Buyer Name: SONI Ltd
Buyer Address: 12 Manse Road, Belfast, UKN0E, BT6 9RT, United Kingdom
Contact Email: tenders.SONI@soni.ltd.uk
SONI074 DS3 System Services – Volume Capped – Gate 14
Buyer Contact Info
Status
active
active
Procedure
open
open
Value
34450000.0 GBP
Gross: 41340004 GBP
34450000.0 GBP
Gross: 41340004 GBP
Published
12 Dec 2025, 09:47
12 Dec 2025, 09:47
Deadline
15 Jan 2026, 12:00
15 Jan 2026, 12:00
Contract Start
n/a
n/a
Contract End
n/a
n/a
Category
services
services
CPV
71314000 - Energy and related services
71314000 - Energy and related services
Region
n/a
n/a
Awarded To
n/a
n/a
Official Source
Open Find a Tender
Open Find a Tender
Description
Following review by the Regulatory Authorities of the TSOs’ Report on Ensuring a Secure, Reliable and Efficient Power System in July 2011 the TSOs were requested by the SEM Committee to put in place a programme of work to solve the challenges associated with increased levels of penetration of variable non-synchronous renewable generation.
Linked Documents
No linked documents found for this notice.
Opportunity Context
More Information Links
External Link: https://www.find-tender.service.gov.uk/Notice/082303-2025
Link Description: Tender notice on Find a Tender
Lots
Lot Title: POR L1NI - Primary Operating Reserve
Lot Description: Primary Operating Reserve or 'POR' has the meaning given to it in the grid code
Lot 1 Status: active
Lot 1 Value: GBP 2,870,833
Lot 1 Value (Gross): GBP 3,445,000
Lot 1 Contract Start: 2026-04-01T00:00:00+01:00
Lot 1 Contract End: 2026-09-30T23:59:59+01:00
Lot 1 SME Suitable: Yes
Lot 1 Award Criterion (quality): Technical Questionnaire
Lot 1 Award Criterion (quality): Legal
Lot Title: SOR L2NI - Secondary Operating Reserve
Lot Description: Secondary Operating reserve or 'SOR' has the meaning given to it in the grid code
Lot 2 Status: active
Lot 2 Value: GBP 2,870,833
Lot 2 Value (Gross): GBP 3,445,000
Lot 2 Contract Start: 2026-04-01T00:00:00+01:00
Lot 2 Contract End: 2026-09-30T23:59:59+01:00
Lot 2 SME Suitable: Yes
Lot 2 Award Criterion (quality): Technical Questionnaire
Lot 2 Award Criterion (quality): Legal
Lot Title: TOR1 L3NI - Tertiary 1 Operating Reserve
Lot Description: Tertiary 1 operating reserve or 'TOR1' has the meaning given to it in the grid code.
Lot 3 Status: active
Lot 3 Value: GBP 2,870,833
Lot 3 Value (Gross): GBP 3,445,000
Lot 3 Contract Start: 2026-04-01T00:00:00+01:00
Lot 3 Contract End: 2026-09-30T23:59:59+01:00
Lot 3 SME Suitable: Yes
Lot 3 Award Criterion (quality): Technical Questionnaire
Lot 3 Award Criterion (quality): Legal
Lot Title: TOR2 L4NI - Tertiary 2 Operating Reserve
Lot Description: Tertiary 2 operating reserve or 'TOR2' has the meaning given to it in the grid code
Lot 4 Status: active
Lot 4 Value: GBP 2,870,833
Lot 4 Value (Gross): GBP 3,445,000
Lot 4 Contract Start: 2026-04-01T00:00:00+01:00
Lot 4 Contract End: 2026-09-30T23:59:59+01:00
Lot 4 SME Suitable: Yes
Lot 4 Award Criterion (quality): Technical Questionnaire
Lot 4 Award Criterion (quality): Legal
Lot Title: RRD L5NI - Replacement Reserve (De-Synchronised)
Lot Description: RR (De-synchronised)' means replacement reserve provided by the providing unit when: (i) not Synchronised to the power system in the case of a synchronous providing unit, or (ii) when connected to the power system and operating at a level less or equal to 0 MW in the case of an energy storage providing unit, or (ii) when connected to the power system in the case of a demand side unit
Lot 5 Status: active
Lot 5 Value: GBP 2,870,833
Lot 5 Value (Gross): GBP 3,445,000
Lot 5 Contract Start: 2026-04-01T00:00:00+01:00
Lot 5 Contract End: 2026-09-30T23:59:59+01:00
Lot 5 SME Suitable: Yes
Lot 5 Award Criterion (quality): Technical Questionnaire
Lot 5 Award Criterion (quality): Legal
Lot Title: RRS L6NI - Replacement Reserve (Synchronised)
Lot Description: RR (Synchronised)' means Replacement Reserve provided by the Providing Unit when: (i) synchronised to the power system in the case of a synchronous providing unit, or (ii) when connected to the power system and operating at a level greater than 0 MW in the case of an energy storage providing unit or power park module. II.2.5) Award criteria
Lot 6 Status: active
Lot 6 Value: GBP 2,870,833
Lot 6 Value (Gross): GBP 3,445,000
Lot 6 Contract Start: 2026-04-01T00:00:00+01:00
Lot 6 Contract End: 2026-09-30T23:59:59+01:00
Lot 6 SME Suitable: Yes
Lot 6 Award Criterion (quality): Technical Questionnaire
Lot 6 Award Criterion (quality): Legal
Lot Title: SSRP L7NI - Steady State Reactive Power
Lot Description: Steady-state reactive power or 'SSRP' means reactive power capability (Leading) and reactive power capability
Lot 7 Status: active
Lot 7 Value: GBP 2,870,833
Lot 7 Value (Gross): GBP 3,445,000
Lot 7 Contract Start: 2026-04-01T00:00:00+01:00
Lot 7 Contract End: 2026-09-30T23:59:59+01:00
Lot 7 SME Suitable: Yes
Lot 7 Award Criterion (quality): Technical Questionnaire
Lot 7 Award Criterion (quality): Legal
Lot Title: SIR L8NI - Synchronous Inertial Respons
Lot Description: Synchronous Inertial Response (SIR) is the kinetic energy (at a Frequency of 50 Hz) of a centrally dispatched synchronous providing unit multiplied by the SIR factor (SIRF)
Lot 8 Status: active
Lot 8 Value: GBP 2,870,833
Lot 8 Value (Gross): GBP 3,445,000
Lot 8 Contract Start: 2026-04-01T00:00:00+01:00
Lot 8 Contract End: 2026-09-30T23:59:59+01:00
Lot 8 SME Suitable: Yes
Lot 8 Award Criterion (quality): Technical Questionnaire
Lot Title: RM1 L9NI - Ramping Margin 1 Hour
Lot Description: Ramping Margin 1 is the increased MW Output and/or MW Reduction that a providing unit can provide to the company within one hour of the company issuing a dispatch instruction to a service provider and that the providing unit can maintain for a further two hours after the one hour period has elapsed. It is limited by the lowest availability in that three hour period.
Lot 9 Status: active
Lot 9 Value: GBP 2,870,833
Lot 9 Value (Gross): GBP 3,445,000
Lot 9 Contract Start: 2026-04-01T00:00:00+01:00
Lot 9 Contract End: 2026-09-30T23:59:59+01:00
Lot 9 SME Suitable: Yes
Lot 9 Award Criterion (quality): Technical Questionnaire
Lot 9 Award Criterion (quality): Legal
Lot Title: RM3 L10NI - Ramping Margin 3 Hour
Lot Description: Ramping Margin 3 is the increased MW Output and/or MW reduction that a providing unit can provide to the company within three hours of the company issuing a dispatch instruction to a service provider and that the providing unit can maintain for a further 5 hours after the 3 hour period has elapsed. It is limited by the lowest availability in that 8 hour period
Lot 10 Status: active
Lot 10 Value: GBP 2,870,833
Lot 10 Value (Gross): GBP 3,445,000
Lot 10 Contract Start: 2026-04-01T00:00:00+01:00
Lot 10 Contract End: 2026-09-30T23:59:59+01:00
Lot 10 SME Suitable: Yes
Lot 10 Award Criterion (quality): Technical Questionnaire
Lot 10 Award Criterion (quality): Legal
Lot Title: RM8 L11NI - Ramping Margin 8 Hour
Lot Description: Ramping Margin 8 is the increased MW Output and/or MW reduction that a providing unit can provide to the company within eight hours of the company issuing a dispatch instruction to a service provider and that the providing unit can maintain for a further 8 hours after the 8 hour period has elapsed. It is limited by the lowest availability in that 16 hour period.
Lot 11 Status: active
Lot 11 Value: GBP 2,870,833
Lot 11 Value (Gross): GBP 3,445,000
Lot 11 Contract Start: 2026-04-01T00:00:00+01:00
Lot 11 Contract End: 2026-09-30T23:59:59+01:00
Lot 11 SME Suitable: Yes
Lot 11 Award Criterion (quality): Technical Questionnaire
Lot 11 Award Criterion (quality): Legal
Lot Title: FFR L12NI - Fast Frequency Response
Lot Description: Fast Frequency Response (FFR) is the additional MW Output or MW reduction required compared to the pre- incident MW output or MW reduction, which is fully available from a providing unit within 2 seconds after the start of an event and sustainable up to 10 seconds after the start of the event.
Lot 12 Status: active
Lot 12 Value: GBP 2,870,837
Lot 12 Value (Gross): GBP 3,445,004
Lot 12 Contract Start: 2026-04-01T00:00:00+01:00
Lot 12 Contract End: 2026-09-30T23:59:59+01:00
Lot 12 SME Suitable: Yes
Lot 12 Award Criterion (quality): Technical Questionnaire
Lot 12 Award Criterion (quality): Legal
Documents
Document Description: Not published
Document Description: Tender notice on Find a Tender
Raw Notice JSON
Expand raw payload
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"name": "Legal",
"type": "quality"
}
],
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},
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"endDate": "2026-09-30T23:59:59+01:00",
"maxExtentDate": "2026-12-31T23:59:59+00:00",
"startDate": "2026-04-01T00:00:00+01:00"
},
"description": "Steady-state reactive power or \u0027SSRP\u0027 means reactive power capability (Leading) and reactive power capability",
"hasRenewal": true,
"id": "7",
"renewal": {
"description": "Option for TSO to extend the term of its Contract in respect of any or all of its applicable Lots in certain defined cases, at the discretion of the Contracting Entity. This option might apply where, for instance, there is a delay in completing the procurement for any subsequent phases envisaged under the DS3 Programme."
},
"selectionCriteria": {
"criteria": [
{
"description": "Please refer to Request for Proposal",
"type": "economic"
},
{
"description": "Please refer to Technical Questionnaire",
"type": "technical"
}
]
},
"status": "active",
"suitability": {
"sme": true
},
"title": "SSRP L7NI - Steady State Reactive Power",
"value": {
"amount": 2870833,
"amountGross": 3445000,
"currency": "GBP"
}
},
{
"awardCriteria": {
"criteria": [
{
"description": "Refer to RFP",
"name": "Technical Questionnaire",
"type": "quality"
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"contractPeriod": {
"endDate": "2026-09-30T23:59:59+01:00",
"maxExtentDate": "2026-12-31T23:59:59+00:00",
"startDate": "2026-04-01T00:00:00+01:00"
},
"description": "Synchronous Inertial Response (SIR) is the kinetic energy (at a Frequency of 50 Hz) of a centrally dispatched synchronous providing unit multiplied by the SIR factor (SIRF)",
"hasRenewal": true,
"id": "8",
"renewal": {
"description": "Option for TSO to extend the term of its Contract in respect of any or all of its applicable Lots in certain defined cases, at the discretion of the Contracting Entity. This option might apply where, for instance, there is a delay in completing the procurement for any subsequent phases envisaged under the DS3 Programme."
},
"selectionCriteria": {
"criteria": [
{
"description": "Please refer to Request for Proposal",
"type": "economic"
},
{
"description": "Please refer to Technical Questionnaire",
"type": "technical"
}
]
},
"status": "active",
"suitability": {
"sme": true
},
"title": "SIR L8NI - Synchronous Inertial Respons",
"value": {
"amount": 2870833,
"amountGross": 3445000,
"currency": "GBP"
}
},
{
"awardCriteria": {
"criteria": [
{
"description": "Refer to RFP",
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{
"description": "Refer to RFP",
"name": "Legal",
"type": "quality"
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"contractPeriod": {
"endDate": "2026-09-30T23:59:59+01:00",
"maxExtentDate": "2026-12-31T23:59:59+00:00",
"startDate": "2026-04-01T00:00:00+01:00"
},
"description": "Ramping Margin 1 is the increased MW Output and/or MW Reduction that a providing unit can provide to the company within one hour of the company issuing a dispatch instruction to a service provider and that the providing unit can maintain for a further two hours after the one hour period has elapsed. It is limited by the lowest availability in that three hour period.",
"hasRenewal": true,
"id": "9",
"renewal": {
"description": "Option for TSO to extend the term of its Contract in respect of any or all of its applicable Lots in certain defined cases, at the discretion of the Contracting Entity. This option might apply where, for instance, there is a delay in completing the procurement for any subsequent phases envisaged under the DS3 Programme."
},
"selectionCriteria": {
"criteria": [
{
"description": "Please refer to Request for Proposal",
"type": "economic"
},
{
"description": "Please refer to Technical Questionnaire",
"type": "technical"
}
]
},
"status": "active",
"suitability": {
"sme": true
},
"title": "RM1 L9NI - Ramping Margin 1 Hour",
"value": {
"amount": 2870833,
"amountGross": 3445000,
"currency": "GBP"
}
},
{
"awardCriteria": {
"criteria": [
{
"description": "Refer to RFP",
"name": "Technical Questionnaire",
"type": "quality"
},
{
"description": "Refer to RFP",
"name": "Legal",
"type": "quality"
}
],
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"contractPeriod": {
"endDate": "2026-09-30T23:59:59+01:00",
"maxExtentDate": "2026-12-31T23:59:59+00:00",
"startDate": "2026-04-01T00:00:00+01:00"
},
"description": "Ramping Margin 3 is the increased MW Output and/or MW reduction that a providing unit can provide to the company within three hours of the company issuing a dispatch instruction to a service provider and that the providing unit can maintain for a further 5 hours after the 3 hour period has elapsed. It is limited by the lowest availability in that 8 hour period",
"hasRenewal": true,
"id": "10",
"renewal": {
"description": "Option for TSO to extend the term of its Contract in respect of any or all of its applicable Lots in certain defined cases, at the discretion of the Contracting Entity. This option might apply where, for instance, there is a delay in completing the procurement for any subsequent phases envisaged under the DS3 Programme."
},
"selectionCriteria": {
"criteria": [
{
"description": "Please refer to Request for Proposal",
"type": "economic"
},
{
"description": "Please refer to Technical Questionnaire",
"type": "technical"
}
]
},
"status": "active",
"suitability": {
"sme": true
},
"title": "RM3 L10NI - Ramping Margin 3 Hour",
"value": {
"amount": 2870833,
"amountGross": 3445000,
"currency": "GBP"
}
},
{
"awardCriteria": {
"criteria": [
{
"description": "Refer to RFP",
"name": "Technical Questionnaire",
"type": "quality"
},
{
"description": "Refer to RFP",
"name": "Legal",
"type": "quality"
}
],
"weightingDescription": "Technical Compliance and Legal "
},
"contractPeriod": {
"endDate": "2026-09-30T23:59:59+01:00",
"maxExtentDate": "2026-12-31T23:59:59+00:00",
"startDate": "2026-04-01T00:00:00+01:00"
},
"description": "Ramping Margin 8 is the increased MW Output and/or MW reduction that a providing unit can provide to the company within eight hours of the company issuing a dispatch instruction to a service provider and that the providing unit can maintain for a further 8 hours after the 8 hour period has elapsed. It is limited by the lowest availability in that 16 hour period.",
"hasRenewal": true,
"id": "11",
"renewal": {
"description": "Option for TSO to extend the term of its Contract in respect of any or all of its applicable Lots in certain defined cases, at the discretion of the Contracting Entity. This option might apply where, for instance, there is a delay in completing the procurement for any subsequent phases envisaged under the DS3 Programme."
},
"selectionCriteria": {
"criteria": [
{
"description": "Please refer to Request for Proposal",
"type": "economic"
},
{
"description": "Please refer to Technical Questionnaire",
"type": "technical"
}
]
},
"status": "active",
"suitability": {
"sme": true
},
"title": "RM8 L11NI - Ramping Margin 8 Hour",
"value": {
"amount": 2870833,
"amountGross": 3445000,
"currency": "GBP"
}
},
{
"awardCriteria": {
"criteria": [
{
"description": "Refer to RFP",
"name": "Technical Questionnaire",
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},
{
"description": "Refer to RFP",
"name": "Legal",
"type": "quality"
}
],
"weightingDescription": "Technical Compliance and Legal "
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"contractPeriod": {
"endDate": "2026-09-30T23:59:59+01:00",
"maxExtentDate": "2026-12-31T23:59:59+00:00",
"startDate": "2026-04-01T00:00:00+01:00"
},
"description": "Fast Frequency Response (FFR) is the additional MW Output or MW reduction required compared to the pre- incident MW output or MW reduction, which is fully available from a providing unit within 2 seconds after the start of an event and sustainable up to 10 seconds after the start of the event.",
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"id": "12",
"renewal": {
"description": "Option for TSO to extend the term of its Contract in respect of any or all of its applicable Lots in certain defined cases, at the discretion of the Contracting Entity. This option might apply where, for instance, there is a delay in completing the procurement for any subsequent phases envisaged under the DS3 Programme."
},
"selectionCriteria": {
"criteria": [
{
"description": "Please refer to Request for Proposal",
"type": "economic"
},
{
"description": "Please refer to Technical Questionnaire",
"type": "technical"
}
]
},
"status": "active",
"suitability": {
"sme": true
},
"title": "FFR L12NI - Fast Frequency Response",
"value": {
"amount": 2870837,
"amountGross": 3445004,
"currency": "GBP"
}
}
],
"mainProcurementCategory": "services",
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"procurementMethodDetails": "Open procedure",
"specialRegime": [
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],
"status": "active",
"submissionMethodDetails": "www.mytenders.co.uk",
"submissionTerms": {
"electronicSubmissionPolicy": "allowed",
"languages": [
"en"
]
},
"tenderPeriod": {
"endDate": "2026-01-15T12:00:00+00:00"
},
"title": "SONI074 DS3 System Services \u2013 Volume Capped \u2013 Gate 14",
"value": {
"amount": 34450000,
"amountGross": 41340004,
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}
}
}