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33kV Substation SCADA Supply

United Kingdom Atomic Energy Authority

This public procurement record has 2 releases in its history.

Tender

21 Sep 2026 at 16:32

UK4 - Tender Notice
Planning

21 Aug 2026 at 14:01

UK2 - Preliminary Market Engagement Notice
Summary of the contracting process

The UK Atomic Energy Authority is buying a complete 33kV substation Supervisory Control and Data Acquisition (SCADA) system for J5 at Culham Science Centre in Oxfordshire. The requirement covers design, manufacture, delivery, installation and commissioning, including an operator workstation in the J5 control room. The new system will replace the existing CODAS, SCADA and programmable logic controller arrangements serving the 400/33kV substation. It must provide site-wide master SCADA control, intelligent interlocking to prevent failures and operational errors, and integration with numerical and auxiliary devices. Alarms, trip signals and status indications must be transmitted to the main control room over fibre or Ethernet. The procurement is categorised as goods and is suitable for small and medium-sized enterprises.

The process has reached tender: the buyer invited offers through an open procedure. Bids may be submitted electronically in English. The deadline for enquiries was 12 October 2026 at 16:00, and the deadline for tenders was 6 November 2026 at 17:00. The buyer expected to finalise its award decision by 3 December 2026. The contract period is 1 January 2027 to 31 July 2032. The estimated value is £400,000 excluding VAT, or £480,000 including VAT. There is one lot. Evaluation is weighted 60% to quality and 40% to price. The selection requirement includes Cyber Essentials certification.

This opportunity suits SCADA specialists able to deliver an end-to-end electrical control and automation system, from engineering design through manufacture, site delivery, installation, integration and commissioning. Strong capability in IEC 61850 is central, as the replacement system must comply fully with that protocol and communicate with existing numerical and auxiliary devices. Suppliers should be able to design reliable control authority and intelligent interlocking, connect alarms, trip signals and status indications over fibre or Ethernet, and provide an operator workstation for the control room. Experience of substation environments, 400/33kV electrical infrastructure, legacy control-system replacement and programmable logic controller integration would be directly relevant. The requirement is identified as suitable for SMEs, while Cyber Essentials is a stated technical selection requirement.

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Notice Information

Notice Title

33kV Substation SCADA Supply

Notice Description

The United Kingdom Atomic Energy Authority are looking to engage a Supervisory Control And Data Acquisition (SCADA) specialist to develop a new SCADA system in J5 based on the IEC 61850 protocol, replacing the existing SCADA. The 400/33kV substation, the existing control and automation system, comprising historic CODAS system, SCADA and Programmable Logic Controllers, will be decommissioned and replaced with an advanced site-wide master SCADA system in full compliance with the IEC 61850 protocol. The work includes the design, manufacture, delivery, installation, and commissioning of the complete system, including an operator workstation in J5 control room. The SCADA will provide full control authority with intelligent interlocking to prevent failures or operational errors. The system will integrate with all numerical and auxiliary devices, transmitting all alarms, trip signals, and status indications over fibre or Ethernet to the main control room.

Planning Information

https://uk.eu-supply.com/app/rfq/rwlentrance_s.asp?PID=108451&TID=100113513&B= Pre Market Engagement survey is included in the document pack.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-06e9ac
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/089326-2026
Current Stage
Tender
All Stages
Planning, Tender

Procurement Classification

Notice Type
UK4 - Tender Notice
Procurement Type
Standard
Procurement Category
Goods
Procurement Method
Open
Procurement Method Details
Open procedure
Tender Suitability
SME
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

42 - Industrial machinery

CPV Codes

42961200 - Scada or equivalent system

Notice Value(s)

Tender Value
£400,000 £100K-£500K
Lots Value
£400,000 £100K-£500K
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
21 Sep 2026Today
Submission Deadline
6 Nov 20262 months to go
Future Notice Date
14 Sep 2026Expired
Award Date
Not specified
Contract Period
1 Jan 2027 - 31 Jul 2032 Over 5 years
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
United Kingdom Atomic Energy Authority
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
OXFORDSHIRE
Postcode
OX14 3DB
Postcode Area
Oxford
Country
England
Major Region (ITL 1)
TLJ South East (England)
Basic Region (ITL 2)
TLJ1 Berkshire, Buckinghamshire and Oxfordshire
Small Region (ITL 3)
TLJ14 Oxfordshire CC
Delivery Location
TLJ14 Oxfordshire CC
Local Authority
South Oxfordshire
Electoral Ward
Sandford & the Wittenhams
Westminster Constituency
Didcot and Wantage

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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