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Tenfell
Awarded contract
Published 25 Mar 2026

SONI074 DS3 System Services – Volume Capped – Gate 14

SONI Ltd · Northern Ireland

Key facts

Awarded
09 Mar 2026
Contract starts
07 Apr 2026
Contract ends
30 Sep 2026
Procedure
Open procedure
Buyer type
Utilities & transport

Awarded to 5 suppliers

SupplierValue
Altamuskin Windfarm Limited—
Orsted Onshore UK Limited—
Wheelhouse energy (NI) Limited—
GridBeyond (formerly Endeco Technologies Ltd)—
Powerhouse Generation Limited—

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. 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, system tools and system performance to meet the challenges of operating the electricity system in a secure manner while achieving the 2020 renewable electricity targets. A key aspect of this operational challenge is the increase of System Non- Synchronous Penetration (SNSP) from the 2011 limit of 50% to 75%.

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