International GHG Verification Services

Carbon Footprint Verification

Independent verification of corporate and product carbon footprint reports based on ISO 14064-1, ISO 14064-3, ISO 14067, and internationally recognized greenhouse gas reporting principles.
WECERT provides third-party verification services for organizations that need credible greenhouse gas information for ESG reporting, sustainability communication, customer requirements, supply-chain transparency, tender submissions, and climate-related performance monitoring.

Corporate Footprint

Product Footprint

GHG Verification

ISO 14067 Statement

ISO 14064-1 Statement

What Is Carbon Footprint Verification?

Carbon footprint verification is an independent review of greenhouse gas information, calculation methods, boundaries, assumptions, emission factors, activity data, and supporting evidence. The purpose is to confirm whether the reported carbon footprint information is complete, consistent, traceable, and materially correct against the agreed criteria.

GHG Data

Calculation Method

Evidence Review

Verification Conclusion

Verified Statement

ISO 14064-1

Corporate GHG Inventory

ISO 14064-3

Verification & Validation of GHG Statements

ISO 14067

Product Carbon Footprint

Corporate & Product Scope

Organization and Product Level Verification

Verification Output

Verification Report and Statement

Independent Carbon Footprint Verification for Reliable Climate Information

Carbon footprint verification is an independent assessment of greenhouse gas information prepared by an organization, consultant, technical team, or sustainability department. The objective is to evaluate whether the reported emissions data, calculation methods, reporting boundaries, emission factors, assumptions, exclusions, and supporting evidence are reasonable, traceable, and aligned with the selected verification criteria.

Organizations increasingly use carbon footprint information for ESG reporting, sustainability disclosures, customer communication, supply-chain requirements, tender participation, product claims, environmental improvement planning, and climate-related decision-making.

However, unverified carbon data may create uncertainty for customers, investors, regulators, procurement teams, business partners, and other interested parties. Independent verification helps improve confidence in the reported greenhouse gas information by reviewing the evidence behind the carbon footprint calculation and confirming whether the reported statement is materially correct within the agreed scope and criteria.

Verification Service Coverage

Corporate GHG Inventory

ISO 14064-1

Product Carbon Footprint

ISO 14067

GHG Statement Verification

ISO 14064-3

Verification Output

Verification Report & Statement

Carbon footprint data reviewed through evidence-based verification

Corporate and Product Carbon Footprint Verification

WECERT provides verification services for both organization-level and product-level carbon footprint reports. The correct verification approach depends on whether the client needs to verify the emissions of an organization or the carbon footprint of a specific product or service.

Corporate Carbon Footprint Verification

  • Organization-Level GHG Inventory
  • Direct and indirect emissions
  • Scope 1, Scope 2 and relevant Scope 3
  • ESG and sustainability reporting

  • Corporate carbon reduction planning

Organization Level
VS
Product Level

Product Carbon Footprint Verification

  • Product-level carbon footprint
  • Life cycle stages
  • Functional or declared unit
  • Product carbon claims

  • Customer and supply-chain requirements

ISO 14064-1, ISO 14064-3 and ISO 14067

WECERT’s carbon footprint verification services may be performed using internationally recognized greenhouse gas standards and verification principles. These standards help define how greenhouse gas information is quantified, reported, verified, and communicated.

ISO 14064-1

Corporate GHG Inventory

ISO 14064-1 is used for organization-level greenhouse gas inventories. It provides principles and requirements for quantifying and reporting greenhouse gas emissions and removals at organizational level.

ISO 14064-3

Verification and Validation of GHG Statements

ISO 14064-3 provides requirements and guidance for verification and validation of greenhouse gas statements. It is used to guide the independent verification process, including planning, risk assessment, evidence gathering, evaluation of findings, and the final verification conclusion.

ISO 14067

Product Carbon Footprint

ISO 14067 is used for the quantification and reporting of the carbon footprint of products. It is based on life cycle assessment principles and is relevant when the carbon footprint relates to a specific product, product group, or service.

Certificate Search Terms Explained

Searching for an ISO 14067 or ISO 14064 Certificate?

Many organizations search for an “ISO 14067 certificate,” “ISO 14067 certification,” “ISO 14064 certificate,” or “ISO 14064 certification” when they need formal evidence that their carbon footprint report or greenhouse gas inventory has been independently reviewed.

In practice, ISO 14067 and ISO 14064 are not used in the same way as traditional management system certification standards such as ISO 9001. ISO 14067 is used for the quantification and reporting of product carbon footprints, while ISO 14064-1 is used for organization-level greenhouse gas inventories. Verification of greenhouse gas statements is normally performed using ISO 14064-3 or other agreed verification criteria.

The appropriate output is usually a verification statement, verification report, or carbon footprint verification certificate confirming that the reported greenhouse gas information has been verified against the agreed scope and criteria.

WECERT supports organizations that need credible verification evidence for corporate GHG inventories, product carbon footprint reports, ESG reporting, customer requirements, supply-chain requests, tender submissions, and product-level carbon claims.

Product Carbon Footprint Verification Statement

Based on ISO 14067

Verified Scope: Product Carbon Footprint Report
Output: Verification Statement / Report / Certificate
Criteria: ISO 14067
Verification Result: Verified, subject to verification conclusion

Corporate GHG Inventory Verification Statement

Based on ISO 14064-1 and ISO 14064-3

Verified Scope: Corporate GHG Inventory Report
Output: Verification Statement / Report / Certificate
Criteria: ISO 14064 -1 / ISO 14064-3
Verification Result: Verified, subject to verification conclusion

What WECERT Verifies

Our verification activities focus on the data, methods, boundaries, assumptions, and evidence behind the reported carbon footprint.

GHG Report

  • Corporate GHG inventory report
  • Product carbon footprint report
  • Final GHG statement

  • Carbon footprint statement or claim

Boundaries

  • Organizational boundary
  • Operational boundary
  • Product system boundary
  • Reporting period
  • Base year information

Activity Data

  • Electricity records
  • Fuel records
  • Production data
  • Transport and logistics records
  • Raw material consumption data

Emission Factors

  • Emission factor references
  • Conversion factors
  • Global warming potential values
  • Source references
  • Applied calculation criteria

Calculations

  • Calculation formulas
  • Allocation rules
  • Assumptions
  • Exclusions
  • Uncertainty and data quality

Evidence

  • Utility bills
  • Fuel invoices
  • Supplier data
  • Operational records
  • Internal review records

Carbon Footprint Verification Process

WECERT follows a structured verification process to review the reported carbon footprint information and the evidence supporting it. The process is designed to evaluate the reliability, traceability, and consistency of greenhouse gas information before issuing the agreed verification output.

Inquiry & Scope Confirmation

WECERT reviews the organization, product, reporting purpose, intended users, selected criteria, reporting period, sites, boundaries, and expected verification output.

Contract Review & Verification Planning

The proposed verification scope is reviewed and a verification plan is prepared, including verification objectives, criteria, level of assurance, materiality, required evidence, and technical competence needs.

Document and Data Review

The verification team reviews the GHG report, product carbon footprint report, calculation files, methodology, emission factors, boundary statement, activity data, assumptions, exclusions, and supporting records.

Risk Assessment & Sampling

Areas where material misstatement may occur are identified, and samples of data, records, emission sources, calculations, and supporting evidence are selected for detailed review.

Findings and Corrections

If errors, omissions, unclear assumptions, inconsistent data, or unsupported claims are identified, the organization is requested to review and correct the report before final conclusion.

Final Verification Output

After verification activities and final review are completed, WECERT issues the agreed verification output, such as a verification report, verification statement, or carbon footprint verification certificate.

Documents Required for Carbon Footprint Verification

The documents required for carbon footprint verification depend on whether the verification is for a corporate GHG inventory or a product carbon footprint report. Complete and traceable records help improve verification efficiency and reduce delays.

  • GHG inventory report
  • Organizational boundary description
  • Operational boundary description
  • Reporting period definition
  • Site list
  • Emission source list
  • Scope 1, Scope 2 and relevant Scope 3 data
  • Base year information, where applicable
  • Internal review and approval records

  • Product carbon footprint report
    Product definition
  • Functional unit or declared unit
  • Product system boundary
  • Process flow diagram
  • Life cycle stages included in the assessment
  • Raw material and packaging data
  • Production quantity records
  • Allocation rules and assumptions

  • Electricity consumption records
  • Fuel consumption records
  • Refrigerant records
  • Vehicle fuel records
  • Transport and logistics records
  • Production records
  • Raw material consumption records
  • Packaging consumption records
  • Waste records
  • Supplier data, where applicable

  • Emission factor sources
  • Conversion factors
  • Global warming potential values
  • Database references
  • Country-specific or sector-specific emission factors
  • Emission factor selection justification
  • Version or publication year of emission factor sources

  • Calculation methodology statement
  • Assumptions list
  • Exclusions list
  • Uncertainty assessment
  • Data quality assessment
  • Cut-off criteria
  • Boundary justification
  • Changes from previous reporting periods, where applicable

  • Internal review evidence
  • Management approval records
  • Data owner confirmation
  • Previous verification statements, where applicable
  • Correction records
  • Version control of the carbon footprint report
  • Final approved GHG statement

Who Needs Carbon Footprint Verification?

Carbon footprint verification is useful for organizations that need reliable and independently reviewed greenhouse gas information. Verified carbon footprint information helps organizations demonstrate that their climate-related data is not only calculated, but also reviewed against defined criteria and supported by evidence.

Manufacturing

Food & Beverage

Packaging

Construction Materials

Logistics & Transportation

Energy-Intensive Industries

Hospitality

Exporters & Suppliers

Benefits of Carbon Footprint Verification

Independent carbon footprint verification helps organizations improve the credibility, reliability, and usefulness of their greenhouse gas information.

Strengthen GHG Data Credibility

Demonstrate that reported greenhouse gas information has been independently reviewed against defined criteria, boundaries, calculation methods, and supporting evidence.

Support ESG and Sustainability Reporting

Use verified carbon footprint information to support ESG reports, sustainability disclosures, climate-related communication, and stakeholder reporting.

Reduce Unsupported Carbon Claims

Verification helps reduce the risk of inaccurate, incomplete, or unsupported carbon footprint claims used in reports, tenders, product communication, or public statements.

Respond to Customer and Supply-Chain Requirements

Provide customers, procurement teams, retailers, brand owners, and supply-chain partners with more credible carbon footprint information.

Support Product Carbon Footprint Evidence

For product-level reporting, verification provides stronger confidence in product carbon footprint calculations, life cycle boundaries, assumptions, and data sources.

Improve Carbon Reduction Planning

Verified carbon data helps organizations identify major emission sources, improve data quality, and create a more reliable basis for reduction targets and action plans.

Important note: Carbon footprint verification does not automatically reduce emissions. However, it improves the reliability of the information used for emissions management, reduction planning, climate-related decision-making, and external communication.

Why Choose WECERT for Carbon Footprint Verification?

WECERT provides independent conformity assessment, certification, verification, validation, inspection, and training services for organizations seeking credible evidence of compliance and performance. For carbon footprint verification, WECERT combines technical understanding of greenhouse gas reporting, management system auditing, conformity assessment principles, evidence-based verification, and sector-specific operational knowledge.

Independent Verification Approach

Evidence-based assessment of greenhouse gas information, supporting records, calculation methods, boundaries, assumptions, and final carbon footprint statements.

Corporate and Product Scope

Verification services for organization-level GHG inventories and product-level carbon footprint reports based on the client’s reporting objective.

Standards-Based Methodology

Verification activities aligned with recognized greenhouse gas standards, including ISO 14064-1, ISO 14064-3, and ISO 14067.

Sector-Specific Understanding

Suitable for manufacturing, food and beverage, packaging, logistics, construction materials, hospitality, exporters, suppliers, and energy-intensive organizations.

Clear Verification Output

Verification output may include a verification statement, verification report, or carbon footprint verification certificate, depending on the agreed scope and conclusion.

Support for Market Confidence

Verified carbon footprint information can support customer requirements, ESG reporting, supply-chain transparency, tender submissions, and product carbon claims.

Still have questions? We have answered the most common questions organizations ask before applying for Carbon Footprint Verification

Carbon Footprint Verification FAQ

Whether you are implementing a Carbon Footprint Verification Process for the first time, the following questions address some of the most common topics organizations ask before starting their Verification journey.

Carbon footprint verification is an independent review of greenhouse gas information, calculation methods, boundaries, assumptions, emission factors, activity data, and supporting evidence. The purpose is to confirm whether the reported carbon footprint information is complete, consistent, traceable, and materially correct against the agreed criteria.

Carbon footprint calculation is the preparation of the greenhouse gas inventory or product carbon footprint study. Carbon footprint verification is the independent review of that calculation and its supporting evidence. To maintain impartiality, the same party should not normally prepare and independently verify the same carbon footprint report.

ISO 14064-1 is an international standard used for organization-level quantification and reporting of greenhouse gas emissions and removals. It is commonly used for corporate GHG inventories and organizational carbon footprint reporting.

ISO 14064-3 provides requirements and guidance for the verification and validation of greenhouse gas statements. It supports the independent review of GHG information, including organization-level, project-level, and product-level GHG statements.

ISO 14067 is an international standard for the quantification and reporting of the carbon footprint of products. It is used for product carbon footprint studies and is based on life cycle assessment principles.

Many clients use the phrase “ISO 14067 certificate” when they need formal evidence that a product carbon footprint has been independently reviewed. In practice, ISO 14067 relates to product carbon footprint quantification and reporting. After successful verification, the appropriate output may be a product carbon footprint verification statement, verification report, or carbon footprint verification certificate based on the agreed scope and criteria.

For organization-level GHG inventories, the more accurate term is usually ISO 14064-1 verification or GHG inventory verification. After successful verification, the organization may receive a verification statement, verification report, or carbon footprint verification certificate depending on the agreed verification arrangement.

Carbon footprint verification may not be required in every ESG reporting situation, but it is strongly useful when organizations need more reliable, transparent, and credible greenhouse gas information. Verified carbon data can support ESG disclosures, customer reporting, investor communication, tenders, and sustainability claims.

Corporate carbon footprint relates to the greenhouse gas emissions and removals of an organization. Product carbon footprint relates to the greenhouse gas emissions associated with a specific product or service across defined life cycle stages.

Typical information includes the GHG report, product carbon footprint report, calculation files, reporting boundary, activity data, utility bills, fuel records, production records, logistics data, emission factors, assumptions, exclusions, uncertainty information, and supporting evidence.

Verification itself does not reduce emissions. However, it improves the reliability of carbon data, which helps organizations identify emission sources, set reduction targets, monitor improvement actions, and communicate climate-related information more credibly.

The output may include a verification report, verification statement, or carbon footprint verification certificate. The exact output depends on the verification scope, criteria, intended use, and verification conclusion.

Product carbon footprint verification is useful for manufacturers, exporters, suppliers, brand owners, packaging companies, food producers, construction material producers, and companies that need product-level carbon evidence for customers, procurement, tenders, or sustainability claims.

Corporate carbon footprint verification is useful for organizations preparing ESG reports, sustainability reports, GHG inventories, climate disclosures, customer carbon submissions, internal carbon management programs, or carbon reduction plans.

Ready to Start Your

Carbon Footprint Verification Journey?

Share your corporate GHG inventory, product carbon footprint report, calculation file, ISO 14064 documentation, or ISO 14067 product carbon footprint study with WECERT for verification scope review and proposal preparation.
WECERT can review your verification requirements and help define the appropriate scope, criteria, reporting period, evidence needs, and verification output.