Scope
Reference
prj_5040
Description
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.
Total value (estimated)
- £4,300,000 excluding VAT
- £5,160,000 including VAT
Above the relevant threshold
Contract dates (estimated)
- 1 March 2026 to 31 March 2030
- 4 years, 1 month
Main procurement category
Services
CPV classifications
- 73110000 - Research services
Contract locations
- UK - United Kingdom
Engagement
Engagement deadline
7 November 2025
Engagement process description
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.
Participation
Particular suitability
- Small and medium-sized enterprises (SME)
- Voluntary, community and social enterprises (VCSE)
Submission
Publication date of tender notice (estimated)
21 November 2025
Contracting authority
Department for Energy Security & Net Zero
- Public Procurement Organisation Number: PDHQ-2163-WYMH
55 Whitehall
London
SW1A 2HP
United Kingdom
Region: UKI32 - Westminster
Organisation type: Public authority - central government