RFP QuestBeta
Awarded · ResultStage · award

Ofgem

2025-122- Cost Assessment Advisors to OFTO team for Tender and Policy

Business Services
ValueValue not published
Awarded23 Jul 2026
Published24 Jul 2026
RegionNationwide
Outcome — awarded
Grant Thornton UK Advisory & Tax LLP
Awarded value£1.7m
Award date23 Jul 2026

This is a contract result notice, not an open opportunity. Details from the official award data.

Who to contact
Andrew Witcombe
procurement2@ofgem.gov.uk

The procurement contact named on the official notice.

The brief

Ofgem is looking to procure the necessary Cost Assessment advisors for the Offshore Transmission Owners (OFTO) team to continue its regulatory duties.

Provision of these services will be crucial and without this, Ofgem will be unable to run effective tender processes for the upcoming tender rounds.

Ofgem are required to run a tender exercise for all offshore transmission projects that qualify under the Tender Regulations 2015.

Provision of Cost Assessment consultancy support services will be crucial to ensure that a robust tender process takes place for upcoming tender rounds and without this, Ofgem will be unable to run an effective tender process.

To facilitate a robust tender evaluation process, Ofgem requires the services of a supplier on various aspects of the tender and transaction process - evaluation of bidder submissions, and financial assessment required to bring the project to close/appoint an OFTO.

Ofgem are required to undertake a cost assessment review of the OFTO assets for those projects that will be the subject of the tender process.

This review is fundamental in determining the cost of building the transmission assets to ensure that those costs stated by the developer fairly reflect what will be transferred and that consumers are receive value for money.

With this being the case, data submitted by the project developer must be carefully evaluated to ensure that assets are being transferred in the most economic and efficient manner possible.

Key requirements

What the supplier must deliver

01

Ofgem are required to run a tender

Ofgem are required to run a tender exercise for all offshore transmission projects that qualify under the Tender Regulations 2015.

02

Provision of Cost Assessment consultancy support services

Provision of Cost Assessment consultancy support services will be crucial to ensure that a robust tender process takes place for upcoming tender rounds and without this, Ofgem will be unable to run an effective tender process.

03

Evaluation of bidder submissions, and financial assessment

evaluation of bidder submissions, and financial assessment required to bring the project to close/appoint an OFTO.

04

Ofgem are required to undertake a cost

Ofgem are required to undertake a cost assessment review of the OFTO assets for those projects that will be the subject of the tender process.

05

This review is fundamental in determining

This review is fundamental in determining the cost of building the transmission assets to ensure that those costs stated by the developer fairly reflect what will be transferred and that consumers are receive value for money.

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

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Source & provenance
OCID
ocds-h6vhtk-0689c7
Stage
award · Awarded
Source
Find a Tender
Buyer ref
070373-2026
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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