--- title: "NDRHI & GGSS Statistical and Targeted Audits" ocid: "ocds-h6vhtk-06ae94" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06ae94" markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-06ae94.md" json_url: "https://d3tenders.com/contract/ocds-h6vhtk-06ae94.json" source: "Find A Tender Service" current_stage: "Tender" buyer: "OFGEM" published: "2026-06-26" --- # NDRHI & GGSS Statistical and Targeted Audits Buyer: OFGEM Current stage: Tender OCID: ocds-h6vhtk-06ae94 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06ae94) [Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-06ae94.json) ## Summary Ofgem, the sub-central government public authority in the UK, is seeking an audit contractor for technical site audits under the Non-Domestic Renewable Heat Incentives (NDRHI) programme and the Green Gas Support Scheme (GGSS). Located in London, the procurement process is in the tender update stage, with an end date for tenders on 6th July 2026. The scope includes corporate and activity-specific environmental auditing services across the UK, with a gross value of GBP 990,000. Potential suppliers should have mechanical services expertise and a strong understanding of NDRHI and GGSS requirements. This open procedure demands submissions via the MyTenders portal, and all enquiries must be concluded by 30th June 2026. This tender presents substantial growth opportunities, especially for SMEs skilled in environmental audits and compliance verification. Businesses with expertise in technical audits and proficiency in detecting compliance issues and fraud will find this contract beneficial. The tender covers a three-year contract expected to start on 1st October 2026, with possible extensions of up to two additional years. This procurement encourages competition based on both quality and cost, with technical criteria weighing significantly. Companies can leverage this opportunity to cement a long-term relationship with Ofgem and expand their market presence within the public sector audit services. ## Notice 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. ## Key Details | Field | Value | | --- | --- | | Publication source | Find A Tender Service | | Latest notice | https://www.find-tender.service.gov.uk/Notice/060395-2026 | | Notice type | UK4 - Tender Notice | | Procurement type | Standard | | Procurement category | Services | | Procurement method | Open | | Procurement method details | Open procedure | | Tender suitability | SME | | Awardee scale | Not specified | | All stages | Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 26 Jun 2026 | | Submission deadline | 6 Jul 2026 | | Future notice date | Not specified | | Award date | Not specified | | Contract period | 30 Sep 2026 - 1 Oct 2029 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £433,333 | | Lots value | £433,333 | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Active | | Lots status | Active | | Awards status | Not specified | | 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 | ## CPV Codes ### Divisions - 90 - Sewage, refuse, cleaning and environmental services ### Codes - 90714200 - Corporate environmental auditing services - 90714400 - Activity specific environmental auditing services ## Release History - 26 Jun 2026 at 13:19 - TenderUpdate - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/060395-2026 - 5 Jun 2026 at 11:04 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/053278-2026 ## Documents - https://www.find-tender.service.gov.uk/Notice/060395-2026 26th June 2026 - Tender notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/053278-2026 5th June 2026 - Tender notice on Find a Tender - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=643773 2026-037 Annex E Additional Evaluation Criteria - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=643774 2026-037 Annex F Tender Declaration - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=643775 2026-037 Annex G Non Collusion Certificate - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=643776 2026-037 Annex H Conflict of Interest Certificate - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=643777 2026-037 NDRHI Audit example Template (For info only) - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=643809 2026-037 Annex C Technical Section - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=643810 2026-037 Annex I Terms and Conditions - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=643811 2026-037 NDRHI Site Audits ITT - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=643812 2026-037 Annex B Procurement Specific Questionaire - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=643813 2026-037 Annex D Commercial Section - https://www.mytenders.co.uk/Authority/NoticeBuilder/NoticeBuilder_FileDownload.aspx?id=643814 2026-037 Annex J Contract Conditions Form ## Notice URLs - http://www.ofgem.gov.uk - https://www.legislation.gov.uk/ukpga/2023/54/contents ## 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-h6vhtk-06ae94. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-06ae94.json.