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Accredited Greenhouse Gas Emission Audit for Corporate ESG and Compliance
Quality Calibration Solutions (QCS) provides accredited, third-party greenhouse gas (GHG) emission audit and verification services, a cornerstone for any organization serious about climate action and transparent reporting. Our expert audits are essential for accurately managing your carbon footprint, meeting mandatory regulatory requirements, satisfying investor demands for ESG data, and identifying significant operational efficiencies. From manufacturing plants to corporate enterprises, we transform complex emissions data into a verified, strategic asset that builds stakeholder trust and drives sustainable growth.
Our verification process is conducted in conformance with the highest global standards, including The Greenhouse Gas Protocol and ISO 14064-3, ensuring your emissions statement is accurate, credible, and globally recognized.

Why is an Accurate GHG Emission Audit Critical?
In today’s climate-conscious world, an organization’s greenhouse gas emissions are no longer a footnote; they are a headline metric reflecting its risk management, operational efficiency, and long-term viability. A professional, independent audit (known as verification) is the critical process that lends credibility to a company’s carbon accounting.
Preventing Climate Impact and Ensuring Corporate Stewardship
Greenhouse gases—primarily carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O)—trap heat in the atmosphere, driving global climate change. A GHG audit is the first step toward responsible climate stewardship. It provides a definitive, science-based inventory of an organization’s total climate impact, moving beyond estimates to establish a factual baseline. This verified baseline is the essential foundation for setting meaningful emission reduction targets, developing effective decarbonization strategies, and making a genuine contribution to mitigating climate change.
Guaranteeing Regulatory Compliance
Governments worldwide are implementing regulations to control GHG emissions. Frameworks like the EU Emissions Trading System (EU ETS), the US EPA’s Greenhouse Gas Reporting Program (GHGRP), and California’s Cap-and-Trade program mandate that covered facilities rigorously track and report their emissions. In nearly all cases, these reports must be independently verified by an accredited third party. Failure to comply can result in substantial financial penalties, operational sanctions, and legal action. A professional GHG audit ensures your reporting is accurate, defensible, and fully compliant with all legal obligations.
Meeting Strict Investor & Stakeholder Demands
The rise of ESG (Environmental, Social, and Governance) investing has put corporate climate performance under an intense spotlight. Investors, lenders, customers, and ratings agencies like CDP and MSCI now demand transparent and reliable emissions data to assess climate-related risks and opportunities. A self-declared emissions number is no longer sufficient. An independent, third-party verified GHG inventory is the gold standard that prevents accusations of “greenwashing,” demonstrates robust governance, and provides the trusted data needed to meet the stringent requirements of frameworks like the Task Force on Climate-related Financial Disclosures (TCFD).
Reducing Costs and Identifying Inefficiencies
At its core, a GHG inventory is an energy and resource consumption map. Greenhouse gas emissions are the direct byproduct of burning fuel, consuming electricity, and using raw materials. Therefore, every unit of CO₂ on your inventory represents a cost. A detailed audit highlights operational hotspots and inefficiencies—such as energy waste in buildings, suboptimal industrial processes, or inefficient logistics. By identifying the largest sources of emissions, the audit simultaneously reveals the most significant opportunities for cost savings through energy efficiency, process optimization, and waste reduction.
Our Comprehensive GHG Verification Capabilities
QCS provides end-to-end verification services for organizations of all sizes, from single facilities to multinational corporations. Our approach is rigorous, systematic, and aligned with global best practices.
Scopes & Emissions We Verify
Our accredited verifiers are qualified to audit the full spectrum of corporate emissions as defined by The GHG Protocol:
- Scope 1: Direct emissions from sources owned or controlled by the company (e.g., combustion of fuel in boilers, furnaces, and company-owned vehicles).
- Scope 2: Indirect emissions from the generation of purchased electricity, steam, heating, and cooling consumed by the company.
- Scope 3: All other indirect emissions that occur in a company’s value chain (e.g., purchased goods and services, business travel, waste disposal, transportation and distribution, use of sold products).
We verify all major greenhouse gases, including Carbon Dioxide (CO₂), Methane (CH₄), Nitrous Oxide (N₂O), and fluorinated gases (HFCs, PFCs, SF₆, NF₃).


Our Advanced Audit Process and Standards
We conduct our verification engagements in strict accordance with ISO 14064-3:2019, the international standard for the verification and validation of greenhouse gas statements. This ensures our process is impartial, evidence-based, and consistent.
Our standardized verification process includes:
- Strategic Review & Planning: We start by understanding your business, defining the organizational and operational boundaries of the inventory, and developing a risk-based verification plan.
- Data Systems Assessment: We review your methodologies for collecting activity data (e.g., fuel receipts, electricity bills, production records) and selecting emission factors to ensure they are accurate and appropriate.
- On-Site & Remote Verification: This phase involves a combination of site visits to key facilities and remote review of data trails. We conduct interviews with key personnel and trace data from its source to the final GHG assertion.
- Emission Calculation & Assertion Review: We perform our own calculations and cross-checks to corroborate your final emissions figures, resolving any discrepancies through a transparent process.
Issuing a Final Verification Statement: Upon successful completion, we issue an independent verification statement that provides a reasonable or limited level of assurance, confirming the accuracy and completeness of your GHG inventory.
Flexible Service Delivery: Corporate & Facility-Level Audits
We tailor our services to your specific reporting needs:
- Corporate-Level Verification: A comprehensive audit of the entire organization’s Scope 1, 2, and selected Scope 3 emissions, ideal for corporate sustainability reports, ESG disclosures, and enterprise-wide strategy.
- Facility-Level Verification: A focused audit on a specific plant or facility to meet the requirements of a mandatory regulatory program (e.g., EPA GHGRP, EU ETS).
Industries That Rely on Professional GHG Audits
- Energy & Utilities: As primary sources of emissions, verification is often mandatory and central to their business model.
- Manufacturing & Industrial: For managing emissions from energy-intensive processes like cement, steel, and chemical production.
- Transportation & Logistics: To account for fuel use across fleets of vehicles, ships, and aircraft.
- Technology & Data Centers: For accurately reporting the massive electricity consumption (Scope 2) required for their operations.
- Commercial Real Estate: To manage energy use across large property portfolios and achieve green building certifications.
Why Choose QCS for Your GHG Verification Needs?
Uncompromising Quality and ISO 14064 Accreditation
Our accreditation as a GHG verification body is your highest guarantee of competence and impartiality. It confirms that our processes and personnel meet the rigorous requirements of international standards, ensuring your final verification statement will be accepted by regulators, investors, and stakeholders worldwide.
Efficient, Phased Approach to Minimize Disruption
We manage the verification process to be as seamless and non-disruptive as possible. Our phased approach—from planning and risk assessment to final reporting—is clearly communicated, with a dedicated lead verifier serving as your single point of contact. A typical engagement is structured to provide clear milestones and predictable timelines.
Comprehensive, Decision-Ready Verification Reports
Our deliverable is more than just a pass/fail certificate. We provide a detailed management report alongside the formal Verification Statement. This report highlights our findings, identifies any data management risks or control weaknesses, and provides valuable recommendations for improving the efficiency and accuracy of your carbon accounting process in the future. All documents are accessible 24/7 on our secure client portal.
Service Performed by Accredited, Lead GHG Verifiers
Our team is composed of accredited Lead Verifiers who hold certifications for ISO 14064 and have extensive sector-specific expertise. This ensures they understand the unique operational nuances of your industry, allowing for a more effective and insightful audit.
Frequently Asked Questions about GHG Audits
Scope 1 covers direct emissions from sources you own or control. Scope 2 covers indirect emissions from purchased energy (mainly electricity). Scope 3 is a broad category covering all other indirect emissions from your value chain, from suppliers to customers.
A GHG inventory is the process a company undertakes to collect data and calculate its own emissions footprint. The GHG audit, more formally known as verification, is the independent, third-party review of that inventory to confirm its accuracy and conformity with established standards.
Verification provides credibility. It assures stakeholders that your emissions data is free from material misstatement and has been prepared with professional diligence. It is essential for regulatory compliance, trustworthy ESG reporting, and protecting your organization from accusations of greenwashing.
An emission factor is a certified coefficient that allows you to convert activity data into emissions data. For example, it tells you how many kilograms of CO₂ are emitted for every kilowatt-hour of electricity consumed from a specific grid, or for every liter of diesel fuel burned.
Get a Free, No-Obligation Quote for Your GHG Audit
Take the essential step toward credible climate reporting and strategic decarbonization. Contact our team of accredited verifiers to discuss your organization’s specific needs and receive a customized, no-obligation proposal for a professional GHG audit.
