IFRS S2 for Airport Sector in Mexico: 2026 Guide
IFRS S2 is the climate-specific standard adopted by CNBV as mandatory for all BMV and BIVA issuers starting January 2025, making Mexico the first country in North America to implement IASB's ISSB standards. Companies must report GHG emissions across all three scopes, conduct climate scenario analysis, and disclose how climate change impacts their strategy and financial model. Limited assurance of the report by an external auditor will be required starting with the 2027 reporting cycle.
GAP, ASUR, and OMA report to BMV and NYSE/NYSE-listed ADRs, exposing them to dual regulatory scrutiny: CNBV/IFRS S2 and SEC/climate disclosure rules. Their Scope 3 Cat 13 emissions (aircraft LTO cycles) represent 15-25x their direct operational emissions, and disclosing them under IFRS S2 without a standardized ICAO methodology for the Mexican context is the main technical challenge.
Why IFRS S2 Applies Differently in Airport Sector
CFO and Sustainability Director of airport groups listed on BMV/NYSE
Aircraft emissions in LTO cycles (landing-takeoff) — Scope 3 Cat 13 where the airport operator does not control emissions but IFRS S2 requires disclosing them under the asset's influence perimeter
Ground Support Equipment (GSE) operated by airlines: the airport does not control Scope 1 sources of third parties operating in its facilities
Management of multiple airports with different Airport Carbon Accreditation (ACA) certification levels — different methodologies and perimeters per airport
Water consumption at terminals and runways with mixed sources (wells + municipal network) without sub-metering per terminal/operational area
Critical IFRS S2 KPIs for Airport Sector
| Required KPI | Data Source | Difficulty |
|---|---|---|
| tCO2e per passenger processed (WCI — Airport Carbon Intensity) | Direct combustion (Scope 1) | High 🔴 |
| Energy consumption per WLU (Workload Unit — passenger + tonne of cargo) | Electricity bills (Scope 2) | High 🔴 |
| Airport Carbon Accreditation certification level (1-4) | Cat 13 - Emisiones de aeronaves en LTO | High 🔴 |
| Water intensity per passenger (liters/passenger) | HR / payroll system | Medium 🟡 |
| Waste generation per passenger and diversion rate (%) | ERP / accounting system | Medium 🟡 |
Hard-to-Collect Data in Airport Sector
Aircraft fuel consumption in LTO by airline and aircraft type (Scope 3 Cat 13 data that SENEAM has partially)
GSE emissions (tow tractors, stairs, supply trucks) operated by third-party ground handlers
Water consumption by operational zone in airports with internal network without smart meters
That is why manual Excel-based processes will not pass the 2027 assurance. Without automated traceability, an external auditor cannot verify the completeness or accuracy of emissions data.
Checklist: 8 Steps to Comply with IFRS S2 in Airport Sector
- 1
Reporting of GHG emissions Scope 1, 2, and 3 (full value chain) in metric tons of CO₂ equivalent
- 2
Climate scenario analysis aligned to TCFD using at least 1.5°C and 2°C as reference pathways
- 3
Identification and quantification of physical risks (chronic and acute) and transition risks
- 4
Disclosure of emissions reduction targets, including net-zero goals with interim milestones
- 5
Description of how climate risks and opportunities affect business model, strategy, and cash flows
- 6
Connect data sources (ERP, meters, suppliers) to a centralized platform
- 7
Review with internal audit team and adjust consolidation perimeter
- 8
Generate report in CNBV/CINIF format ready for external assurance
How Climatta Automates IFRS S2 for Airport Sector
Automated Collection
Eliminate spreadsheets in Airport Sector. Climatta connects your systems and automatically collects tCO2e per passenger processed and other critical KPIs.
Auditor-Grade Traceability
Every data point has source, date, and owner documented. The 2027 assurance auditor can trace every figure to its origin in your systems.
IFRS S2 Report Ready
Generates the report in the exact CNBV format — tables, metrics, and narrative. No last-minute manual reformatting.
Onboarding in 4 Weeks
Climatta connects to Airport Sector systems in 4 weeks. No months-long IT project or external implementation consultant.
FAQ: IFRS S2 in Airport Sector
Ready to comply with IFRS S2 in Airport Sector?
Climatta centralizes all data collection, generates the report in regulatory format, and leaves it ready for 2027 external assurance. No spreadsheets.