---
title: "2025-071 Needs Case Review Assessment of Third Window Interconnector Projects"
ocid: "ocds-b5fd17-192ff5a6-74b1-4e46-adec-3df9337477a6"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-192ff5a6-74b1-4e46-adec-3df9337477a6"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-192ff5a6-74b1-4e46-adec-3df9337477a6.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-192ff5a6-74b1-4e46-adec-3df9337477a6.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "OFGEM"
published: "2025-12-04"
---

# 2025-071 Needs Case Review Assessment of Third Window Interconnector Projects

Buyer: OFGEM  
Current stage: Award  
OCID: ocds-b5fd17-192ff5a6-74b1-4e46-adec-3df9337477a6

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## Summary

The procurement process overseen by Ofgem involves the award for the "2025-071 Needs Case Review Assessment of Third Window Interconnector Projects." This contract falls under the industry category of project management consultancy services, along with business and management consultancy services. The procurement concerns services related to electricity market modelling, essential for ensuring continued value for money of specific interconnector projects. Ofgem, located in London, has completed the award stage for this project. The procurement was conducted using an open procedure and has a contract period from 24th November 2025 to 31st May 2026, with a contract value of £150,000. It is structured to accommodate SMEs with a suitability for them but excludes VCSE entities.

Businesses specialising in project management and consultancy services will find significant opportunities in this tender, particularly those with expertise in energy market modelling and analysis. Firms like Ove Arup & Partners Ltd, which was successful in securing this contract, will benefit from demonstrating comprehensive understanding in assessing economic impacts within specified energy scenarios. This contract presents a notable chance to contribute to the UK's energy infrastructure, targeting businesses with proficiency in strategic consultancy and project management. The location flexibility ranging from the UK to global regions further extends the scope for varied business engagement. Companies looking to expand within the consultancy domain should consider similar opportunities to foster business growth through impactful projects like this.

## Notice

In November 2024, following its Initial Project Assessment (IPA), Ofgem awarded a cap and floor regime in principle to three electricity interconnectors of the Third Window (W3). Ofgem now requires support from a supplier to conduct electricity market modelling to analyse the economic impacts of an interconnector project to ensure it is still offering value for money. The supplier will be required to undertake the analysis for this project under a set of three Future Energy Scenarios (FES) and one weather year.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/5b0adaa9-2cb7-4b7b-9c13-1a9e2cc1e713 |
| Notice type | Award Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Open |
| Procurement method details | Open procedure |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 4 Dec 2025 |
| Submission deadline | 1 Jan 2025 |
| Future notice date | Not specified |
| Award date | 19 Nov 2025 |
| Contract period | 24 Nov 2025 - 31 May 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £150,000 |
| Lots value | Not specified |
| Awards value | £150,000 |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Not specified |
| Awards status | Active |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | OFGEM |
| Locality | LONDON |
| Post town | East London |
| Postcode | E14 4PU |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI4 Inner London - East |
| ITL 3 | TLI42 Tower Hamlets |
| Local authority | Tower Hamlets |
| Electoral ward | Canary Wharf |
| Westminster constituency | Poplar and Limehouse |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | OVE ARUP & PARTNERS |

## CPV Codes

### Divisions

- 72 - IT services: consulting, software development, Internet and support
- 79 - Business services: law, marketing, consulting, recruitment, printing and security

### Codes

- 72224000 - Project management consultancy services
- 79400000 - Business and management consultancy and related services
- 79410000 - Business and management consultancy services
- 79411100 - Business development consultancy services

## Release History

- 4 Dec 2025 at 17:45 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/5b0adaa9-2cb7-4b7b-9c13-1a9e2cc1e713

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/5b0adaa9-2cb7-4b7b-9c13-1a9e2cc1e713
  4th December 2025 - Awarded contract notice on Contracts Finder
- https://www.mytenders.co.uk/search/show/search_view.aspx?ID=DEC170677
  NOTE: To register your interest in this notice and obtain any additional information please visit the myTenders Web Site at the link provided.

## Notice URLs

- http://www.ofgem.gov.uk

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-b5fd17-192ff5a6-74b1-4e46-adec-3df9337477a6. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-192ff5a6-74b1-4e46-adec-3df9337477a6.json.