---
title: "SUPPLY CHAIN NOTICE - Central Substation RIBA4 & Build"
ocid: "ocds-b5fd17-14189b2f-a65e-4cbd-84d2-05676a0751ca"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-14189b2f-a65e-4cbd-84d2-05676a0751ca"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-14189b2f-a65e-4cbd-84d2-05676a0751ca.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-14189b2f-a65e-4cbd-84d2-05676a0751ca.json"
source: "Contracts Finder"
current_stage: "Planning"
buyer: "MINISTRY OF DEFENCE"
published: "2026-03-19"
---

# SUPPLY CHAIN NOTICE - Central Substation RIBA4 & Build

Buyer: MINISTRY OF DEFENCE  
Current stage: Planning  
OCID: ocds-b5fd17-14189b2f-a65e-4cbd-84d2-05676a0751ca

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## Summary

The Ministry of Defence is planning a procurement process for the construction of a Central Substation, with the project titled "SUPPLY CHAIN NOTICE - Central Substation RIBA4 & Build." This project falls under the substation construction work category within the industry classification scheme (CPV 45232220). Located in Portsmouth, South East England, this project is currently in the Planning stage with a planned procurement approach. Expressions of interest must be submitted by 27th March, following a future notice issued on 25th February, with the project expected to commence on 1st July 2026 and conclude by 1st July 2027. The total contract value is estimated at £1,300,000 GBP.

The opportunity presents significant business growth potential for small and medium-sized enterprises (SMEs) with expertise in substation construction, design, and commissioning. The procurement process includes distinct phases for design and build, adhering to RIBA stages 3 to 6. Businesses specialising in technical design and construction within the electrical infrastructure sector are well-suited to compete. The Ministry of Defence encourages SMEs to engage in this tender, providing a platform for innovation and expansion in infrastructure development. Interested parties should prepare to submit their expressions of interest promptly to avoid missing this opportunity.

## Notice

The overarching requirement of the project is to develop the RIBA Stage 3 Design into a complete RIBA Stage 4 Technical Design and subsequently build and commission the new Central Substation building (through RIBA Stage 5 and 6). This project is split into two principal Phases as outlined below - a Design Phase (1) and a Build Phase (2), each with their own corresponding Work Packages. In summary, this Project includes the following work packages: Project Phase 1 (Design) includes the following work packages: - WP 1: Survey and assessment work to facilitate the RIBA 4 design. - WP 2: RIBA 4 Technical Design incl. all temporary works designs. - WP 3: Undertake earthing design for Central Substation. Project Phase 2 (Build) includes the following work package: - WP 4: RIBA 5 and 6: Construct, Commission and Handover the works as designed in Phase 1. Installation of HV/LV Electrical switch panels and associated cabling shall not form part of this work, and will follow as a separate project once WP 4 is complete. Those that meet the criteria of this initial phase will be invited to participate in a final competition. Deadlines for expressions of interest are the 27th March. Any expressions received after this date will not be accepted.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/550e2499-b437-4f0b-8773-b1f3cf975927 |
| Notice type | Planned Procurement Notice |
| Procurement type | Standard |
| Procurement category | Not specified |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Planning |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 19 Mar 2026 |
| Submission deadline | Not specified |
| Future notice date | 25 Feb 2026 |
| Award date | Not specified |
| Contract period | 30 Jun 2026 - 1 Jul 2027 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £1,300,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | MINISTRY OF DEFENCE |
| Locality | PORTSMOUTH |
| Post town | Portsmouth |
| Postcode | PO1 3LS |
| Country | England |
| ITL 1 | TLJ South East (England) |
| ITL 2 | TLJ3 Hampshire and Isle of Wight |
| ITL 3 | TLJ31 Portsmouth |
| Local authority | Portsmouth |
| Electoral ward | Charles Dickens |
| Westminster constituency | Portsmouth South |
| Delivery location | TLJ South East (England) |

## CPV Codes

### Divisions

- 45 - Construction work

### Codes

- 45232220 - Substation construction work

## Release History

- 19 Mar 2026 at 14:38 - Planning - Planned Procurement Notice - https://www.contractsfinder.service.gov.uk/Notice/550e2499-b437-4f0b-8773-b1f3cf975927

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/550e2499-b437-4f0b-8773-b1f3cf975927
  19th March 2026 - Future opportunity notice on Contracts Finder

## 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-b5fd17-14189b2f-a65e-4cbd-84d2-05676a0751ca. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-14189b2f-a65e-4cbd-84d2-05676a0751ca.json.