Published date: 2 October 2025

Closed opportunity - This means that the contract is currently closed. The buying department may be considering suppliers that have already applied, or no suitable offers were made.


Closing: 14 October 2025, 12pm

Contract summary

Industry

  • Electric motors, generators and transformers - 31100000

  • Switches - 31214100

Location of contract

West Midlands, London, South East

Value of contract

£5,000,000 to £10,000,000

Procurement reference

C4N100286950

Published date

2 October 2025

Closing date

14 October 2025

Closing time

12pm

Contract start date

31 May 2027

Contract end date

30 April 2028

Contract type

Supply contract

Contract is suitable for SMEs?

Yes

Contract is suitable for VCSEs?

No

Description

Scope/ What Will Be Required

Costain have been appointed to deliver contract HRS02, the Tunnel and Lineside Mechanical and Electrical services for HS2 ltd. A high-speed railway project that connects London to Birmingham with plans to extend in the future.


Package 4 the transformers, switches and sockets scope associated to contract HRS02 consists of supply of transformers, switches and sockets for the tunnel and open route sections of the railway, the route being circa 180 km in length, inclusive of;

-Sockets and Transformers 110v - 230v
-Sockets and Transformers 400v - 690v
-Maintenance Transformers
-ATS Isolators
-ATS Isolator Switches
-Auto Transformer Switches
-Isolation Transformers

Costain require a supplier for supply only of the Transformers, Switches and Sockets package. Costain and HS2 are looking for innovative and smart solutions that provide benefits in the following key areas;

-Health & Safety
-Programme - Installation and commissioning efficiency
-Cost
-Quality and Assurance efficiency
-Whole life cost
-Carbon efficiency

The scope of supply will include the following;

-Supply of Sockets and Transformers
-Supply of Isolators
-Supply of Auto Transformer Switches
-Provision of samples and mock ups

Full details of the scope and specifications will be provided to the successfully shortlisted suppliers. Suppliers should be aware of the scale of the HS2 project and are to assess their internal capabilities to be able to carry out the intended scope of works prior to completing the expression of interest.

More information

Links

About the buyer

Contact name

David Smith

Address

70 St. Mary Axe
London
EC3A8BE
UK

Telephone

+447921243727

Email

david.smith3@workingwithcostain.com