---
title: "SONI078 Low Carbon Inertia Services in Northern Ireland - Phase 2"
ocid: "ocds-h6vhtk-06a8c9"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06a8c9"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-06a8c9.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-06a8c9.json"
source: "Find A Tender Service"
current_stage: "Tender"
buyer: "SONI LTD"
published: "2026-05-29"
---

# SONI078 Low Carbon Inertia Services in Northern Ireland - Phase 2

Buyer: SONI LTD  
Current stage: Tender  
OCID: ocds-h6vhtk-06a8c9

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[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-06a8c9.json)

## Summary

SONI Ltd is seeking bids for the "SONI078 Low Carbon Inertia Services in Northern Ireland - Phase 2" project, operating under the Northern Irish devolved regulations. This tender involves delivering services associated with the development of the electricity transmission network, collaborating with Northern Ireland Electricity Networks as the Transmission Asset Owner. Key timelines include an expression of interest deadline on 30th June 2026 and a contract period starting 1st April 2027 until 31st March 2035. Located in the United Kingdom, this tender is within the public utilities sector and is being conducted through a selective procurement method, described as a competitive flexible procedure with a legal basis under UKPGA 2023/54.

This tender represents a significant opportunity for businesses specialising in electricity generation, energy storage, or system service provision. Companies with relevant experience and a solid financial and legal standing are well-positioned to compete, as the award criteria focus on these aspects alongside health, safety, and cyber security. Small and medium-sized enterprises are encouraged to participate, given the suitability criteria. The maximum number of participants for the closed framework agreement is five, allowing businesses to secure a substantial foothold in Northern Ireland's renewable energy sector with a potential contract value of £7,310,000. Details are accessible through the Procurement Specific Questionnaire available on www.mytenders.co.uk.

## Notice

SONI has the responsibility as the Transmission System Operator (TSO) under its license to operate and plan the development of the electricity transmission network. This requires SONI to complete all the relevant activities ('pre-construction') to enable Northern Ireland Electricity Networks, the Transmission Asset Owner (TAO), to carry out the construction and connection to the grid. Refer to PSQ for full details.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/050801-2026 |
| Notice type | UK4 - Tender Notice |
| Procurement type | Framework |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Competitive flexible procedure |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 29 May 2026 |
| Submission deadline | 12 Jun 2026 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 31 Mar 2027 - 31 Mar 2035 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £7,310,000 |
| Lots value | £7,310,000 |
| 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 | SONI LTD |
| Locality | BELFAST |
| Post town | Northern Ireland |
| Postcode | BT6 9RT |
| Country | Northern Ireland |
| ITL 1 | TLN Northern Ireland |
| ITL 2 | TLN0 Northern Ireland |
| ITL 3 | TLN0E Lisburn and Castlereagh |
| Local authority | Lisburn and Castlereagh |
| Electoral ward | Moneyreagh |
| Westminster constituency | Belfast South and Mid Down |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 09 - Petroleum products, fuel, electricity and other sources of energy
- 65 - Public utilities

### Codes

- 09000000 - Petroleum products, fuel, electricity and other sources of energy
- 65000000 - Public utilities

## Release History

- 29 May 2026 at 11:25 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/050801-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/050801-2026
  29th May 2026 - Tender notice on Find a Tender
- https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=642794
  Procurement Specific Questionnaire

## Notice URLs

- http://www.soni.ltd.uk
- 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-06a8c9. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-06a8c9.json.