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Eastern Green Link 4 AC Digital Models Study

SCOTTISH POWER UK PLC

This public procurement record has 2 releases in its history.

TenderCancellation

14 Apr 2026 at 10:12

UK12 - Procurement Termination Notice
Planning

26 Mar 2026 at 13:14

UK3 - Planned Procurement Notice
Summary of the contracting process

The Eastern Green Link 4 AC Digital Models Study is a planned procurement initiative led by Scottish Power UK PLC and National Grid Electricity Transmission PLC. It falls under the services category, specifically feasibility study and advisory services, and is guided by UKPGA legislation. The procurement process aims to appoint a Study Contractor to develop and integrate AC network models, testing the EGL4 HVDC Link's control systems. This procurement operates under an open procedure, with submissions open until 11 June 2026. The study will be conducted in the United Kingdom, with the contract period scheduled from 1 November 2026 to 1 March 2031. Key dates include the enquiry period ending on 24 April 2026 and the award period concluding on 18 June 2026.

This tender promotes business growth opportunities in consulting and engineering sectors, particularly for firms specialising in utility services and digital modelling. It invites businesses capable of fulfilling technical and economic criteria set out in the pre-qualification questionnaire. Offering an opportunity to engage in a long-term project, businesses possessing expertise in AC network modelling and HVDC systems are well-positioned to benefit from this contract. Access to proprietary software tools such as DIgSILENT PowerFactory and PSCAD is essential, and collaboration with third-party plant owners via Non-Disclosure Agreements further enriches the initiative's scope for innovative solutions.

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Notice Information

Notice Title

Eastern Green Link 4 AC Digital Models Study

Notice Description

the Employer is looking to appoint a Study Contractor. The Study Contractor will in a First Stage, develop the AC network models, and in a Second Stage, will work with an HVDC Contractor to test the EGL4 HVDC Link control system. Below is a brief description of the scope. In the First Stage, the Employer will provide the Study Contractor with AC network model information in DIgSILENT PowerFactory and PSCAD software. By March 2028, the Study Contractor shall: * Perform multi-infeed interaction factor (MIIF) and unit interaction factor (UIF) studies, identify the AC network nodes remote from the EGL4 converter stations which can be reduced to network equivalents, and prepare PowerFactory and PSCAD models of AC network as viewed from the EGL4 converter stations. * Replace confidential AC network plant models in PowerFactory and PSCAD networks with generic plant models. The generic plant models shall be designed and parameterised to replicate the confidential plant model performance, and this will be evidenced by a validation report for the approval of both the Employer and the HVDC Contractor. * Be responsible for obtaining the Non-Disclosure Agreements where required from third-party plant owners. The HVDC Contractor will design and develop the EGL4 HVDC Link specific models, based on the AC network models containing equivalenced plant models received from the Study Contractor. The HVDC Contractor will then share the EGL4 HVDC Link specific models with the Study Contractor. In the Second Stage, the Study Contractor shall: * Test the EGL4 HVDC Link specific models after integrating them into the PowerFactory and PSCAD network models developed in the First Stage. * Work with the HVDC Contractor to resolve any further issues related to dynamic performance and tuning of the EGL4 HVDC Link control system.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-06751c
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/033590-2026
Current Stage
Tender
All Stages
Planning, Tender

Procurement Classification

Notice Type
UK12 - Procurement Termination Notice
Procurement Type
Standard
Procurement Category
Services
Procurement Method
Open
Procurement Method Details
Open procedure
Tender Suitability
Not specified
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

71 - Architectural, construction, engineering and inspection services

CPV Codes

71241000 - Feasibility study, advisory service, analysis

Notice Value(s)

Tender Value
Not specified
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
14 Apr 20265 months ago
Submission Deadline
Not specified
Future Notice Date
5 May 2026Expired
Award Date
Not specified
Contract Period
1 Nov 2026 - 1 Mar 2031 4-5 years
Recurrence
Not specified

Notice Status

Tender Status
Withdrawn
Lots Status
Withdrawn
Awards Status
Cancelled
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
SCOTTISH POWER UK PLC
Additional Buyers

NATIONAL GRID ELECTRICITY TRANSMISSION PLC

Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
GLASGOW
Postcode
G2 5AD
Postcode Area
Glasgow
Country
Scotland
Major Region (ITL 1)
TLM Scotland
Basic Region (ITL 2)
TLM3 West Central Scotland
Small Region (ITL 3)
TLM32 Glasgow City
Delivery Location
Not specified
Local Authority
Glasgow City
Electoral Ward
Anderston/City/Yorkhill
Westminster Constituency
Glasgow North

Further Information

Open Contracting Data Standard (OCDS)

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

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