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AwardedUnited KingdomWorks£1

STEP Construction Partner

Published
Published 22 April 2026
Deadline
Closed 17 July 2024

Overview

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.

Key details

Country
United Kingdom
Status
Awarded
Category
Works
Estimated value
£1
Procedure
Selective
SME suitable
Yes
Published
22 April 2026
Deadline
Closed
Classification (CPV)
Engineering works and construction works

Award outcome

Awarded value
£10,000,000,000
Award date
1 April 2026
Contract period
1 April 2026 → 31 March 2029
Winner
  • ILIOS

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Notice history

Every published notice in this contracting process, newest first.

  1. Contract Award Notice

    22 April 2026

Contracting authority

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Awarded: STEP Construction Partner — won by ILIOS — Skim