Audit and Assurance
Independent verification is essential for credibility and stakeholder confidence. We offer high-quality audit and assurance and second party opinion services to validate your sustainability initiatives.
Greenhouse Gas Audit and Assurance
Oxygen Consulting provides assurance against the Greenhouse Gas Protocol and ISO 14064-1 standards, verifying organisational greenhouse gas emissions inventories - whether as a standalone statement, part of a sustainability report, an NZ CS climate-related disclosure, or for the Carbon Neutral Government Programme (CNGP).
We are trained Carbon Auditors (Certified Carbon Auditor training - CEP) and are a preferred supplier to the Government Carbon Neutral Programme (CNGP). Our engagements uphold the ethics and principles set out under NZ SAE 1 and ISO 14064-3:2019.
Second Party Opinion
Oxygen Consulting provides trusted second-party opinions and annual reviews to validate the alignment of your sustainability-linked financing with relevant industry principles including the Loan Market Association (LMA) Sustainability-Linked Loan Principles (SLLPs), Green Loan Principles (GLPs), Social Loan Principles (SLPs), and International Capital Market (ICMA) guidelines. Our assessments validate the credibility and transparency of your financed activities, ensuring they meet best practices for sustainable finance.
We are a preferred supplier to several New Zealand banks and combine technical expertise with hands-on experience to ensure a strong understanding of the work we are providing an opinion over.
Peer Review
If you are looking for a more informal ‘second set of eyes’ over your sustainability plans, communications or disclosures, Oxygen Consulting provides independent peer review services that offer constructive feedback, drawing on our deep technical knowledge and capability across many industries and best practice standards.
Gap Analysis
Oxygen Consulting helps businesses assess their current sustainability performance against industry standards, regulatory requirements, and best practices.
Whether you’re aligning with sustainability frameworks or preparing for certification, we identify exactly where the gaps are and provide a clear, actionable roadmap to close them. We can provide a gap analysis across a range of frameworks and standards, such as the Global Reporting Initiative (GRI), New Zealand Climate Standard (NZ CS), Australian Accounting Standards Board (ASSB S1 and S2), International Financial Reporting Standards (IFRS S1 and S2), the Transition Plan Taskforce (TPT), B Corporation Certification (B Corp), or Science-Based Target initiative (SBTi).
With expert benchmarking and tailored recommendations, we give you the insights needed to improve performance, meet compliance, and drive meaningful progress.
Case Studies
My Food Bag
Greenhouse Gas Audit and Assurance
“Oxygen Consulting were a pleasure to work with. They brought a clear, structured approach to the assurance process and delivered a report that was both comprehensive and easy to understand. Their work gave us the confidence we needed to communicate our emissions profile transparently and move forward with our sustainability strategy.”
Trish Whitwell, Chief Customer Officer, My Food Bag
Lyttleton Port Company
Gap Analysis
“Oxygen Consulting has been great to work with throughout this process. The team is highly collaborative, and we’ve been really impressed with their depth of knowledge and data analysis skills! The insights from their gap analysis have been key in helping us align with CCHL’s Group Reporting Framework, and their continued support is enabling us to prepare a more robust, transparent FY25 disclosure.”
Crystal Lenky, Head of Environment and Sustainability, Lyttelton Port Company
Cleanery
Peer Review
“Excellent service - very knowledgeable, friendly and thorough - highly recommended.”
David Hassell, Head of Engineering, Cleanery
2degrees
Scope 3 Pre-Assurance Readiness Review
“Raedon was excellent to work with, he provided clear and useful feedback. The Oxygen team were flexible and easy to work with!”
Rebecca Lindegger, Head of Sustainability and Purpose, 2degrees
Southern Cross Healthcare
FY26 Greenhouse Gas Emissions Assurance
“It was an absolute joy working with Raedon on the audit. It was the smoothest audit of the more than 15 I have been involved in. He clearly set out the audit requirements and followed through on time and to a high standard.”
Greg Nelson, Head of ESG & Responsible Business, Southern Cross Healthcare
PGG Wrightson
FY25 and FY26 Greenhouse Gas Emissions Assurance
“Oxygen Consulting were professional, knowledgeable and prompt in delivering against all the objectives set out as part of our GHG assurance engagement. We had no issues throughout the process, and when we had questions these were answered much quicker than expected, which gave a strong impression that the team was across the detail and had dedicated the time to working with us. I haven’t hesitated to recommend Oxygen Consulting to others already.”
Michael Anderson, Sustainability Manager, PGG Wrightson