IFRS S2 for Petrochemicals 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.
Petrochemicals face the highest transition risk of all sectors under IFRS S1: IEA and IPCC scenarios project a 20-40% reduction in virgin plastic demand by 2040. PVC and polyethylene plants must undergo stranded asset analysis and the CFO must decide whether impairment is material under IAS 36 in conjunction with IFRS S1.
Why IFRS S2 Applies Differently in Petrochemicals
HSE Director and CFO of petrochemical groups listed on BMV with continuous process plants required to report IFRS S1/S2 to CNBV from 2026
Continuous process emissions (cracker, reactor) are the primary Scope 1 source but CEMS (Continuous Emission Monitoring Systems) meters rarely export data in GHG Protocol-compatible format
Volatile organic compounds (VOCs) and methane in vents and purges: GHG Protocol Industrial Processes requires direct measurement or process-specific emission factors — data SEMARNAT has not standardized
IFRS S1 requires transition risk analysis: virgin plastic demand under IEA NZE 2050 scenario falls 30%, impacting PVC and polyethylene plant valuation that the CFO must quantify
Scope 3 category 11 (use of product): plastics sold to packaging industry have end-of-life footprint that the petrochemical company must estimate under GHG Protocol Product Standard methodology
Critical IFRS S2 KPIs for Petrochemicals
| Required KPI | Data Source | Difficulty |
|---|---|---|
| Carbon intensity: tCO₂e per tonne of resin or chemical product produced | Direct combustion (Scope 1) | High 🔴 |
| Rate of fugitive emissions detected and repaired under LDAR program (% valves with leaks vs. total inspected) | Electricity bills (Scope 2) | High 🔴 |
| Energy consumption: GJ per tonne of product, broken down by source (natural gas, steam, electricity) | Cat 1 - Materias primas petroquímicas (nafta, etano, propano) | High 🔴 |
| Hazardous process waste generation (spent catalysts, solvents) in t/year with final destination | HR / payroll system | Medium 🟡 |
| Water intensity: m³ of process water (non-cooling) per tonne produced | ERP / accounting system | Medium 🟡 |
Hard-to-Collect Data in Petrochemicals
Fugitive emissions from valves, flanges and compressors in continuous process plants under LDAR (Leak Detection and Repair) — require periodic inspection with OGI infrared camera
Process-specific emission factor by resin type produced (HDPE, PVC, PET) differentiating process vs. combustion sources
Industrial steam purchased from CFE or cogenerator: correct classification as Scope 2 (heat/cold) per GHG Protocol Scope 2 Guidance 2015
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 Petrochemicals
- 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 Petrochemicals
Automated Collection
Eliminate spreadsheets in Petrochemicals. Climatta connects your systems and automatically collects Carbon intensity: tCO₂e per tonne of resin or chemical product produced 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 Petrochemicals systems in 4 weeks. No months-long IT project or external implementation consultant.
FAQ: IFRS S2 in Petrochemicals
Ready to comply with IFRS S2 in Petrochemicals?
Climatta centralizes all data collection, generates the report in regulatory format, and leaves it ready for 2027 external assurance. No spreadsheets.