Tender: UK Greenhouse Gas Inventory Improvement Programme (IIP-2) — Energy, Waste and IPPU Emissions Research

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DESNZ is seeking a supplier to deliver and lead the second UK Greenhouse Gas (GHG) Inventory Improvement Programme (IIP-2), focused on Energy, Waste and Industrial Processes and Product Use (IPPU) emissions reporting. The lead organisation will head a consortium to develop methodologies, deliver sector-specific original research, engage stakeholders, and generate new or updated emission factors and activity data to ensure the UK GHG inventory aligns with IPCC guidelines and reflects government decarbonisation efforts. The procurement requires multidisciplinary teams with expertise in climate science, mathematical emissions modelling, IPCC guidance, UNFCCC-accredited experts and international emissions reporting standards, plus a dedicated programme management office. Work will combine qualitative and quantitative approaches including desk analysis, stakeholder engagement, laboratory testing, model and methodology development, fieldwork and rigorous QA/QC to produce transparent, reproducible models that improve representation of diffuse sources and quantify emissions uncertainty. This procurement is one of two programmes; this lot covers Energy, Waste and IPPU sectors.