---
title: "T322 NIEN Transmission Substation Turnkey (Amended)"
ocid: "ocds-h6vhtk-04fdbe"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-04fdbe"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-04fdbe.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-04fdbe.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "NORTHERN IRELAND ELECTRICITY NETWORKS LIMITED"
published: "2026-06-22"
---

# T322 NIEN Transmission Substation Turnkey (Amended)

Buyer: NORTHERN IRELAND ELECTRICITY NETWORKS LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-04fdbe

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## Summary

The public procurement process led by Northern Ireland Electricity Networks Limited has concluded with awarding contracts for the "T322 NIEN Transmission Substation Turnkey (Amended)" project. This initiative is significant within the energy industry, particularly focusing on substation construction in Northern Ireland. The procurement process involved a competitive flexible procedure under the umbrella of a utilities special regime, leading to a multi-party framework agreement with two distinct lots: Lot 1, encompassing larger scale substations with capacities ranging from 110 to 400kV, and Lot 2, covering medium scale substations from 33 to 275kV. The contract's total combined value is substantial, with Lot 1 awarded for £234 million and Lot 2 for £128.4 million, with a contract period commencing on 2 July 2026 and concluding on 30 June 2031, extendable to 2034.

This tender provides substantial opportunities for businesses equipped to handle complex electrical, mechanical, and civil requirements typical of turnkey substation projects. Large enterprises, particularly those with a robust portfolio in engineering procurement and construction (EPC) models, will find this procurement appealing. The framework allows considerable flexibility in design and construction approaches, potentially benefiting companies capable of innovation within the utilities sector. Additionally, businesses specialising in the supply of transformers and switchgear or possessing local capabilities in overhead lines and cables installation, within the designated project regions in the UK, are especially well-suited to compete in this evolving framework throughout its potential eight-year tenure.

## Notice

It is proposed to establish a Multi-Party Framework which will consist of two lots, * Lot 1 will consist of larger scale substations with a range between 110 - 400kV and an estimated cost range between PS25 to PS100m. * Lot 2 will consist of medium scale substations with a range between 33 - 275kV and an estimated cost range between PS1 - PS25m * The scope of works to be procured will include predominantly substation works including turnkey electrical, mechanical, civils and enabling works, with the inclusion of local overhead lines and cables within the curtilage of the site. * NIEN wish to retain the flexibility for each lot to utilise both Design and Build (D&B) and Engineering Procurement and Construction (EPC) models. * The default approach will be that equipment supply (transformers and switchgear etc.) will be in the scope of projects. Free issue of equipment will be limited to those projects for which NIEN have equipment ordered.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/058657-2026 |
| Notice type | UK6 - Contract Award Notice |
| Procurement type | Framework |
| Procurement category | Works |
| Procurement method | Selective |
| Procurement method details | Competitive flexible procedure |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 22 Jun 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 21 Jun 2026 |
| Contract period | 1 Jul 2026 - 30 Jun 2031 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | £362,400,000 |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Active |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | NORTHERN IRELAND ELECTRICITY NETWORKS LIMITED |
| Locality | BELFAST |
| Post town | Northern Ireland |
| Postcode | BT9 5HT |
| Country | Northern Ireland |
| ITL 1 | Not specified |
| ITL 2 | Not specified |
| ITL 3 | Not specified |
| Local authority | Not specified |
| Electoral ward | Not specified |
| Westminster constituency | Not specified |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 5 |
| Supplier names | ADMAN CIVIL PROJECTS; AUREOS ENERGY; H&MV ENGINEERING SERVICES; MURPHY INTERNATIONAL; SIEMENS ENERGY |

## CPV Codes

### Divisions

- 45 - Construction work

### Codes

- 45232220 - Substation construction work

## Release History

- 22 Jun 2026 at 15:21 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/058657-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/058657-2026
  22nd June 2026 - Contract award notice on Find a Tender

## Notice URLs

- 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-04fdbe. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-04fdbe.json.