ISO 14064-3:2019
Specification with guidance for the verification and validation of greenhouse gas statements — providing independent assurance of GHG assertions.
What is ISO 14064-3?
ISO 14064-3 specifies principles and requirements for conducting verification and validation of GHG assertions. Verification relates to historical data (e.g. a completed GHG inventory), while validation relates to future projections (e.g. a planned GHG project).
The standard covers the entire verification/validation engagement from planning through to the issuance of the verification or validation statement. It applies to first-party, second-party and third-party verification activities, though third-party independent verification provides the highest level of assurance.
RBA Registrars conducts GHG verification and validation engagements in accordance with ISO 14064-3, offering both limited assurance and reasonable assurance levels depending on client requirements and regulatory obligations.
Third-party verification provides the highest level of credibility for GHG assertions.
Limited assurance (moderate confidence) or reasonable assurance (high confidence).
Systematic engagement from planning through evidence gathering to the opinion statement.
Assessment considers materiality thresholds appropriate to the intended use of the assertion.
Verification under ISO 14064-3 is accepted by emissions trading schemes and reporting frameworks.
ISO 14064-3 Clause Structure
The standard provides a systematic framework for planning, conducting and reporting GHG verification and validation engagements.
Key Benefits
Credible Assurance
Independent verification provides stakeholders with credible assurance that GHG assertions are materially correct and fairly stated.
Regulatory Compliance
Meet mandatory verification requirements under emissions trading schemes (EU ETS, UK ETS) and corporate reporting regulations.
Data Confidence
The verification process identifies errors, omissions and methodological weaknesses, improving data quality and reliability.
Market Credibility
Verified GHG data strengthens credibility of sustainability reports, CDP submissions and science-based target progress.
Carbon Market Access
Verification is a prerequisite for carbon credit issuance and trading under most voluntary and compliance carbon programmes.
Process Improvement
Verification findings drive continual improvement in data collection, calculation and reporting processes.
Contributes to UN Sustainable Development Goals
Certification contributes to achieving multiple United Nations Sustainable Development Goals (SDGs), supporting your organisation's sustainability commitments and ESG reporting.
Who Should Certify?
ISO 14064-3 applies to any organisation whose GHG assertions require independent verification or validation, regardless of sector.
Certification Process
Our process is structured, transparent and aligned with international requirements.
Submit your request with details of the assertion or claim, applicable standards, reporting period and assurance level required.
Our lead verifier develops a plan covering scope, criteria, materiality threshold, assurance level and sampling approach.
Strategic analysis and desk review of data, supporting documentation, calculation methodologies and evidence.
On-site activities to corroborate data with source documentation, interview personnel and inspect measurement systems.
Formal verification statement expressing an opinion on the conformity of the assertion with applicable criteria.
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