This public procurement record has 9 releases in its history.

Award

22 Apr 2026 at 12:28

TenderUpdate

12 Aug 2024 at 17:19

TenderUpdate

08 Jul 2024 at 12:19

Tender

22 May 2024 at 14:19

TenderUpdate

18 Apr 2023 at 11:24

Planning

10 Nov 2022 at 17:07

TenderUpdate

25 Aug 2022 at 08:57

TenderUpdate

24 Aug 2022 at 11:42

Planning

22 Aug 2022 at 17:42

Summary of the contracting process

The United Kingdom Fusion Energy (UKFE), previously represented by UKAEA, has concluded a procurement process on behalf of UK Industrial Fusion Solutions Limited (UKIFS) for a Construction Partner under the STEP project, aimed at establishing a UK prototype fusion energy plant. The procurement falls under the works category, focusing on engineering and construction, and covers a significant effort to build industrial capabilities within the UK. Lot 2, specifically for the Construction Partner, will be aimed at comprehensive design and the construction of the STEP Prototype Plant's facilities, with a contract potentially extending up to 20 years. The procurement method used was selective, involving competitive dialogue, and the contract value is approximately £10 billion. The procurement is part of a long-term plan with key dates, such as the contract end term in March 2029, with optional extension periods up to 2049. The process initially included two lots, Lot 1 for an Engineering Partner that was later cancelled.

This tender offers substantial opportunities for businesses specialised in construction and engineering to engage in creating a significant energy infrastructure project. Companies with expertise in building complex, large-scale facilities, and managing diverse supply chains would be well-suited to compete in this long-term business opportunity. The partnership with UKFE aims to leverage existing and new supply chains for comprehensive design, procurement, fabrication, and installation tasks, presenting businesses with the chance to participate in cutting-edge fusion energy technology development. Large enterprises like ILIOS, already contracted as the supplier, reflect the scale of expertise and resources required for participation in this venture, ensuring that interested parties can contribute to building a world-leading fusion industry.

How relevant is this notice?

Notice Title

STEP Construction Partner (CP)

Notice Description

UKIFS (now UKFE) has conducted this Procurement for a Construction Partner, who, together with a Fusion Partner (determined to be United Kingdom Atomic Energy Authority (UKAEA)), will bring together and develop extensive industrial capabilities to design and build a UK prototype fusion energy plant capable of delivering net-energy to the grid, and build a world-leading fusion delivery industry. The Procurement was originally divided into two lots: * Lot 1: Engineering Partner (EP) * Lot 2: Construction Partner (CP) However, Lot 1 - EP has since been cancelled. Lot 2 - CP is now the only Lot included in this Procurement exercise. The contract term for Lot 2 will expire 31 March 2029, followed by three (3) optional extension periods of four (4), six (6) and seven (7) years. UKFE will have the right to exercise an extension option at six (6) months' notice. The maximum contract duration will be twenty (20) years with an estimated value of PS10,000,000,000 across this period.

Lot Information

Engineering Partner (EP)

The Engineering Partner's (EP) primary responsibility will be to provide the capability to drive the integrated design of the STEP Prototype Plant (SPP), and to then manufacture that plant through a developing supply chain. This includes (but not be limited to) providing capabilities for management of all engineering data, responsibility for the detailed design of SPP systems, equipment, and components, and contracting through the engineering supply chain. The EP will be responsible for leading a supply chain which delivers the manufacture and assembly of the SPP components. See the procurement documents for further details.

Renewal: The EP contract term will be an initial 3 year period, followed by 3 optional extension periods of 4, 6 and 7 years (these durations are subject to change as the Programme develops). UKIFS will have the right to exercise an extension option on 6 months' notice. The maximum contract length duration for the EP contract will be 20 years with an estimated value of PS10,000,000,000.

Construction Partner

The Construction Partner's (CP) primary responsibility will be to collaboratively provide the capability to drive the integrated design of the overall layout, buildings, infrastructure, onsite and offsite facilities of the STEP Prototype Plant (SPP) to fulfil the support, enclosure and environmental requirements of the operational plant. The CP will then purchase, fabricate, deliver and install all elements of the designed facilities utilising existing and new supply chains, directly sourced or contracted resources. The CP's responsibilities will include (but not be limited to) managing the overall health, safety, environment and security systems applicable to all parties engaged at the site. Additional information: Lot 1 for the Engineering Partner (EP) was cancelled and will not be awarded. Only Lot 2 for the Construction Partner (CP) forms part of this notice.

Renewal: The CP contract term will be an initial 3 year period, followed by 3 optional extension periods of 4, 6 and 7 years (these durations are subject to change as the Programme develops). UKIFS will have the right to exercise an extension option on 6 months' notice. The maximum contract length duration for the CP contract will be 20 years with an estimated value of PS10,000,000,000.

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-0361bf
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/036554-2026
Current Stage
Award
All Stages
Planning, Tender, Award

Procurement Classification

Notice Type
Planning Notice
Procurement Type
Standard
Procurement Category
Works
Procurement Method
Selective
Procurement Method Details
Competitive dialogue
Tender Suitability
Not specified
Awardee Scale
Large

Common Procurement Vocabulary (CPV)

CPV Divisions

45 - Construction work

66 - Financial and insurance services

71 - Architectural, construction, engineering and inspection services

79 - Business services: law, marketing, consulting, recruitment, printing and security


CPV Codes

45200000 - Works for complete or part construction and civil engineering work

45213250 - Construction work for industrial buildings

45214610 - Laboratory building construction work

45220000 - Engineering works and construction works

45222000 - Construction work for engineering works except bridges, tunnels, shafts and subways

45223000 - Structures construction work

45251000 - Construction works for power plants and heating plants

45251100 - Construction work for power plant

45251110 - Nuclear-power station construction work

45251111 - Construction work for nuclear reactors

45254200 - Construction work for manufacturing plant

66519000 - Engineering, auxiliary, average, loss, actuarial and salvage insurance services

71000000 - Architectural, construction, engineering and inspection services

71240000 - Architectural, engineering and planning services

71250000 - Architectural, engineering and surveying services

71310000 - Consultative engineering and construction services

71311000 - Civil engineering consultancy services

71312000 - Structural engineering consultancy services

71313000 - Environmental engineering consultancy services

71318000 - Advisory and consultative engineering services

71320000 - Engineering design services

71321000 - Engineering design services for mechanical and electrical installations for buildings

71322000 - Engineering design services for the construction of civil engineering works

71323000 - Engineering-design services for industrial process and production

71323200 - Plant engineering design services

71330000 - Miscellaneous engineering services

71333000 - Mechanical engineering services

71334000 - Mechanical and electrical engineering services

71336000 - Engineering support services

71337000 - Corrosion engineering services

71340000 - Integrated engineering services

71350000 - Engineering-related scientific and technical services

71500000 - Construction-related services

71520000 - Construction supervision services

71521000 - Construction-site supervision services

71530000 - Construction consultancy services

71540000 - Construction management services

71541000 - Construction project management services

79418000 - Procurement consultancy services

Notice Value(s)

Tender Value
£20,000,000,000 Over £10B
Lots Value
£20,000,000,000 Over £10B
Awards Value
Not specified
Contracts Value
£10,000,000,000 Over £10B

Notice Dates

Publication Date
22 Apr 20264 months ago
Submission Deadline
12 Jul 2024Expired
Future Notice Date
30 Apr 2023Expired
Award Date
2 Apr 20264 months ago
Contract Period
Not specified - Not specified
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Active, Cancelled
Awards Status
Active
Contracts Status
Active

Contracting Authority (Buyer)

Main Buyer
United Kingdom Fusion Energy
Additional Buyers

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
ABINGDON
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
Not specified

Local Authority
South Oxfordshire
Electoral Ward
Sandford & the Wittenhams
Westminster Constituency
Didcot and Wantage

Supplier Information

Number of Suppliers
1
Supplier Name

ILIOS

Open Contracting Data Standard (OCDS)

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