ACA and Carbon Management
for Future-Ready Airports
Achieve ACI Airport Carbon Accreditation, from Level 1 to Level 5, with validated expertise.
The pressure to decarbonize
is no longer voluntary
Following the Paris Agreement and ICAO’s commitment to curb aviation emissions, airports must demonstrate concrete, visible action to improve energy efficiency and reduce greenhouse gases. Global standards are evolving fast, supply chain emissions (Scope 3) are increasingly under scrutiny, and ACI’s accreditation framework keeps raising the bar.
Complex Scope 3 Accounting
Moving Beyond Mapping
Operational Profitability
Navigating the full
ACA journey
ENV-ISA applies a common framework for active carbon management with measurable objectives, taking your airport from initial footprint mapping through to net-zero accreditation.
Boundary Definition & Footprint Mapping (Level 1 to Level 5)
Establish organizational boundaries based on operational control under the GHG Protocol. We map, gather, and calculate CO2 footprint data across all primary airport-controlled sources.
Carbon Management & Target Setting (Level 2 to Level 5)
Design carbon management plans and emissions reduction trajectories built to prove your airport is continuously and systematically reducing its footprint.
Stakeholder Engagement & Scope 3 (Level 3 to level 5)
Expand the carbon assessment to include third-party emissions. We design stakeholder engagement plans that bring airlines, tenants, and ground handlers into a coordinated reduction strategy.
Trajectories, Offsetting & Net Zero (Level 4, 4+ to Level 5)
Set long-term absolute emission reduction trajectories aligned with the Paris Agreement. We manage offsetting mechanisms, structural transformation, and the path to Level 5 Net Zero status.
Data-driven
Carbon Frameworks
Technical and strategic support that turns climate governance into a measurable advantage.
Management System
Frameworks
For the
decarbonization challenge
Two Decades of Aviation Exclusivity
Established in 2004, we don't adapt solutions from other sectors. We are entirely focused on aviation, with a deep understanding of airport operational constraints and airline realities.
Proven Global Track Record
More than 80 airports worldwide have trusted ENV-ISA to navigate and achieve Airport Carbon Accreditation across every tier.
Multidisciplinary Expertise
Our team combines environmental consultants, carbon accounting specialists, and aviation project managers, equally fluent in technical data and institutional decision-making.
Interdependency Intelligence
We never assess carbon in isolation. We understand the trade-offs between carbon management, local air quality, and airport noise constraints, and design strategies that account for all three.
Where we've delivered
Japanese Airport Network
Beginning with Narita International Airport in 2018, ENV-ISA’s presence in Japan expanded through referrals, leading to long-term partnerships with Kansai Airports (Kansai International, Osaka Itami, and Kobe), Chubu Centrair, and Haneda. All four airport groups have since achieved ACA Level 4.
- Multi-airport ACA Level 4 accreditation support
- Annual renewal management
Lyon Saint-Exupéry — Aéroports de Lyon
ENV-ISA supported Lyon Saint-Exupéry from ACA Level 4+ through to Level 5 accreditation, making it one of only three French airports to reach this tier. The airport has achieved a 90% reduction in Scope 1 & 2 emissions and is advancing toward Net Zero Scope 3 by 2050.
- ACA Level 4+ renewal and Level 5 accreditation support
- Scope 3 roadmap aligned with Paris agreement
The Local Environment
Impact Tool: Data-Driven Compliance
Developed for airport environmental teams under the EU-funded Horizon 2020 initiative, ENV-ISA’s Local Environmental Impact Tool tracks, visualizes, and reports on aircraft emissions and carbon metrics in real time.
EU Circular Economy Action Plan
Strategic alignment with the EU's product lifecycle requirements, extended producer responsibility, and waste reduction targets affecting aviation operations.
CSRD & EU Taxonomy Compliance
Circular economy metrics and disclosures under the Corporate Sustainability Reporting Directive and EU Taxonomy for sustainable economic activities.
EU Waste Framework Directive
Implementation of the waste hierarchy, waste prevention programmes, and extended producer responsibility schemes specific to the aviation context.
ICAO & IATA Environmental Standards
Alignment with international aviation environmental guidelines, including IATA's Environmental Assessment programme and ICAO's environmental protection standards.
Ready to accelerate your airport’s
journey to Net Zero?
Schedule a 30-minute discovery call with our ACA experts. We’ll assess your current carbon footprinting and define your fastest pathway from Level 1 to Level 5 accreditation.