A Clearer Path for Emissions Monitoring and Reporting
The new 2025 edition of the ICAO CORSIA CO2 Estimation and Reporting Tool brings a more organised structure for operators preparing their emissions monitoring and reporting requirements. This update supports clarity across planning cycles and helps teams approach compliance with greater confidence.
What Stands Out in the 2025 CERT
Updated Estimation Models
A key feature in this release is the refreshed set of CO2 Estimation Models. These equations form the analytical base of the tool and provide a consistent way to estimate emissions using flight distance or block time. Their careful development ensures that reporting remains both reliable and aligned with operational reality.
Enhanced Digital Inputs
The CERT update is supported by CSV file templates that guide users through structured data entry. These templates simplify the early steps of preparing monitoring plans and reports, making it easier to organise information without unnecessary complexity.
Streamlined Reporting Support
The tool continues to assist operators in developing monitoring plans and emissions reports. It allows users to check whether they fall within the monitoring scope and whether they may apply fuel use monitoring methods in future years. When information gaps appear, the system can bridge them through built-in logic.
Practical Implications for Operators
This version helps operators determine if they must submit a monitoring plan and whether they can use CERT methods in 2026. It also supports emissions reporting for those already within the framework. By combining structured templates with updated estimation logic, the tool enables more consistent internal workflows and encourages early preparation.
For organisations working to strengthen sustainability strategies in transport, such updates often guide how advisory teams refine methodologies and support industry readiness in a practical way.
Conclusion
The 2025 CERT update offers clearer guidance, improved estimation models and well-structured input tools to support emissions monitoring under CORSIA. It represents another step toward harmonised reporting practices across international aviation and gives sustainability professionals a more predictable foundation for future planning.
Download Document File Here: Version 2025 of the ICAO CORSIA CERT
Download Template File Here: Summary of assessment of applicability of CORSIA and eligibility to use the ICAO CORSIA CERT in 2026 (functionality)
Download Template File Here: CO2 Estimation and Reporting for 2025 (functionality)
Download Document File Here: 2025 Version of the ICAO CEMs
Download Document File Here: Technical Document