Emissions inventories

Providing the emissions evidence base to enable cost-effective mitigation of pollutants, supported by expert advice tailored to your needs.

We collect all the emissions evidence needed to assess and monitor air pollution and greenhouse gases at national and sub-national level. 

We are designing national emissions inventory models and systems tailored to the local data, to generate the best possible data outputs efficiently and consistently to high standards. Our team has unparalleled emissions inventory knowledge and skills which are widely regarded as examples of good practice internationally, and our experts have contributed significantly to the development of the European EMEP / EEA guidance.

Visit the flagship Inventory website that we deliver The UK National Atmospheric Emissions Inventory (NAEI) | National Atmospheric Emissions Inventory (energysecurity.gov.uk)

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Projects

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National Atmospheric Emissions inventory for the UK

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Building city emission inventories in emerging economies with limited data

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Scenario Modelling Tool

Designing a scenario-modelling tool to inform policy on air pollutant emissions

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Our services

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Projections, scenarios, and Net Zero pathways

Unlock a sustainable future with our advanced emissions projections, dynamic emissions scenario tools, and strategic net zero pathways.

Take advantage of Ricardo's 20+ year of experience on generating emissions projections for the UK government to meet its obligations under the UNECE and other national and international reporting commitments. Our team created a scientifically robust, intuitive and technologically secure tools for the policy makers to run scenarios on future emissions. The users can test the impact on local air quality and the Net Zero targets that are set when applying different measures and the changes in technology.  

Visit the flagship inventory website that we deliver
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Geospatial emissions data

Create high-resolution spatial emissions inventory and discover insights at a local scale with multi-layered GIS emissions apps. 

Ricardo’s geospatial capability combines a wealth of expertise in Atmospheric Science, Geographic Information Systems, Data Science and Earth Observation to tackle some of the most pressing environmental issues related to air quality and climate change. We a proven track record of delivering high-resolution emissions all the way from the collection of the raw data to data analysis & modelling, to reporting and ultimately to publish through bespoke GIS applications. 

50+ years of the NAEI – evolution shaped by policy
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Local and city emissions inventories

Develop detailed GHG datasets and tools to tackle the climate emergency 

Ricardo is instrumental in developing bespoke emissions inventories in response to local authorities’ and cities’ need to understand their full greenhouse emissions within their boundaries, allowing for improved insight into all sources contributing to climate change. These datasets will really help authorities understand the true challenge they face in addressing the climate emergency and where they can best focus their action.

Read a report we published on behalf of Defra

Our strengths

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Road Transport 

Road transport exhaust, break and tyre wear emissions contribute significantly to air pollution. Build your bespoke Road Transport Emissions model to estimate the emissions of the pollutants your area needs to tackle. Use your most recent traffic data or find out what is publicly available and design a fully automated system to understand pollution at national or local level. Take advantage of Ricardo’s expert knowledge on transport activity trends and changes in technologies, and run multiple scenarios to calculate future emissions.

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Oil and gas

Understand country’s or company’s emissions and compile detailed inventory that accurately analyses your sources and helps you plan mitigation measures.

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Waste

Build your waste model to estimate detailed GHG emissions that will help the policy makers to understand the full impact of activities in their area over time and subsequently develop action plans targeted to those emissions which are most significant or are within their sphere of influence. Our experts can help you map your area's waste streams and develop waste mass balance.

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Marine 

At a global scale, there is considerable policy interest in reducing emissions associated with both domestic and international shipping. Estimating shipping emissions data would both strengthen the understanding of emissions trends and enhance your ability to monitor progress in reducing emissions. Use localised vessel data - Automatic Identification System (AIS) – and build your bespoke Marine Emissions model to distinguish and report domestic and international shipping emissions, as well as forecast future emissions and scenarios.   

Emissions inventories Resources

Warsaw's groundbreaking Clean Transport Zone

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CS-N0W cooling emissions stocktake

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Key takeaways and actions from 2023’s Better Air Quality Conference

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Hazardous Materials Advisor - June 2025

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Meet the experts

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Rachel Yardley

Business Area Manager – Air Pollutant and Greenhouse Gas Emissions Inventories, Tools and Projections

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Yvonne Pang

Principal Consultant – Transport emissions

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Glen Thistlethwaite

Technical Director - Air Pollutant and Greenhouse Gas Emissions Inventories, Tools and Projections

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Ioannis Tsagatakis

Associate Director - Geographical Information Systems

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