SONI074 DS3 System Services – Volume Capped – Gate 14
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. In response the TSOs formally commenced the DS3 Programme in September 2011. The overall aim of the DS3 Programme is to put in place the required changes to system policies, syste...
Buyer
SONI Ltd
Value
£2,468,357
Published
25 Mar 2026
Closes
15 Jan 2026
Procurement details
Source
Find a Tender
Region
UKN0E
Procurement method
Open
Category
Services
Contract starts
7 Apr 2026
Contract ends
30 Sept 2026
CPV classifications
71314000
Energy and related services
Lots
Lot 1 POR L1NI - Primary Operating Reserve
£2,870,833
Primary Operating Reserve or 'POR' has the meaning given to it in the grid code
Delivery: UKN · United Kingdom
Lot 2 SOR L2NI - Secondary Operating Reserve
£2,870,833
Secondary Operating reserve or 'SOR' has the meaning given to it in the grid code
Delivery: UKN · United Kingdom
Lot 3 TOR1 L3NI - Tertiary 1 Operating Reserve
£2,870,833
Tertiary 1 operating reserve or 'TOR1' has the meaning given to it in the grid code.
Delivery: UKN · United Kingdom
Lot 4 TOR2 L4NI - Tertiary 2 Operating Reserve
£2,870,833
Tertiary 2 operating reserve or 'TOR2' has the meaning given to it in the grid code
Delivery: UKN · United Kingdom
Lot 5 RRD L5NI - Replacement Reserve (De-Synchronised)
£2,870,833
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...
Delivery: UKN · United Kingdom
Lot 6 RRS L6NI - Replacement Reserve (Synchronised)
£2,870,833
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
Delivery: UKN · United Kingdom
Lot 7 SSRP L7NI - Steady State Reactive Power
£2,870,833
Steady-state reactive power or 'SSRP' means reactive power capability (Leading) and reactive power capability
Delivery: UKN · United Kingdom
Lot 8 SIR L8NI - Synchronous Inertial Respons
£2,870,833
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)
Delivery: UKN · United Kingdom
Lot 9 RM1 L9NI - Ramping Margin 1 Hour
£2,870,833
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...
Delivery: UKN · United Kingdom
Lot 10 RM3 L10NI - Ramping Margin 3 Hour
£2,870,833
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 peri...
Delivery: UKN · United Kingdom
Lot 11 RM8 L11NI - Ramping Margin 8 Hour
£2,870,833
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 per...
Delivery: UKN · United Kingdom
Lot 12 FFR L12NI - Fast Frequency Response
£2,870,837
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.
Delivery: UKN · United Kingdom
Documents
Unlock document linkTender notice on Find a Tender
12 Dec 2025
Tender notice on Find a Tender
Tender notice · UK4 · Web page
Contract award notice on Find a Tender
25 Mar 2026
Contract award notice on Find a Tender
Award notice · UK6 · Web page
Contains public sector information licensed under the Open Government Licence v3.0.