Official UK procurement notice
SONI078 Low Carbon Inertia Services in Northern Ireland - Phase 2
Authority: SONI Ltd (Public body)
Sectors: Petroleum products, fuel, electricity and other sources of energy (09)Public utilities (65) Delivery: UK
Framework ceiling (notional)£7,310,000framework ceiling, not attributable revenue
Submissions closed 30 Jun 2026
Framework period 8 yrsends 31 Mar 2035 · starts 1 Apr 2027
What is being bought
Published requirement descriptionSONI 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.
- How the procedure runs: Procurement Specific Questionnaire
CPV: Petroleum products, fuel, electricity and other sources of energy · Public utilities
How this framework works
From the published notice- Type
- Closed framework
- Call-offs
- call-offs may be awarded directly or by further competition
- Places
- up to 5 suppliers
- Framework period
- 8 yrs from 1 Apr 2027
Published description of the framework
Refer to PSQ
The lotProcurement structure
single lot · value publishedLot #1Published value£7,310,000
Pre-qualification & selection criteria (PQQ)2
- Economic & financial standing
Refer to PSQ
- Technical & professional ability
Refer to PSQ
What it takes to wini
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Evaluation split and conditions of participation as published; the tender pack may add morei
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
How bids were scored
- Previous Experience: Candidates are required to demonstrate that they have sufficient recent and relevant experience to deliver contracts / projects of this nature, specifically relating to the generation of electricity, energy storage or provision of system services through a connection to an electricity transmission system.
- Financial & Legal Standing: Candidates must complete the Exclusionary Criteria Declaration satisfactorily. Candidates must complete the Self-Declaration questionnaire and provide details of turnover and profit.
- HSE, QA Cyber Security: Candidates must complete the relevant questionnaires
Conditions of participation2
- Economic & financial standing
Refer to PSQ
- Technical & professional ability
Refer to PSQ
What this means for your bid
- “SONI078 Low Carbon Inertia Services in Northern Ireland - Phase 2” is a framework: the contest is a place on its panel, up to 5 suppliers, not a single contract: call-offs may be direct or by further competition.
Procedure terms & legal framework
From the official record- Procedure method
- Competitive flexible procedure
- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Services
- Notice status
- Closed
- Procurement threshold
- Above threshold (FTS publication)
- Regulatory regime
- Utilities
- Commercial structure
- Framework agreement
- Who may use this agreement
- Not stated in the notice; call-off rights may be limited to the establishing authority
- Competition type
- Competitive procedure
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 29 May 2026, 12:25 BST
- Last source update
- 29 May 2026, 12:25 BST
- Award evaluation window
- Submission end – 31 Aug 2026
- Authority reference
SONI078- FTS notice number
2026/S 000-050801- Latest notice
- Tender notice (UK4)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-06a8c9Find a Tender
- How it runs
Procurement Specific Questionnaire
How it was run
Official notice- Requests to participate (first stage)
- 30 Jun 2026, 12:00 BST
- Appointment period ends
- 30 Jun 2026, 12:00 BST
- Clarification deadline
- 12 Jun 2026, 12:00 BST
- Electronic submission
- Allowed
- Accepted languages
- en
Detailed submission instructions & authority contactsFrom official release
Timeline
29 May 2026 → 1 Apr 2027 · 5 dates- Tender notice published145 days ago29 May 2026, 12:25 BST
- Clarification questions by131 days ago12 Jun 2026, 12:00 BST
- Admission / appointment period ends113 days ago · period end, not a bid countdown30 Jun 2026, 12:00 BST
- Award decision expected by50 days ago31 Aug 2026, 23:59 BST
- Today21 Oct 2026
- Contract startsin 162 days1 Apr 2027, 00:00 BST
Notice history
1 event · 1 release on Find a Tender- Tender notice published29 May 2026, 12:25 BSTUK4
Contracting authority & participating public bodies
Official documents & specifications (2)
Official links; attachments are not copiedTender pack and attachments
- Bidding documents and specifications Procurement Specific Questionnaire
Notices published for this procedure
- Tender notice Tender notice on Find a Tender