverage spans England. National Grid Electricity Transmission is the buying organisation, and the procurement was treated as utility-sector works.

The procurement is complete and the contract was awarded on 13 October 2026 to OCU Utility Services Limited. The award value is £4,173,518.32 including VAT. The contract period runs from 26 October 2026 to 15 March 2028. The tender used a selective competitive flexible procedure and was divided into one lot, which is complete. The award is active. The process relates to a framework, with this procurement associated with lot 2 of that separate framework. The available award information does not state the evaluation criteria, so the basis for selecting the supplier cannot be described. A future contract signature was scheduled for 23 October 2026; the award information does not establish whether signature subsequently took place.

This award demonstrates demand from National Grid Electricity Transmission for integrated high-voltage substation construction and connection works. A credible competitor for a similar requirement would need to deliver electrical design and infrastructure installation alongside civil engineering, including transformer and disconnector installation, earthing, busbars, cable systems and protection and control equipment. The scope also calls for testing, commissioning and management of interfaces with connection assets and the transmission network, so suppliers need the technical coordination and commissioning capability to bring multiple substation systems into service. The awarded package is substantial and combines specialist electrical works with supporting infrastructure rather than a single equipment supply. OCU Utility Services Limited was selected for this requirement. The procurement used a selective competitive flexible procedure under a framework-related process. It indicates the type of delivery capability National Grid engaged for this project.»

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Notice Information

Notice Title

100572 Walpole SGT4 Tertiary Connection

Notice Description

The works comprise the completion of the remaining design & infrastructure works required for the Walpole SGT4 Tertiary Connection Project, including installation of a tertiary cable box on SGT4, a 13kV transformer, a 13kV disconnector and associated earthing switches, supporting structures, busbars and connectors, protection and control systems, substation control and ancillary systems, 13kV cable systems and terminations, LVAC and DC connections, testing and commissioning, interface commissioning with connection assets and the National Grid transmission system, and all associated civil engineering works.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-0786cb
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/096662-2026
Current Stage
Award
All Stages
Award

Procurement Classification

Notice Type
UK6 - Contract Award Notice
Procurement Type
Standard
Procurement Category
Works
Procurement Method
Selective
Procurement Method Details
Competitive flexible procedure
Tender Suitability
Not specified
Awardee Scale
Large

Common Procurement Vocabulary (CPV)

CPV Divisions

45 - Construction work

CPV Codes

45232220 - Substation construction work

Notice Value(s)

Tender Value
Not specified
Lots Value
Not specified
Awards Value
£4,173,518 £1M-£10M
Contracts Value
Not specified

Notice Dates

Publication Date
13 Oct 20261 weeks ago
Submission Deadline
Not specified
Future Notice Date
Not specified
Award Date
13 Oct 20261 weeks ago
Contract Period
26 Oct 2026 - 15 Mar 2028 1-2 years
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Complete
Awards Status
Active
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
NATIONAL GRID ELECTRICITY TRANSMISSION PLC
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
LONDON
Postcode
WC2N 5EH
Postcode Area
Central London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI3 Inner London - West
Small Region (ITL 3)
TLI35 Westminster and City of London
Delivery Location
Not specified
Local Authority
Westminster
Electoral Ward
St James's
Westminster Constituency
Cities of London and Westminster

Supplier Information

Number of Suppliers
1
Supplier Name

OCU UTILITY SERVICES LIMITED

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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