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NDRHI & GGSS Statistical and Targeted Audits

Ofgem

This public procurement record has 3 releases in its history.

Award

11 Sep 2026 at 17:00

UK6 - Contract Award Notice
TenderUpdate

26 Jun 2026 at 14:19

UK4 - Tender Notice
Tender

05 Jun 2026 at 12:04

UK4 - Tender Notice
Summary of the contracting process

Ofgem commissioned technical site audits for the Non-Domestic Renewable Heat Incentive (NDRHI) and Green Gas Support Scheme (GGSS), covering installations and participants across the UK. The appointed audit contractor is expected to verify information supplied to Ofgem, assess compliance with published guidance, agreed procedures and scheme requirements, identify non-compliance and fraud, and detect poor practice that could lead to inaccurate information. Auditors will need to understand both schemes and apply mechanical services expertise during site visits, including assessing whether installations and participants comply with relevant legislation. The procurement is for environmental auditing services, including corporate and activity-specific audits. Ofgem is the public authority buying and managing the service.

The procurement is complete and the contract was awarded to WSP UK Limited on 10 September 2026; the award was recorded as pending, with a scheduled signature date of 28 September 2026. One supplier submitted the final bid. Ofgem used an open procedure, with submissions in English through the MyTenders portal. Evaluation weighted technical questions and presentation at 80%, and audit, start-up and mobilisation costs at 20%. The awarded value is £792,000 excluding VAT (£990,000 including VAT). The award period runs from 1 October 2026 to 30 September 2028, with two optional 12-month extensions available to 30 September 2030. The tender estimated value was £433,333 excluding VAT (£990,000 including VAT).

This requirement indicates demand for suppliers combining environmental audit capability with practical mechanical services expertise. Credible competitors would need auditors able to carry out technical site visits, test the accuracy of operational and scheme data, interpret reports, and assess installations against legislation, Ofgem guidance and participant procedures. They would also need to recognise non-compliance, potential fraud and departures from good practice, including issues involving parties contracted by scheme participants. Experience of renewable heat installations, green gas projects, regulated incentive schemes or comparable compliance audits would be relevant to demonstrating technical competence. The single-bid outcome and the significant weighting given to technical quality show that delivery methodology, auditor capability and the quality of the proposed technical response are central to competing for this buyer’s future requirements.

How relevant is this notice?

Notice Information

Notice Title

NDRHI & GGSS Statistical and Targeted Audits

Notice Description

This procurement is for the provision of an audit contractor to perform technical site audits as part of the Non-Domestic Renewable Heat Incentives programme and the Green Gas Support Scheme on behalf of Ofgem. The overarching requirements of the audit site visit, regardless of Scheme, include the successful tenderer's auditors to:* Check the accuracy of data provided to Ofgem. This includes data provided in any reports;* Securing assurance of compliance with Ofgem's published guidance and with any procedures or Scheme that Ofgem may have agreed with the participant;* Detecting non-compliance and fraud, either on the part of the Auditee or those parties with whom they have a contract for delivering their obligations; and* Detecting departures from good practice that have resulted, or that may result in the incorrect supply of information to Ofgem. The successful tenderer will be expected to have a full understanding of the NDRHI and GGSS requirements and expect that they can apply their mechanical services expertise during site visits to understand when installations or participants are not complying with the relevant legislation.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-06ae94
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/086634-2026
Current Stage
Award
All Stages
Tender, Award

Procurement Classification

Notice Type
UK6 - Contract Award Notice
Procurement Type
Standard
Procurement Category
Services
Procurement Method
Open
Procurement Method Details
Open procedure
Tender Suitability
SME
Awardee Scale
Large

Common Procurement Vocabulary (CPV)

CPV Divisions

90 - Sewage, refuse, cleaning and environmental services

CPV Codes

90714200 - Corporate environmental auditing services

90714400 - Activity specific environmental auditing services

Notice Value(s)

Tender Value
£433,333 £100K-£500K
Lots Value
£433,333 £100K-£500K
Awards Value
£792,000 £500K-£1M
Contracts Value
Not specified

Notice Dates

Publication Date
11 Sep 20263 weeks ago
Submission Deadline
6 Jul 2026Expired
Future Notice Date
Not specified
Award Date
10 Sep 20263 weeks ago
Contract Period
1 Oct 2026 - 30 Sep 2028 2-3 years
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Complete
Awards Status
Pending
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
Ofgem
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
LONDON
Postcode
E14 4PU
Postcode Area
East London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI4 Inner London - East
Small Region (ITL 3)
TLI42 Tower Hamlets
Delivery Location
Not specified
Local Authority
Tower Hamlets
Electoral Ward
Canary Wharf
Westminster Constituency
Poplar and Limehouse

Supplier Information

Number of Suppliers
1
Supplier Name

WSP UK Limited

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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