STEP Construction Partner (CP)
Estimated value
—
Awarded value
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Suppliers
1
Lots
1
Published
22 Apr 2026
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 £10,000,000,000 across this period.
Scope
- Reference
- T-SP050-22
- Commercial tool
- Standalone contract
- Contract dates
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 £10,000,000,000.
- Main category
- works
- CPV classifications
- 4520000045213250452146104522200045223000452510004525110045251110452511114525420071500000715200007152100071530000715400007154100079418000
- Contract locations
- UK
Award criteria
Criteria the buyer will use to evaluate bids.
| Name | Description | Type | Weighting |
|---|---|---|---|
| Corporate: Economic Value | 15% | quality | — |
| Corporate: Social Value | 10% | quality | — |
| Programme | 17% | quality | — |
| Technical | 18% | quality | — |
| Cultural: Behavioural and Collaborative Assessment | 15% | quality | — |
| Contractual Compliance | Pass / Fail | quality | — |
| — | 25% | price | — |
Submission & procedure
- Procedure
- Competitive dialogue
Award details
Awarded supplier(s), contract period and value as published in the award notice.
Awarded value
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Award date
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Contract start
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Contract end
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