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33kV Substation SCADA Supply

UK Atomic Energy Authority

This public procurement record has 1 release in its history.

Planning

21 Aug 2026 at 14:01

UK2 - Preliminary Market Engagement Notice
Summary of the contracting process

The UK Atomic Energy Authority intends to procure a complete 33kV substation Supervisory Control and Data Acquisition (SCADA) system for its J5 facility. The system will replace the existing CODAS, SCADA and programmable logic controller arrangements with an advanced site-wide master SCADA system compliant with the IEC 61850 protocol. The requirement covers design, manufacture, delivery, installation and commissioning, including an operator workstation in the J5 control room. It will provide control authority in J5 and D8, use intelligent interlocking to prevent failures and operational errors, and integrate numerical and auxiliary devices. Alarms, trip signals and status indications will be transmitted over fibre or Ethernet to the main control room. The work is associated with the Authority’s site in Oxfordshire and is classified as SCADA or an equivalent system.

This procurement is at the planning stage: the Authority has stated an intention to procure and has not yet invited tenders. It expects to use a tender procedure, with a future notice anticipated on 14 September 2026. A pre-market engagement survey is planned, with responses requested by 3 September 2026. The estimated contract value is £400,000 excluding VAT, or £480,000 including VAT. The planned contract period is from 18 January 2027 to 17 January 2033. The requirement is a single lot and is identified as above the relevant threshold. The lot is marked as suitable for small and medium-sized enterprises. Businesses should treat the dates as the buyer’s current expectations and use the engagement stage to understand the developing requirement before any competition is launched.

This will suit a SCADA specialist able to deliver a complete electrical substation control and automation solution, rather than only supplying software or equipment. Relevant capability includes designing IEC 61850-compliant systems; integrating numerical protection and auxiliary devices; configuring site-wide master SCADA functionality; and providing operator workstations, control authority and intelligent interlocking. Suppliers should be able to manufacture, deliver, install and commission the system, including replacement of legacy CODAS, SCADA and programmable logic controllers. Experience of transmitting alarms, trip signals and status information over fibre or Ethernet to a control room will be directly relevant. The requirement is marked as suitable for SMEs, so an experienced specialist or capable delivery partnership may be well placed to prepare for the future competition.

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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 in J5 and D8, 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/079948-2026
Current Stage
Planning
All Stages
Planning

Procurement Classification

Notice Type
UK2 - Preliminary Market Engagement Notice
Procurement Type
Standard
Procurement Category
Goods
Procurement Method
Not Specified
Procurement Method Details
Not specified
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
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
21 Aug 20265 days ago
Submission Deadline
Not specified
Future Notice Date
14 Sep 20263 weeks to go
Award Date
Not specified
Contract Period
18 Jan 2027 - 17 Jan 2033 Over 5 years
Recurrence
Not specified

Notice Status

Tender Status
Planning
Lots Status
Planning
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
UK 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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