ISO 14064-3: Verification & Validation

I. Definition

ISO 14064-3 is an international standard that defines how greenhouse gas information must be verified or validated by an independent third party.
It applies to GHG data, carbon footprints, and GHG projects.

In simple terms: ISO 14064-3 explains how to check that emissions data or climate results are accurate, complete, and credible before they are trusted.

II. Context

ISO 14064-3 is part of the ISO 14064 standard family.
While ISO 14064-1 focuses on organizational emissions and ISO 14064-2 on projects, ISO 14064-3 focuses on verification and validation.

Verification checks past data, such as a company’s reported emissions for a given year.
Validation checks future-oriented claims, such as expected emission reductions from a planned project.

The standard defines principles, levels of assurance, and verification processes.
It requires evidence, documented procedures, and clear conclusions from the verifier.

Because of this, ISO 14064-3 is widely used for regulatory reporting, carbon markets, and ESG disclosures where trust is critical.

III. Why it matters

At Orizscore, we believe verification and validation are the backbone of ESG credibility.
Without them, data remains a declaration, not a fact.

The key issue is confidence.
Can investors, regulators, or partners rely on the numbers?
Can claims survive independent review?

ISO 14064-3 turns transparency into a controlled process.
It forces organizations to prepare evidence, explain assumptions, and accept external scrutiny.

In a world where climate claims have real financial and reputational impact, trust is built through verification, not intention.

IV. Related terms

• ISO 14064-1: Greenhouse Gas Quantification
  https://www.orizscore.com/blogs/iso-14064-1-greenhouse-gas-quantification
• ISO 14064-2: GHG Projects Guidance
  https://www.orizscore.com/blogs/iso-14064-2-ghg-projects-guidance
• Verification of GHG Data
  https://www.orizscore.com/blogs/ghg-verification

V. Example

A company publishes its annual carbon footprint.
Before using the data for regulatory reporting, it requests a third-party verification under ISO 14064-3.

The verifier reviews calculations, data sources, and assumptions.
After checking evidence, the verifier issues a verification statement.

The result is clear: emissions data that can be trusted, audited, and used with confidence by all stakeholders.

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