STEP Construction Partner (CP)

United Kingdom Fusion EnergycontractFind a TenderRef ocds-h6vhtk-0361bf32014L0024active
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Estimated value

works

Awarded value

Suppliers

1

Lots

1

1 awarded

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
45200000
45213250
45214610
45222000
45223000
45251000
45251100
45251110
45251111
45254200
71500000
71520000
71521000
71530000
71540000
71541000
79418000
Contract locations
UK

Award criteria

Criteria the buyer will use to evaluate bids.

NameDescriptionTypeWeighting
Corporate: Economic Value15%quality
Corporate: Social Value10%quality
Programme17%quality
Technical18%quality
Cultural: Behavioural and Collaborative Assessment15%quality
Contractual CompliancePass / Failquality
25%price

Submission & procedure

Procedure
Competitive dialogue

Award details

Awarded supplier(s), contract period and value as published in the award notice.

Awarded value

Award date

Contract start

Contract end

Awarded to