ESG & Carbon Accounting Methodology

1. Methodology Overview

Aevum Zenth’s carbon accounting and ESG measurement system is designed to provide transparent, auditable, and actionable data across our 400+ subsidiaries and operating divisions. Our approach aligns with globally recognized standards and reflects the complexity of a multidivisional conglomerate spanning energy, technology, aerospace, healthcare, finance, and heavy industry.

Core Principle: All environmental data is treated as a critical business asset. Measurement precedes management, and verification precedes disclosure.

The methodology integrates primary operational data with secondary emission factors, applying location-based and market-based accounting where applicable. All calculations are centralized through our enterprise sustainability data platform, enabling real-time aggregation, scenario modeling, and regulatory compliance mapping.

GHG Protocol Corporate Standard ISSB S1 / S2 TCFD / TNFD CSRD / ESRS GRI Standards SBTi Criteria v2.0

2. Governance & Oversight

Environmental accountability is embedded at every tier of Aevum Zenth’s corporate structure. Our governance model ensures data integrity, strategic alignment, and regulatory compliance.

Governing Body	Responsibilities	Reporting Frequency
Board Sustainability Committee	Strategic oversight of net-zero roadmap, climate risk integration, capital allocation for decarbonization	Quarterly
Chief Sustainability Officer (CSO)	Execution of ESG strategy, cross-divisional methodology enforcement, stakeholder engagement	Monthly
Divisional ESG Leads	Data collection, local factor application, scope 3 boundary definition, reduction project tracking	Monthly / Real-time
Internal Audit & Risk	Control testing, data lineage validation, assurance readiness, compliance verification	Bi-annually

3. Greenhouse Gas Accounting Scopes

Emissions are categorized and measured according to the GHG Protocol Corporate Standard. Aevum Zenth applies full value-chain transparency with specific emphasis on high-impact Scope 3 categories.

Scope 1

Direct Emissions

Fuel combustion in owned facilities, company vehicles, fugitive refrigerant leaks, process emissions (cement/chemical divisions), and waste incineration.

Scope 2

Indirect Energy

Purchased electricity, steam, heating, and cooling. Reported using both location-based (grid averages) and market-based (PPAs, RECs, contractual) approaches.

Scope 3

Value Chain

Upstream: purchased goods/services, capital goods, business travel, waste generated. Downstream: product use, end-of-life treatment, sold products.

Allocation Note: Shared facilities and joint ventures are allocated using the equity-share method or physical/operational control criteria, consistently applied across all divisions.

4. Calculation & Data Management

Our carbon accounting engine operates on a standardized Emissions Calculation Factor (ECF) model: Activity Data × Emission Factor = Gross Emissions. Offsets, removals, and avoidance claims are tracked separately and never double-counted.

4.1 Data Hierarchy

Primary Meter Data: IoT sensors, utility bills, fuel delivery logs, ERP inventory draws.
Division-Specific Factors: Supplier-provided LCA data, contract specifications, internal testing.
Verified Databases: Ecoinvent, DEFRA, IPCC, EPA, IEA, regional grid factors.
Industry Benchmarks: Applied only when primary data is unavailable, with mandatory documentation and expiry tracking.

4.2 Software & Integration

All divisions feed into the centralized Aevum Sustainability Platform, which integrates with SAP, Oracle, and divisional OT systems. The platform automates factor updates, flags anomalies, calculates uncertainty bounds, and generates audit trails compliant with ISO 14064-1.

5. Quality Assurance & Verification

Data integrity is maintained through a tiered assurance program aligned with ISAE 3000 and AA1000AS standards.

Internal Controls: Automated validation rules, quarterly cross-checks by divisional controllers, and data lineage mapping for all material categories.
Limited Assurance: Annual third-party verification of Scope 1 and 2 data, plus high-materiality Scope 3 categories (Purchased Goods & Services, Capital Goods, Business Travel).
Reasonable Assurance Roadmap: Transition to full reasonable assurance for all Scope 1/2 and consolidated Scope 3 by FY2028, following SBTi requirements.
Continuous Improvement: Annual methodology reviews, factor refresh cycles, and staff competency certification in carbon accounting standards.

6. Decarbonization Targets & Strategy

Aevum Zenth’s climate targets are validated by the Science Based Targets initiative (SBTi) and aligned with the IPCC 1.5°C pathway. Our reduction strategy prioritizes absolute emissions cuts over offsets, with removals reserved only for residual, unavoidable emissions.

2025–2030

Reduce absolute Scope 1 & 2 emissions by 50% (2021 baseline). Eliminate unabated coal. Achieve 100% renewable electricity via PPAs and on-site generation in regulated markets.

2030–2040

Reduce Scope 3 Category 1–4 emissions by 40%. Mandate supplier climate alignment. Deploy circular design standards across manufacturing divisions.

2045

Achieve Net-Zero across all scopes. Remaining residual emissions balanced by high-integrity, verified carbon removals (DAC, biochar, enhanced weathering).

7. Disclosure & Transparency

Aevum Zenth commits to annual integrated reporting that links financial performance with environmental and social outcomes. All disclosures are prepared under the following frameworks:

ISSB S1 & S2: Climate-related financial disclosures, scenario analysis (1.5°C, 2°C, 3°C pathways), transition plan alignment.
EU CSRD / ESRS: Full double-materiality assessment, value chain impacts, biodiversity & circular economy metrics.
GRI & SASB: Industry-specific KPIs mapped to sector standards (Energy, Tech, Healthcare, Financials, etc.).
CDP: Annual scoring target of A- or above for Climate, Supply Chain, and Forests.

Our annual ESG & Integrated Impact Report is published each April, with raw datasets, methodology appendices, and third-party assurance statements made publicly accessible via our sustainability data portal.