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T322 NIEN Transmission Substation Turnkey (Amended)

Northern Ireland Electricity Networks Limited

This public procurement record has 1 release in its history.

Award

22 Jun 2026 at 16:21

UK6 - Contract Award Notice
Summary of the contracting process

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.

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Notice Information

Notice Title

T322 NIEN Transmission Substation Turnkey (Amended)

Notice Description

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.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-04fdbe
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/058657-2026
Current Stage
Award
All Stages
Award

Procurement Classification

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

Common Procurement Vocabulary (CPV)

CPV Divisions

45 - Construction work

CPV Codes

45232220 - Substation construction work

Notice Value(s)

Tender Value
Not specified
Lots Value
Not specified
Awards Value
£362,400,000 £100M-£1B
Contracts Value
Not specified

Notice Dates

Publication Date
22 Jun 20262 months ago
Submission Deadline
Not specified
Future Notice Date
Not specified
Award Date
22 Jun 20262 months ago
Contract Period
2 Jul 2026 - 30 Jun 2031 4-5 years
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Complete
Awards Status
Active
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
Northern Ireland Electricity Networks Limited
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
BELFAST
Postcode
BT9 5HT
Postcode Area
Northern Ireland
Country
Northern Ireland
Major Region (ITL 1)
Not specified
Basic Region (ITL 2)
Not specified
Small Region (ITL 3)
Not specified
Delivery Location
Not specified
Local Authority
Not specified
Electoral Ward
Not specified
Westminster Constituency
Not specified

Supplier Information

Number of Suppliers
5
Supplier Names

Adman Civil Projects Ltd

Aureos Energy Ltd

H&MV Engineering Services Limited

Murphy International Limited

Siemens Energy Ltd

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

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