---
title: "24/033 - Qualification System for the provision of Engineering, Procurement and Construction Services for South West Scotland Onshore System (SWSOS)"
ocid: "ocds-h6vhtk-05e433"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05e433"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05e433.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05e433.json"
source: "Find A Tender Service"
current_stage: "Tender"
buyer: "GAS NETWORKS IRELAND"
published: "2025-11-19"
---

# 24/033 - Qualification System for the provision of Engineering, Procurement and Construction Services for South West Scotland Onshore System (SWSOS)

Buyer: GAS NETWORKS IRELAND  
Current stage: Tender  
OCID: ocds-h6vhtk-05e433

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## Summary

The contracting process, initiated by Gas Networks Ireland, is currently in the tender stage for the project titled "24/033 - Qualification System for the provision of Engineering, Procurement and Construction Services for South West Scotland Onshore System (SWSOS)". This procurement focuses on construction work for gas pipelines within the works category, and is located in Ireland and Scotland. The project is part of the SWSOS Decarbonisation Programme, aiming for Net Zero by 2050. The project involves designing, procuring, constructing, and integrating new electric drive compressor halls. The tender, which opened in November 2025, will run until November 2035 and follows a selective procurement method, noted as a negotiated procedure with a prior call for competition. The submission for this tender must be done electronically through the eTenders website.

This procurement offers significant opportunities for growth, particularly for businesses experienced in large-scale infrastructure projects within the energy sector. Companies specialising in detailed design procurement, material procurement, construction activities, as well as integration and system tie-ins, would find this tender particularly relevant. The tender's focus on sustainable infrastructure within a multinational framework underscores its strategic importance, paving the way for substantial involvement in efforts to decarbonise energy infrastructure. Additionally, businesses with expertise in cybersecurity, safety standards, and project management will also be well-positioned to compete in this process, facilitating potential collaborations on high-impact projects.

## Notice

GNI and GNI (UK) are seeking experienced EPCS contractors to deliver a series of critical infrastructure upgrades as part of the SWSOS Decarbonisation Programme, a cornerstone of our commitment to achieving Net Zero by 2050. This tender covers multiple work packages, including the design, procurement, construction, and integration of new electric drive compressor halls across operational sites in Scotland. The successful contractor will manage complex interfaces between new and existing assets, ensuring seamless integration of mechanical, electrical, and control systems, while adhering to stringent cybersecurity and safety standards. This initiative represents a strategic investment in sustainable energy infrastructure and offers an opportunity to collaborate on projects of significant scale and impact within a multinational framework. SCOPE OF REQUIREMENTS: The scope of this tender encompasses overall project management and delivery across multiple work packages, including but not limited to the following: * Detailed Design Procurement o Procurement of detailed design for new compressor halls, based on the GNI suite of functional specifications. * Materials Procurement o Mechanical materials: high-pressure pipework, valves, and fittings. o Electrical materials: interconnecting cabling and junction boxes. o Instrumentation materials: transmitters and data cabling. Note: The second-stage tender process (CFC) will confirm the final requirements and clarify the full scope boundaries for the electric motor drive (EMD) package and the contractor's scope. * Construction Activities o Construction of new compressor halls. o Completion of all civil works, including excavations, foundations, structural steel, compressor foundations, and ancillary electrical buildings. o Installation of interconnecting pipework, electrical and control cabling, and junction boxes. * Integration and System Tie-ins o Integration of new electric drive compressors into the existing fleet of gas turbines. o Mechanical, electrical, and control system tie-ins at operational compressor stations across GNI UK sites in Scotland. * Security and Cybersecurity o Installation of security systems and implementation of cybersecurity controls in line with GNI specifications. * Testing and Commissioning o Full responsibility for FAT and SAT activities. o Commissioning and start-up of all new systems. Additional Scope Notes: * GNI may procure electric motor drive (EMD) packages separately. * GNI will manage all permitting and planning permissions. * GNI will separately upgrade incoming site electrical supply to power the new EMD packages. Indicative EPCS Scope Boundary: The EPCS scope is envisaged to cover all elements required for the delivery of an electric drive compressor station as outlined above. A more detailed scope is provided within the Appendices of the Qualification System Questionnaire documents.

### Lot Information

Lot 1

GNI and GNI (UK) are seeking experienced EPCS contractors to deliver a series of critical infrastructure upgrades as part of the SWSOS Decarbonisation Programme, a cornerstone of our commitment to achieving Net Zero by 2050. This tender covers multiple work packages, including the design, procurement, construction, and integration of new electric drive compressor halls across operational sites in Scotland. The successful contractor will manage complex interfaces between new and existing assets, ensuring seamless integration of mechanical, electrical, and control systems, while adhering to stringent cybersecurity and safety standards. This initiative represents a strategic investment in sustainable energy infrastructure and offers an opportunity to collaborate on projects of significant scale and impact within a multinational framework. SCOPE OF REQUIREMENTS: The scope of this tender encompasses overall project management and delivery across multiple work packages, including but not limited to the following: * Detailed Design Procurement o Procurement of detailed design for new compressor halls, based on the GNI suite of functional specifications. * Materials Procurement o Mechanical materials: high-pressure pipework, valves, and fittings. o Electrical materials: interconnecting cabling and junction boxes. o Instrumentation materials: transmitters and data cabling. Note: The second-stage tender process (CFC) will confirm the final requirements and clarify the full scope boundaries for the electric motor drive (EMD) package and the contractor's scope. * Construction Activities o Construction of new compressor halls. o Completion of all civil works, including excavations, foundations, structural steel, compressor foundations, and ancillary electrical buildings. o Installation of interconnecting pipework, electrical and control cabling, and junction boxes. * Integration and System Tie-ins o Integration of new electric drive compressors into the existing fleet of gas turbines. o Mechanical, electrical, and control system tie-ins at operational compressor stations across GNI UK sites in Scotland. * Security and Cybersecurity o Installation of security systems and implementation of cybersecurity controls in line with GNI specifications. * Testing and Commissioning o Full responsibility for FAT and SAT activities. o Commissioning and start-up of all new systems. Additional Scope Notes: * GNI may procure electric motor drive (EMD) packages separately. * GNI will manage all permitting and planning permissions. * GNI will separately upgrade incoming site electrical supply to power the new EMD packages. Indicative EPCS Scope Boundary: The EPCS scope is envisaged to cover all elements required for the delivery of an electric drive compressor station as outlined above. A more detailed scope is provided within the Appendices of the Qualification System Questionnaire documents.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/075148-2025 |
| Notice type | Tender Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Selective |
| Procurement method details | Negotiated procedure with prior call for competition |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 19 Nov 2025 |
| Submission deadline | 20 Nov 2035 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 20 Nov 2025 - 20 Nov 2035 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | GAS NETWORKS IRELAND |
| Locality | CORK |
| Post town | Not specified |
| Postcode | N/A |
| Country | Not specified |
| 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 | TLM Scotland, TLN Northern Ireland |

## CPV Codes

### Divisions

- 31 - Electrical machinery, apparatus, equipment and consumables; lighting
- 44 - Construction structures and materials; auxiliary products to construction (except electric apparatus)
- 45 - Construction work
- 71 - Architectural, construction, engineering and inspection services
- 79 - Business services: law, marketing, consulting, recruitment, printing and security

### Codes

- 31100000 - Electric motors, generators and transformers
- 44100000 - Construction materials and associated items
- 45220000 - Engineering works and construction works
- 45231200 - Construction work for oil and gas pipelines
- 45231220 - Construction work for gas pipelines
- 45231221 - Gas supply mains construction work
- 45250000 - Construction works for plants, mining and manufacturing and for buildings relating to the oil and gas industry
- 71300000 - Engineering services
- 71530000 - Construction consultancy services
- 71540000 - Construction management services
- 79421200 - Project-design services other than for construction work

## Release History

- 19 Nov 2025 at 11:31 - Tender - Tender Notice - https://www.find-tender.service.gov.uk/Notice/075148-2025

## Notice URLs

- http://www.courts.ie
- https://www.etenders.gov.ie/epps/home.do
- https://www.gasnetworks.ie

## 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-05e433. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05e433.json.