--- title: "Greenhouse Gas Inventory Improvement Programme - 2" ocid: "ocds-h6vhtk-05190c" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05190c" markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05190c.md" json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05190c.json" source: "Find A Tender Service" current_stage: "Planning" buyer: "DEPARTMENT FOR ENERGY SECURITY & NET ZERO" published: "2026-04-29" --- # Greenhouse Gas Inventory Improvement Programme - 2 Buyer: DEPARTMENT FOR ENERGY SECURITY & NET ZERO Current stage: Planning OCID: ocds-h6vhtk-05190c [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05190c) [Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-05190c.json) ## Summary The Department for Energy Security & Net Zero is spearheading the Greenhouse Gas Inventory Improvement Programme - 2, aiming to advance research services that enhance UK's GHG inventory in alignment with IPCC guidelines. Centrally located in London, the department is currently at the planning stage, with an engagement milestone scheduled through a Supplier Engagement Call on Friday 24th October 2025 from 10 AM to 12 PM GMT. Interested parties need to register by 4 PM GMT on 23rd October 2025, with the market engagement event set to take place the same week. The programme wishes to employ multidisciplinary research methods to ensure a robust, transparent, and enhanced GHG inventory, with anticipated contract duration from 1st August 2026 to 31st March 2030. This tender provides significant opportunities for businesses with expertise in climate science, emissions modelling, and international emissions reporting standards. The programme is conducive to small and medium-sized enterprises (SMEs), as well as voluntary, community, and social enterprise (VCSE) organisations due to the collaborative and multidisciplinary nature of the research efforts required. Engaging with this procurement process allows businesses to contribute to vital national and international climate initiatives, while also benefiting from £4.3 million GBP in net value, expanding their operational scope and influence in the environmental sector. ## Notice The market engagement slides have been shared with those who registered interest on the participation form. If you would like a copy, please email internationalclimateandenergy.procurement@energysecurity.gov.uk to request them. We are finalising the responses to the Q&A which will be published shortly. The slides and Q&A document will also be published alongside the ITT and UK4 notice. DESNZ is seeking to procure a supplier(s) to deliver and lead the second UK Greenhouse Gas (GHG) Inventory Improvement Programme of research (IIP-2). The research programme will involve an organisation with expert technical understanding of inventory issues as they relate to issues across the UK economy leading a consortium to develop methodologies, deliver sector-specific original research and engage relevant stakeholder, generating new or updated emission factors and activity data. This will continue to ensure that the UK GHG inventory is in alignment with Intergovernmental Panel on Climate Change guidelines and reflects government decarbonisation efforts. The programme will require a multidisciplinary team with expertise spanning but not limited to climate science, mathematical emissions modelling, IPCC guidelines, UNFCCC accredited experts and international emissions reporting standards, specifically as applied to sectoral processes (excluding the agriculture sector but a knowledge of the agriculture sector is essential). In addition, a dedicated programme management office will be essential to coordinate and oversee delivery. To ensure comprehensive and high-quality outcomes, the programme will employ a blend of qualitative, quantitative, modelling, and collaborative research approaches. These will include desk-based analysis, stakeholder engagement, laboratory testing, model and methodology development, fieldwork, and rigorous QA/QC procedures. The intended outcome is a scientifically robust and transparently enhanced UK GHG inventory. The inventory will be more resilient to future changes and capable of quantifying emissions uncertainty in a reproducible and interpretable manner. It will also improve the representation of emissions from diffuse sources, using open and transparent models and methods that allow for the identification and correction of risks and weaknesses. DESNZ is holding a supplier event on MS Teams on Friday 24th October 2025 from 10 AM -12 NOON GMT, consisting of presentations by DESNZ and interactive feedback sessions. ### Planning Information There will be a Supplier Engagement Call on Friday 24th October 2025 from 10 AM – 12 PM GMT. If you are interested in this potential opportunity, please complete the MS Form with your company details: https://forms.office.com/e/GLcdYeYiVD Following confirmation of company details and contact information, an ‘MS Teams’ invite will be circulated for the market engagement event on the week of the event. We would ask that you have a maximum of 2 attendees from each organisation. Participants will need to register for the call by 4 PM GMT on Thursday 23rd October 2025. Please send any clarification questions or queries to internationalclimateandenergy.procurement@energysecurity.gov.uk by 4 PM GMT on Friday 7th November 2025. ## Key Details | Field | Value | | --- | --- | | Publication source | Find A Tender Service | | Latest notice | https://www.find-tender.service.gov.uk/Notice/039077-2026 | | Notice type | UK2 - Preliminary Market Engagement Notice | | Procurement type | Standard | | Procurement category | Services | | Procurement method | Not Specified | | Procurement method details | Not specified | | Tender suitability | SME, VCSE | | Awardee scale | Not specified | | All stages | Planning | ## Dates | Field | Value | | --- | --- | | Publication date | 29 Apr 2026 | | Submission deadline | Not specified | | Future notice date | 13 May 2026 | | Award date | Not specified | | Contract period | 31 Jul 2026 - 31 Mar 2030 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £4,300,000 | | Lots value | Not specified | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Planned | | Lots status | Planned | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | DEPARTMENT FOR ENERGY SECURITY & NET ZERO | | Locality | LONDON | | Post town | South West London | | Postcode | SW1A 2HP | | 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 | ## CPV Codes ### Divisions - 73 - Research and development services and related consultancy services ### Codes - 73110000 - Research services ## Release History - 29 Apr 2026 at 10:37 - PlanningUpdate - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/039077-2026 - 3 Dec 2025 at 16:45 - PlanningUpdate - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/079489-2025 - 8 Oct 2025 at 09:40 - PlanningUpdate - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/063169-2025 - 1 Oct 2025 at 15:02 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/061444-2025 - 20 May 2025 at 13:53 - Planning - UK1 - Pipeline Notice - https://www.find-tender.service.gov.uk/Notice/023336-2025 ## Documents - https://www.find-tender.service.gov.uk/Notice/039077-2026 29th April 2026 - Preliminary market engagement notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/079489-2025 3rd December 2025 - Preliminary market engagement notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/063169-2025 8th October 2025 - Preliminary market engagement notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/061444-2025 1st October 2025 - Preliminary market engagement notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/023336-2025 20th May 2025 - Pipeline notice on Find a Tender ## Notice URLs - https://forms.office.com/e/GLcdYeYiVD - 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-05190c. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05190c.json.