---
title: "Auditors for the Renewables Obligation (RO) Cost to Exchequer"
ocid: "ocds-b5fd17-b6df5670-4671-4386-bdd0-8225c81e9d39"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-b6df5670-4671-4386-bdd0-8225c81e9d39"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-b6df5670-4671-4386-bdd0-8225c81e9d39.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-b6df5670-4671-4386-bdd0-8225c81e9d39.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "DESNZ"
published: "2026-08-25"
---

# Auditors for the Renewables Obligation (RO) Cost to Exchequer

Buyer: DESNZ  
Current stage: Award  
OCID: ocds-b5fd17-b6df5670-4671-4386-bdd0-8225c81e9d39

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## Summary

The Department for Energy Security and Net Zero (DESNZ) procured independent audit and assurance services for the Renewables Obligation (RO) Cost to Exchequer. The work is to verify that RO cost reductions funded by the Exchequer are applied accurately by energy suppliers and passed through to consumers. This is an energy and related services requirement, with the main category being professional services. Delivery covers the United Kingdom, the Channel Islands, the Isle of Man, British Overseas Territories, Europe and the rest of the world. The buyer is based in London. The requirement is relevant to audit, assurance and financial review businesses with experience of energy suppliers, regulated energy schemes, public funding and checking that cost reductions are correctly calculated and transferred to consumers.

The procurement is complete and was awarded through a selective call-off from a framework agreement. The tender deadline was 22 April 2026 at 12:00. The award was made on 8 June 2026. The contract runs from 5 August 2026 to 5 August 2027. The awarded value is £3,000,000. Grant Thornton UK LLP is the primary supplier and PricewaterhouseCoopers LLP is the secondary supplier. The published award covers both suppliers. The opportunity was identified as suitable for small and medium-sized enterprises and not reserved for voluntary, community or social enterprises. The evaluation basis is reflected through the framework call-off route, with the selected suppliers providing the required audit and assurance capability for the specified energy-cost verification work.

This award demonstrates demand from DESNZ for independent assurance of how energy suppliers apply and pass on government-funded reductions under the Renewables Obligation. Businesses competing when this requirement returns would need credible audit and assurance capability, supported by robust financial controls, evidence-based testing and the ability to review supplier calculations and downstream consumer pass-through. Experience of the energy market, regulated obligations, public-sector assurance or complex multi-party financial flows would be directly relevant. Suppliers would also need sufficient capacity to work across the United Kingdom, the Channel Islands, the Isle of Man, British Overseas Territories, Europe and other international locations covered by the requirement. The procurement was considered suitable for SMEs, so specialist firms with the necessary expertise and delivery capacity may be well placed to compete.

## Notice

Provision of independent audit and assurance services to verify that Renewable Obligations (RO) cost reductions funded by the Exchequer have been accurately applied by energy suppliers and passed through to consumers

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/ffa9dd6c-4d02-4c37-8587-f85118c9a6a1 |
| Notice type | Award Notice |
| Procurement type | Framework |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Call-off from a framework agreement |
| Tender suitability | SME |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 25 Aug 2026 |
| Submission deadline | 22 Apr 2026 |
| Future notice date | Not specified |
| Award date | 8 Jun 2026 |
| Contract period | 5 Aug 2026 - 5 Aug 2027 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £3,000,000 |
| Lots value | Not specified |
| Awards value | £3,000,000 |
| 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 | DESNZ |
| Locality | LONDON |
| Postcode area | South West London |
| Postcode | SW1A 2EG |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI35 Westminster and City of London |
| Local authority | Westminster |
| Electoral ward | St James's |
| Westminster constituency | Cities of London and Westminster |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 2 |
| Supplier names | Grant Thornton UK LLP; PricewaterhouseCoopers LLP |

## CPV Codes

### Divisions

- 71 - Architectural, construction, engineering and inspection services

### Codes

- 71314000 - Energy and related services

## Release History

- 25 Aug 2026 at 14:31 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/ffa9dd6c-4d02-4c37-8587-f85118c9a6a1

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/ffa9dd6c-4d02-4c37-8587-f85118c9a6a1
  25th August 2026 - Awarded contract notice on Contracts Finder
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/d90a8cc9-f0e5-4bad-96c0-5c52f232a8ef
  n/a
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/088fa407-e429-4c4e-8226-fadb60278c6a
  n/a

## 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-b6df5670-4671-4386-bdd0-8225c81e9d39. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-b6df5670-4671-4386-bdd0-8225c81e9d39.json.