Eneval

Evaluates and models carbon emissions using the results of strategic and microsimulation models.

ENEVAL produces comprehensive and reliable carbon assessments using the European COPERT dataset and parameters from NAEI and TAG for air quality. It delivers an integrated, model‑driven assessment.

While initially developed using UK and EU databases, ENEVAL can be adapted to incorporate emissions datasets from any region in the world. Our solution fully exploits the potential of strategic and microsimulation models to offer you a detailed and personalised view of your emissions.

Key contacts

Matt POLLARD

Associate

> LinkedIn

Chris ROBINSON

Associate Director > LinkedIn

Carbon Modelling

Net Zero Transport & Decarbonisation

Climate Change Resilience & Adaptation

Sustainable Development

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Learn about the ENEVAL team

ENEVAL delivers crucial insights not covered by other carbon modelling software.

ENEVAL evaluates and models emissions using outputs from strategic and microsimulation models, drawing on COPERT emissions data and the latest TAG and NAEI parameters. It assesses greenhouse gases such as CO2 and CH4 alongside key air pollutants including NOx and PM2.5.

The tool identifies the vehicle types that emit the most, determines the origins and destinations responsible for the largest shares of emissions across areas and local authorities, helping to measure the contribution of policies and initiatives in reducing transport emissions – supporting progress toward net‑zero and clean air targets.

ENEVAL has been, and continues to be used on a wide range of SYSTRA UK projects e.g.

Clean Air Zones (including monitoring).
Carbon Action plans.
Carbon Skimming.

Assess network impact and pollution

Powerful in-house environmental emissions modelling tool.
Assesses emissions from transport using the latest COPERT data and current TAG and NAEI parameters.
Undertakes assessments based on strategic and microsimulation models.
Unlike spreadsheet-based workflows (e.g., the EFT interface), ENEVAL’s system is enabled to handle assessments across much larger large networks.

Identify sources of pollution

For Climate Action Plans, ENEVAL quantifies emissions using trusted datasets (EFT, COPERT, NAEI/TAG) and traffic model outputs, attributing results to vehicle types and operating conditions to target the most impactful interventions.

Consider gradient and goods vehicle load factor calculations.
Identifies emission types: CO2, CO, NOX, PM2.5 and CH4.
Can include Well‑to‑Tank emissions for fossil‑fuel vehicles and emissions from electricity generation for electric vehicles,.

Determine the origin of emissions

Pinpoints origins of carbon emissions by geographical area.
Identifies key trips responsible for transport emissions.

Measure the contribution of emission reduction policies and strategies

Create scenarios to stimulate pollution strategies.
Measure contribution of policies and their impact on transport.

How do I measure transport carbon emissions for local climate action plans?

Every project has unique requirements, and ENEVAL is designed to be as flexible as possible. Our specialists use the tool to move beyond general averages, providing a granular view of how different policies affect local air quality. This helps us work closely with you to pinpoint exactly where interventions will have the greatest impact on your carbon reduction targets.

Is ENEVAL compatible with international emissions datasets outside the UK?

Yes. While we initially developed ENEVAL using UK and EU databases, such as the National Atmospheric Emissions Inventory (NAEI) and Transport Analysis Guidance (TAG), the software is flexible. SYSTRA can adapt the tool to incorporate emissions datasets from any region in the world, ensuring your carbon assessments are reliable and relevant to your local regulatory environment.

Which data sources does ENEVAL use for emissions modelling?

ENEVAL draws its data from the most trusted national and international sources to ensure your assessments are accurate and defensible. In the UK, we use NAEI and TAG parameters. This is complemented by COPERT (Computer Programme to calculate Emissions from Road Transport) data, which is the European standard for calculating vehicle emissions.

How does ENEVAL use different datasets for air quality assessments?

ENEVAL uses the latest COPERT emission factors, alongside TAG and NAEI parameters, and combines them with outputs from strategic and microsimulation traffic models. This approach provides granular, network‑specific results for pollutants and greenhouse gases, including CO2, CO, NOx, PM2.5 and CH4.

How does ENEVAL support PAS 2080 carbon management standards?

ENEVAL provides a transparent and evidence-based foundation for decision-making. SYSTRA is a PAS 2080 certified organisation, meeting the global standard for carbon management in infrastructure. This means our processes—including the way we use ENEVAL—meet rigorous requirements for carbon measurement and reporting across the entire project lifecycle.

How does ENEVAL relate to the UK’s Emissions Factors Toolkit (EFT) ?

ENEVAL uses authoritative emission parameters (COPERT with NAEI/TAG) but is not the same as the EFT calculator. It applies these factors to detailed traffic modelling to attribute emissions by vehicle type and trip, map hot‑spots across areas and authorities, and test policies, providing a defensible, network‑specific assessment that the EFT alone cannot offer.