RFP QuestBeta
OpenStage · tender

SCOTTISH HYDRO ELECTRIC TRANSMISSION PLC

FW Services - Specialist Engineering Services 1030

Engineering & ArchitectureCPV 71300000
Value£55.0m
Deadline
Published22 Sept 2025
RegionNationwide
Who to contact
Janis Hepburn
janis.hepburn@sse.com

The procurement contact named on the official notice.

Contract value in context
£55.0mtotal contract value
median £95k
this tender£0£59.4m

This is a large award for Engineering & Architecture — above three-quarters of comparable contracts. Based on 33,646 valued Engineering & Architecture tenders in our corpus.

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The brief

SSEN Transmission is the licence holder for the transmission system in the north of Scotland.

To meet the government’s target for renewable generation, and for the development of the existing infrastructure, significant work is being undertaken on the transmission system.

This work includes the building and rebuilding of overhead lines, the development of grid substations, the construction of HVDC converter and cable systems, and the construction of FACTS devices.

The projects and work being undertaken are in line with the NESO (National Electric System Operator) published Holistic Network Design (HND, Pathway to 2030 and Beyond 2030) reports.

SSEN Transmission is responsible for delivering the complex technology and network solutions relating to any Scottish Island or network solutions with offshore assets.

Particularly, any electricity system transmission infrastructure, either offshore or onshore, including HVDC, FACTs, AC networks, cable systems, and offshore installations The purpose of establishing this Services Framework is to ensure SSEN Transmission has access to a range of specialist engineering services.

The Services will include but not be limited to engineering competencies related to engineering management, engineering drawings, plant/equipment/system specification, electrical design, civil design, offshore installation design, offshore works, construction-site support, installation support, commissioning support, consent related works, engineering compliance, risk management, risk analysis, and design assurance.

The Consultant will be able to provide support during all project stages including concept, option selection, FEED, detailed design, manufacturing, testing, construction, installation, and commissioning stages.

The Services will be Lotted.

Lot 1: HVDC & FACTS: Expertise in all aspects of HVDC and FACTS devices.

Lot 2 :Cable Systems: Expertise in HV Cable Systems, covering both AC and DC technology for land and submarine applications.

Lot 3; AC Networks: Expertise in all aspects of AC Networks.

Lot 4: Offshore and Subsea Services: Expertise in preparing requirements and specification documents to provide technical direction and governance for the design, delivery, operation, maintenance, and decommissioning of offshore substation installations.

Key requirements

What the supplier must deliver

01

SSEN Transmission is responsible for delivering

SSEN Transmission is responsible for delivering the complex technology and network solutions relating to any Scottish Island or network solutions with offshore assets.

02

The purpose of establishing this Services Framework

The purpose of establishing this Services Framework is to ensure SSEN Transmission has access to a range of specialist engineering services.

03

The Consultant will be able to provide

The Consultant will be able to provide support during all project stages including concept, option selection, FEED, detailed design, manufacturing, testing, construction, installation, and commissioning stages.

04

Lot 4: Offshore and Subsea Services: Expertise

Lot 4: Offshore and Subsea Services: Expertise in preparing requirements and specification documents to provide technical direction and governance for the design, delivery, operation, maintenance, and decommissioning of offshore substation installations.

Derived from the notice text — always confirm against the original documents.

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Source & provenance
OCID
ocds-h6vhtk-055cfb
Stage
tender · Open
Source
Find a Tender
Buyer ref
058412-2025
View the original notice on Find a Tender

Contains public sector information licensed under the Open Government Licence v3.0. Source data © Crown copyright.

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