ISO 14064-1 Greenhouse Gas (GHG) Inventory Verification

ISO 14064-1 sets out internationally recognized requirements for quantifying and reporting greenhouse gas (GHG) emissions and removals at the organizational level. This standard provides a robust framework for developing, managing, and verifying a carbon footprint, supporting organizations in their efforts toward carbon neutrality and net zero objectives. Kiwa delivers independent third-party verification to assess the accuracy and credibility of your GHG inventory, ensuring it meets ISO 14064-1 requirements. This service helps organizations demonstrate transparency, achieve sustainability targets, and fulfill customer, regulatory, and tender obligations.

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What is ISO 14064-1?

ISO 14064-1 establishes clear principles and requirements for organizations to quantify, monitor, and report greenhouse gas (GHG) emissions and removals. The standard guides organizations in defining system boundaries, identifying emission sources, and calculating Scope 1, 2, and 3 emissions. By following ISO 14064-1, organizations can systematically manage their carbon footprint and demonstrate environmental responsibility. 

Verification to ISO 14064-1 ensures that GHG data is complete, consistent, accurate, and transparent, supporting credibility with stakeholders and regulatory bodies. The process typically involves:

  • Defining boundaries and scope, including organizational, operational, and reporting limits.
  • Quantifying emissions and removals using recognized methodologies and conversion factors.
  • Reporting by documenting data, calculation methods, and underlying assumptions.
  • Independent third-party verification by Kiwa to confirm the reliability and integrity of reported information

 

Benefits of the Service

  • Credible carbon footprint – Assures the accuracy and reliability of reported GHG emissions.

 

  • Transparency and accountability – Demonstrates integrity in sustainability reporting.

 

  • Tender and investor confidence – Satisfies growing ESG and procurement requirements.

 

  • Enhanced risk management – Identifies operational inefficiencies and emission hotspots.

 

  • Supports compliance – Aligns with DEFRA, GHG Protocol, and international frameworks.

 

  • Foundation for carbon neutrality – Forms the basis for PAS 2060 and other net-zero initiatives.

 

Why Choose Kiwa?

Kiwa is recognized as a trusted global partner for carbon and sustainability verification services, offering extensive expertise across diverse industries and markets. Services are aligned with internationally recognized standards, ensuring that clients’ management systems and sustainability practices meet stringent quality, safety, and regulatory requirements. Kiwa’s approach allows for seamless integration with other management frameworks, such as ISO 14001 and ISO 50001, supporting unified and efficient system management. 

Clients benefit from access to a network of highly qualified, specialist auditors with sector-specific knowledge and a strong commitment to impartiality. The verification process is structured and transparent, delivering clear and credible results that enhance stakeholder confidence. By partnering with Kiwa, organizations receive support for continual improvement, risk mitigation, and the demonstration of responsible, sustainable business practices on a global scale.

 

The certification process with Kiwa

    Define Organizational and Operational Boundaries

    Begin by establishing which parts of the organization and which operations will be included in the greenhouse gas (GHG) inventory. This involves setting both organizational boundaries (such as subsidiaries or joint ventures) and operational boundaries (identifying direct and indirect emission sources).

    Identify GHG Emission Sources and Sinks

    List all relevant sources of emissions, such as fuel use, electricity consumption, and waste generation, as well as any sinks. Documenting these ensures comprehensive coverage within the defined boundaries.

    Collect and Collate Data

    Gather data from all identified sources and sinks. This includes information on energy use, waste, and other relevant activities. Use structured data collection methods to ensure accuracy and completeness.

    Quantify Emissions and Removals

    Apply recognized quantification methodologies, such as those from the IPCC or GHG Protocol, to calculate emissions and removals. Calculation tools and accepted conversion factors are used to measure and monitor GHG emissions.

    Develop a GHG Inventory Quality Management System

    Implement a quality management system for data collection, quantification, monitoring, and record-keeping. Establish policies and procedures to reduce uncertainty and ensure the reliability of the GHG inventory.

    Prepare Documentation and Internal Review

    Document all processes, methodologies, and results. Conduct internal audits and management reviews to confirm the inventory meets ISO 14064-1 requirements and is ready for external verification.

    Independent Verification

    Engage Kiwa as an independent third-party verifier. The verification process includes reviewing boundaries and data sources, assessing quantification methods, evaluating completeness and accuracy, and ensuring compliance with ISO 14064-1 and any additional frameworks.

    Issuance of Verification Statement

    Upon successful verification, a Verification Statement is issued. This confirms that the GHG inventory is accurate, thorough, and developed in accordance with ISO 14064-1, providing assurance to stakeholders and supporting compliance and transparency.

Who Is ISO 14064-1 For?

ISO 14064-1 verification is suitable for any organization seeking to measure and validate its environmental impact, including:

  • Corporations setting carbon reduction or net zero goals.

 

  • Public sector bodies required to disclose GHG performance.

 

  • Manufacturers, logistics providers, and energy users managing Scope 1–3 emissions. 

 

  • Companies preparing for PAS 2060 (Carbon Neutrality) or Science-Based Targets (SBTi).

Why Achieve Third-Party Verification?

Verification by an accredited, independent body such as Kiwa provides assurance that your carbon footprint and emissions data are trustworthy and defensible.

Verification also aligns with ISO 14064-3, the standard for greenhouse gas validation and verification processes, ensuring the highest levels of credibility.

It helps organizations to:

  • Strengthen stakeholder confidence and reputation.

 

  • Reduce risks of greenwashing or data inaccuracies.

 

  • Prepare for mandatory climate-related disclosures and net-zero reporting.

 

  • Support compliance with government tenders (e.g. PPN 06/21).

 

  • Drive more effective decision-making on emissions reduction and investments.

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