---
title: "HNB - Decommissioning Site Electrical Distribution System"
ocid: "ocds-h6vhtk-05f8f3"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05f8f3"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05f8f3.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05f8f3.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "NUCLEAR RESTORATION SERVICES LIMITED"
published: "2026-04-23"
---

# HNB - Decommissioning Site Electrical Distribution System

Buyer: NUCLEAR RESTORATION SERVICES LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-05f8f3

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## Summary

Nuclear Restoration Services Limited, a public authority under sub-central government, is overseeing the procurement process for the decommissioning site electrical distribution system at Hunterston B. This project is a critical component of the UK's nuclear decommissioning programme, aimed at ensuring the safe and efficient transition of Advanced Gas-Cooled Reactor sites previously managed by EDF Energy Nuclear Generation Limited. The procurement, which concluded with a direct award to Dalkia Engineering Limited, marks the completion of this important process as part of the transition starting in spring 2026. The project, divided into two phases, involves detailed design followed by procurement and construction works, with the contract period set between April 2026 and May 2028. The procurement method chosen was a direct award, justified by the need to avoid technical difficulties and regulatory risks, ensuring the ongoing operation of Hunterston B is maintained efficiently.

This contract presents significant business growth opportunities for suppliers specialising in electrical services, particularly large-scale firms capable of handling critical technical requirements and maintaining compliance with rigorous safety and environmental standards. Dalkia Engineering Limited, a reputable supplier based in Nottingham, has been selected through this direct award process due to its expertise and capability to fulfill the intricate requirements necessary for the decommissioning process. Businesses that provide specialised electrical installation services and have experience in nuclear site operations are in an advantageous position to collaborate on similar contracts in the future as Nuclear Restoration Services proceeds with its procurement plans under established processes, following the completion of this current agreement.

## Notice

Delivery of a Decommissioning Site Electrical Distribution System, detailed design and build contract, split into 2 phases. Phase 1 detailed design, Phase 2 procurement and construction works following completion of detailed design at Hunterston B

### Procurement Information

As part of the UK's nuclear decommissioning programme, Nuclear Restoration Services (NRS) will begin taking ownership of assets and the responsibility for the Advanced Gas-Cooled Reactor (AGR) sites from EDF Energy Nuclear Generation Limited (EDF). This transition, starting with Hunterston B in spring 2026, marks a key milestone in ensuring the continued safe, secure and cost-effective decommissioning of the UK's nuclear legacy. NRS is committed to transparency and collaboration throughout this transfer process, working closely with EDF, regulators and stakeholders to deliver a seamless transfer whilst maintaining the highest standards of regulatory, safety and environmental compliance. In line with this commitment, NRS therefore intends to make a direct award in accordance with Section 41 of the Procurement Act 2023 and wishes to advise that the existing EDF contract with Dalkia Engineering Limited, as detailed in this notice, is being novated to Nuclear Restoration Services (NRS) as part of the AGR site transfer process. This is a direct award for the purposes of Procurement Act 2023 and is being made pursuant to Paragraph 6 of Schedule 5 to the Procurement Act 2023 NRS considers Paragraph 6 applies as the services provided by Dalkia Engineering Limited are critical to the ongoing operation of Hunterston B and it would create significant technical difficulties and unacceptable regulatory risks to NRS for another supplier to supply the Decommissioning Site Electrical Distribution System at this time. Following completion of this novated contract, all future requirements will be progressed through NRS's established procurement processes and in continued compliance with the Procurement Act 2023 (PA23). Dalkia Engineering Limited is neither an excluded or excludable supplier. A Contract Award Notice and Contract Details Notice will follow in accordance with Procurement Act 2023. ** Please Note ** This is a framework and will be called off as and when required.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/036980-2026 |
| Notice type | UK7 - Contract Details Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Direct |
| Procurement method details | Direct award |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 23 Apr 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 18 Dec 2025 |
| Contract period | 31 Mar 2026 - 31 May 2028 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | £14,000,000 |
| Contracts value | £14,000,000 |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Active, Pending |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | NUCLEAR RESTORATION SERVICES LIMITED |
| Locality | WARRINGTON |
| Post town | Warrington |
| Postcode | WA3 6GR |
| Country | England |
| ITL 1 | TLD North West (England) |
| ITL 2 | TLD6 Cheshire |
| ITL 3 | TLD61 Warrington |
| Local authority | Warrington |
| Electoral ward | Birchwood |
| Westminster constituency | Warrington North |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | DALKIA ENGINEERING |

## CPV Codes

### Divisions

- 45 - Construction work
- 71 - Architectural, construction, engineering and inspection services

### Codes

- 45310000 - Electrical installation work
- 71314100 - Electrical services

## Release History

- 23 Apr 2026 at 10:18 - Award - UK7 - Contract Details Notice - https://www.find-tender.service.gov.uk/Notice/036980-2026
- 25 Feb 2026 at 10:57 - AwardUpdate - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/016780-2026
- 16 Feb 2026 at 15:47 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/013964-2026
- 18 Dec 2025 at 12:20 - Award - UK5 - Transparency Notice - https://www.find-tender.service.gov.uk/Notice/084314-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/036980-2026
  23rd April 2026 - Contract details notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/016780-2026
  25th February 2026 - Contract award notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/013964-2026
  16th February 2026 - Contract award notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/084314-2025
  18th December 2025 - Transparency notice on Find a Tender

## Notice URLs

- https://www.gov.uk/government/organisations/nuclear-restoration-services
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05f8f3. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05f8f3.json.