GHG Assurance

What is GHG assurance?

GHG assurance is the process of independently assessing and confirming the accuracy and reliability of a company’s greenhouse gas emissions data. Assurance involves an independent assessment of data, methodologies, and processes, performed on a risk-based and selective basis, to confirm they comply with established standards, such as those outlined in the Greenhouse Gas Protocol or specific regulatory requirements.

Benefits of GHG statement assurance

• Identify risks & opportunities –  By thoroughly assessing and auditing emissions data, organisations can pinpoint areas for improvement, operational inefficiencies, and potential cost-saving measures.
• Satisfy stakeholder demands – GHG assurance demonstrates a commitment to transparency and environmental responsibility, meeting the demands of stakeholders for accurate and credible information.
• Gain a competitive edge – GHG assurance signals a proactive approach to environmental responsibility and sustainability, and can be a strong differentiator, attracting environmentally conscious customers and partners.
• Increase reliability of data – Crucial for informed decision-making, goal-setting, and monitoring progress towards sustainability targets, for both internal management purposes and external reporting requirements.
• Stand out to investors – GHG assurance provides investors with confidence in the company’s commitment to sustainability and demonstrates a proactive approach to managing environmental risks.
• Minimise costs for inaccurate reporting – Inaccurate or incomplete reporting of greenhouse gas emissions can result in financial penalties, damage to reputation, and loss of business opportunities.

How we can help with your GHG assurance

We assure GHG statements in accordance with ISO 14064-3 and ISAE 3410, applying the principles of ISAE 3000 (Revised). Looking ahead, we are aligning our methodology with ISSA 5000, the new global baseline for sustainability assurance, which will apply to all GHG and sustainability engagements from 2026. Our independent assurance team conducts verification in line with ISO 14064-3 and ISAE 3410 requirements¹.  Collaborating with you, we identify emission sources, assess data accuracy, and implement robust verification methods. Following the audit, we provide a detailed feedback report, highlighting conformity and identifying data gaps. Once issues are resolved, a verification statement is issued. Our goal is to help organisations meet regulatory requirements, enhance environmental credibility, and prepare for the future.

Related Services

GHG inventories

Our in-depth GHG inventories cover scope 1, 2 and relevant scope 3 categories, providing a robust and transparent dataset tailored to your organisation’s needs.

Net zero roadmaps

Our net zero roadmaps are aligned with climate science and standards, on a full scope 1, 2 and 3 baseline.

(1) Limited assurance is substantially less in scope than a reasonable assurance engagement and based primarily on inquiries, analytical procedures, and limited testing.