--- title: "SONI085 DS3 - Gate 15" ocid: "ocds-h6vhtk-06b27f" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06b27f" markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-06b27f.md" json_url: "https://d3tenders.com/contract/ocds-h6vhtk-06b27f.json" source: "Find A Tender Service" current_stage: "Tender" buyer: "SONI LTD" published: "2026-06-25" --- # SONI085 DS3 - Gate 15 Buyer: SONI LTD Current stage: Tender OCID: ocds-h6vhtk-06b27f [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06b27f) [Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-06b27f.json) ## Summary SONI Ltd, based in Belfast, is actively seeking participants for the procurement titled "SONI085 DS3 - Gate 15". This falls under the energy and related services industry, encompassing locations across the United Kingdom with adherence to Northern Irish devolved regulations. The procurement stage is currently at the tender update phase with key upcoming dates including an expression of interest deadline on 17th July 2026 and an enquiry period ending on 6th July 2026. The tender aims to establish a qualification system for the provision of DS3 System Services and involves a competitive flexible procedure under a selective procurement method, culminating in contract awards pending regulatory approval by Northern Irish authorities. This tender presents a significant opportunity for businesses specialising in energy services, particularly those focusing on system operation reserves. Given the procurement's total estimated value of £45,367,945.76, small and medium-sized enterprises (SMEs) can compete effectively, especially entities with expertise in technical compliance and legal frameworks. With multiple lots available offering varied scopes of work, businesses with the capacity to meet technical and economic selection criteria will find this an advantageous opportunity for growth and expansion within Northern Ireland's utility service sector. The competitive nature and scale of the procurement process potentially allow a diverse range of service providers to enhance their market presence and drive business development. ## Notice The procurement process is part of a structured process to aid SONI Limited ("SONI") in the selection of companies for inclusion on the Qualification System for the provision of DS3 System Services and the award of contracts subject to approval of the Regulatory Authorities Northern Ireland respectively. Refer to Qualification briefing document for full details. ### Lot Information POR L1NI Primary Operating Reserve SOR L2NI Secondary Operating Reserve TOR1 L3NI Tertiary 1 Operating Reserve TOR2 L4NI Tertiary 2 Operating Reserve RRD L5NI Replacement Reserve (De-Synchronised) RRS L6NI Replacement Reserve (Synchronised) SSRP L7NI Steady State Reactive Power SIR L8NI Synchronous Inertial Response RM1 L9NI Ramping Margin 1 Hour RM3 L10NI Ramping Margin 3 Hour RM8 L11NI Ramping Margin 8 Hour FFR L12NI Fast Frequency Response ## Key Details | Field | Value | | --- | --- | | Publication source | Find A Tender Service | | Latest notice | https://www.find-tender.service.gov.uk/Notice/059747-2026 | | Notice type | UK4 - Tender Notice | | Procurement type | Standard | | 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 | 25 Jun 2026 | | Submission deadline | 6 Jul 2026 | | Future notice date | Not specified | | Award date | Not specified | | Contract period | 30 Sep 2026 - 31 Mar 2027 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £37,806,621 | | Lots value | £37,806,615 | | 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 - 71 - Architectural, construction, engineering and inspection services ### Codes - 71314000 - Energy and related services ## Release History - 25 Jun 2026 at 10:07 - TenderUpdate - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/059747-2026 - 22 Jun 2026 at 07:54 - TenderUpdate - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/058313-2026 - 18 Jun 2026 at 14:07 - TenderUpdate - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/057667-2026 - 11 Jun 2026 at 09:21 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/055038-2026 ## Documents - https://www.find-tender.service.gov.uk/Notice/059747-2026 25th June 2026 - Tender notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/058313-2026 22nd June 2026 - Tender notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/057667-2026 18th June 2026 - Tender notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/055038-2026 11th June 2026 - Tender notice on Find a Tender - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=644160 Full briefing document for Tender - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=644162 Important notice for tender submission - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=644163 Regulated Arrangements - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=644164 Performance Measurement Device - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=644165 Proven Technology List - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=644166 New Signals Requirements - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=644167 Protocol Document - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=644168 Technical Questionnaire - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=645115 Qualification System Briefing Document - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=645582 Bidders Information Session - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=645872 Updated DS3 Bidders Information Session ## 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-06b27f. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-06b27f.json.