Airport Carbon Accreditation
Airport Carbon Accreditation
Airport Carbon Accreditation (ACA) is the globally recognised carbon management and certification programme for airports.
It supports airports in reducing CO₂ emissions and advancing climate action through a structured accreditation framework.
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What is ACA?
ACA provides a structured framework that enables airports to measure, manage, reduce and ultimately neutralise their carbon emissions, while progressively engaging airlines, ground handlers and other partners operating on the airport platform.
Carbon Management
Supports airports in measuring, managing and reducing carbon emissions in a structured way.
Emission Reduction
Guides airports through progressive climate action and operational carbon reduction.
Accreditation
Recognises airport progress through seven progressive accreditation levels.
Why ACA Matters
Climate action is now a central responsibility for airports. ACA helps airports demonstrate credible, measurable and independently recognised progress in reducing their carbon footprint.
- Measure airport carbon emissions
- Manage and reduce CO₂ emissions progressively
- Engage airport stakeholders in climate action
- Strengthen environmental credibility and accountability
- Support long-term decarbonisation and sustainability goals
What ACA Supports
ACA enables airports to follow a progressive pathway from carbon mapping to advanced carbon management and Net Zero validation.
Carbon Measurement
Establish a clear understanding of airport-related carbon emissions.
Carbon Management
Build structured processes to manage emissions and environmental performance.
Reduction Planning
Support progressive reduction of CO₂ emissions through targeted actions.
Stakeholder Engagement
Encourage airlines, handlers and airport partners to contribute to climate action.
Neutralisation Pathway
Support airports moving toward neutralisation of residual emissions.
Net Zero Validation
Level 5 validates Net Zero carbon emissions for Scopes 1 and 2 and active management of Scope 3 emissions.
Seven Progressive Accreditation Levels
ACA recognises airport achievements through seven progressive accreditation levels, culminating in Level 5.
- Progressive recognition of carbon management maturity
- Structured pathway from measurement to reduction
- Stakeholder engagement across the airport platform
- Advanced carbon management and neutralisation
- Level 5 validation of Net Zero carbon emissions for Scopes 1 and 2
Value for Airports
- Demonstrate climate action through a recognised global programme
- Strengthen carbon management capability
- Support airport sustainability and ESG strategies
- Engage operational partners in emissions management
- Build credibility with regulators, passengers, communities and stakeholders
