---
title: "Repurposing of 400/36kV Substation & 36kV Switchgear"
ocid: "ocds-h6vhtk-05fc82"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05fc82"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05fc82.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05fc82.json"
source: "Find A Tender Service"
current_stage: "Planning"
buyer: "UK ATOMIC ENERGY AUTHORITY"
published: "2025-12-23"
---

# Repurposing of 400/36kV Substation & 36kV Switchgear

Buyer: UK ATOMIC ENERGY AUTHORITY  
Current stage: Planning  
OCID: ocds-h6vhtk-05fc82

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05fc82)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-05fc82.json)

## Summary

The UK Atomic Energy Authority, based in Oxfordshire, is in the planning stage of a tender for the "Repurposing of 400/36kV Substation & 36kV Switchgear" project. This procurement falls under the electrical installation work category and aims to refurbish a private network for future operations at the Culham Science Centre. The preliminary market engagement notice was published on 23rd December 2025, with engagement activities scheduled to conclude by 9th January 2026. Interested parties can expect the main communication for this tender to be announced by 12th January 2026. The contract, valued at £600,000 gross, aims to commence on 20th March 2026 and conclude by 20th August 2027.

This tender presents an excellent opportunity for SMEs and voluntary, community, and social enterprises (VCSEs) specialising in electrical installation works. The project supports future operations in the energy sector, specifically targeting private fusion facilities, thus providing substantial growth potential for businesses with expertise in electrical infrastructure. With the contract period spanning over a year, this tender offers a stable and potentially lucrative opportunity for organisations capable of delivering complex electrical projects. Firms with a track record of working on projects involving substation and switchgear repurposing, especially within the energy sector, would be well-suited to compete for this opportunity.

## Notice

The Authority wishes to commission an organisation to deliver a work package to provide a repurposed and refurbished 400/36kV private network that is sufficient for current and future UKAEA operations and private Fusion facilities after the closure of the JET experiment at the Culham Science Centre.

### Planning Information

Publication of the preliminary market engagement notice and communication with potential suppliers to notify them of the upcoming opportunity.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/085816-2025 |
| Notice type | UK2 - Preliminary Market Engagement Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | SME, VCSE |
| Awardee scale | Not specified |
| All stages | Planning |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 23 Dec 2025 |
| Submission deadline | Not specified |
| Future notice date | 12 Jan 2026 |
| Award date | Not specified |
| Contract period | 20 Mar 2026 - 20 Aug 2027 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £500,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Planning |
| Lots status | Planning |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | UK ATOMIC ENERGY AUTHORITY |
| Locality | OXFORDSHIRE |
| Post town | Oxford |
| Postcode | OX14 3DB |
| Country | England |
| ITL 1 | TLJ South East (England) |
| ITL 2 | TLJ1 Berkshire, Buckinghamshire and Oxfordshire |
| ITL 3 | TLJ14 Oxfordshire CC |
| Local authority | South Oxfordshire |
| Electoral ward | Sandford & the Wittenhams |
| Westminster constituency | Didcot and Wantage |
| Delivery location | TLJ14 Oxfordshire CC |

## CPV Codes

### Divisions

- 45 - Construction work

### Codes

- 45310000 - Electrical installation work

## Release History

- 23 Dec 2025 at 12:49 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/085816-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/085816-2025
  23rd December 2025 - Preliminary market engagement notice on Find a Tender

## Notice URLs

- https://www.gov.uk/government/organisations/uk-atomic-energy-authority
- 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-05fc82. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05fc82.json.