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L3/L4 Substation works

Science Museum Group

This public procurement record has 3 releases in its history.

TenderUpdate

19 Aug 2026 at 15:33

UK4 - Tender Notice
TenderUpdate

03 Aug 2026 at 15:32

UK4 - Tender Notice
Tender

03 Aug 2026 at 14:28

UK4 - Tender Notice
Summary of the contracting process

The Science Museum Group is procuring works to upgrade the DSS04 L3/L4 substation at its Science and Innovation Park on Hackpen Lane, Wroughton, Swindon. The requirement covers replacement and upgrading of the transformer, together with associated substation compliance works. This is an electrical and power infrastructure project, including substation construction and transformer installation. The works are for the Science Museum Group’s site in Wroughton and are intended to bring the substation up to the required compliance standard. The procurement is categorised as works and concerns a single package covering the described substation upgrade. The specification provides the detailed technical requirements for the transformer replacement, upgrade works and associated compliance activity.

The process reached tender: the Science Museum Group invited offers through a below-threshold open competition. It concerns one lot, with an estimated value of £170,000 excluding VAT and £204,000 including VAT. The contract period set by the buyer runs from 1 September 2026 to 27 November 2026. Suppliers could submit enquiries until 14 August 2026 at 17:00, and bids were due by 8 September 2026 at 15:00. Electronic submission was allowed. The published award basis directs suppliers to the tender documents for the evaluation criteria. The procurement is below the applicable threshold and uses an open procedure, so eligible suppliers were invited to compete without a prior shortlisting stage.

This opportunity suits electrical contractors and specialist power infrastructure firms able to deliver substation upgrade works, transformer replacement and associated compliance activity. Relevant suppliers are likely to have practical experience working on substations, transformer installations and electrical infrastructure in operational or specialist sites. The work may also suit firms that can manage the full delivery package, including coordination of equipment replacement, installation activities, testing, commissioning and compliance-related works where these are required by the specification. Businesses should be able to interpret the technical tender specification, plan a short works programme and provide competent resources for substation and transformer work. Contractors with established supply chains for transformer equipment and experience managing safety, quality and site-interface requirements are well placed to assess and compete.

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Notice Information

Notice Title

L3/L4 Substation works

Notice Description

SMG wishes to award a contract for the provision of L3/L4 Substation Upgrade Works (DSS04) at the Science and Innovation Park, Hackpen Lane, Wroughton, Swindon. The Agreement concerns below threshold works comprising the replacement and upgrade of DSS04 transformer and associated substation compliance works. Please see Section 3: Specification for further information about this requirement.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-06da16
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/079116-2026
Current Stage
Tender
All Stages
Tender

Procurement Classification

Notice Type
UK4 - Tender Notice
Procurement Type
Standard
Procurement Category
Works
Procurement Method
Open
Procurement Method Details
Below threshold - open competition
Tender Suitability
Not specified
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

45 - Construction work

CPV Codes

45232220 - Substation construction work

45317200 - Electrical installation work of transformers

Notice Value(s)

Tender Value
£170,000 £100K-£500K
Lots Value
£170,000 £100K-£500K
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
19 Aug 20261 months ago
Submission Deadline
8 Sep 2026Expired
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
1 Sep 2026 - 27 Nov 2026 1-6 months
Recurrence
Not specified

Notice Status

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

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
Science Museum Group
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
SW7 2DD
Postcode Area
South West London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI3 Inner London - West
Small Region (ITL 3)
TLI33 Kensington & Chelsea and Hammersmith & Fulham
Delivery Location
Not specified
Local Authority
Kensington and Chelsea
Electoral Ward
Brompton & Hans Town
Westminster Constituency
Kensington and Bayswater

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

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