Climate & Nature Assurance

We strengthen the reliability, accuracy, and traceability of your climate and ESG information, giving stakeholders confidence in what you report.

Independent ESG Assurance & Statutory Compliance

As sustainability disclosures become subject to mandatory assurance under Australian Sustainability Reporting Standards (ASRS), organisations require independent, audit-grade verification of their climate and nature-related information.

Acumentis provides independent ESG assurance services, delivered by qualified statutory auditors, alongside structured readiness and compliance support. We help organisations meet regulatory obligations with defensible, audit-quality evidence.

What is Climate & Nature Assurance?

Climate & Nature Assurance involves independent verification of sustainability disclosures, including:

  • Climate-related financial disclosures
  • Greenhouse gas emissions (Scope 1, 2 and 3)
  • Transition planning statements
  • Nature and biodiversity disclosures
  • Governance and risk management frameworks

Our assurance engagements are conducted in accordance with applicable Australian auditing and assurance standards

Why Sustainability Audits Matter Now

ASRS rules will soon require hard proof for every claim. We're moving from a standard that just checks the surface to one that demands evidence. 

Even if you don't report yet, your partners likely do. As part of their Scope 3 emissions story, they'll require verified data from you. Being assurance-ready makes you a preferred partner in the modern supply chain.

Better ESG compliance gives you a head start. It builds lender trust, strengthens your governance, and keeps your audit simple and cost-effective.

Our ESG Assurance Services

Acumentis works beside you to identify weaknesses and strengthen your evidence trails. Here's how we provide the confidence you need.

Independent ESG Assurance

Our statutory auditors conduct:

  • Limited assurance engagements
  • Reasonable assurance engagements (where required)
  • Verification of greenhouse gas inventories
  • Climate disclosure assurance aligned to ISSB / IFRS S1 & S2
  • Nature-related disclosure assurance aligned to emerging TNFD guidance

ESG Compliance & Readiness Assessments

Where independence requirements permit, we provide structured ESG compliance support to strengthen internal systems prior to formal assurance.

This includes:

  • ESG risk assessment
  • Gap analysis against ASRS and ISSB
  • Internal control review
  • Documentation and traceability testing
  • Governance framework evaluation

Methodology and Assumption Review

We assess whether:

  • Emissions calculation methodologies
  • Climate scenario assumptions
  • Nature-related metrics
  • Target-setting frameworks

Are consistent, transparent and regulator-aligned.

Governance and Data-Management Evaluation

We evaluate:

  • Data ownership structures
  • Control design and operation
  • Board oversight processes
  • Risk integration frameworks
  • Policy documentation

Strong governance is critical to achieving assurance without qualification.

Evidence Testing and Validation

We test the traceability of disclosed metrics back to:

  • Primary source documentation
  • Operational data input
  • Approved calculation methodologies

Traceability underpins both limited and reasonable assurance conclusions.

Nature & Biodiversity Assurance

As nature-related reporting expectations expand, we verify:

  • Biodiversity impact disclosures
  • Natural capital claims
  • Land-use and ecosystem metrics
  • Alignment with TNFD-related guidance

Nature disclosures are subject to the same evidentiary scrutiny as climate disclosures.

Our People

Your Climate & Nature Assurance Experts

Contact one of our Climate & Nature Assurance specialists to discuss how we can support your climate reporting needs.

Simon Altschwager

Carbon Farming & Natural Capital Specialist
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Joe Stansfield

Director - Commercial Valuations, Systems & Sustainability
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Neha Sen

Group Executive Director – Marketing, Experience & Innovation
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Madeleine Hillsley

National Customer Experience Advisor
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Acumentis ESG

Why Work With Acumentis?

Independent statutory audit capability

Deep experience in valuation and asset-based industries

Integrated climate, governance and reporting expertise

National coverage with regional understanding

We combine audit rigour with practical ESG knowledge to deliver defensible, regulator-aligned outcomes. To learn more, contact us for a free consultation and quote.

Frequently Asked Questions

Limited assurance involves moderate testing to confirm nothing looks wrong. Reasonable assurance is a much higher standard. It's an audit-grade check that requires extensive evidence to prove every data point is accurate.

It lets you find and fix data gaps before the formal audit begins. This prevents reputational damage and reduces the time and cost of the final verification. It's much better to find an error yourself than have a regulator find it for you.

Any company reporting under ASRS or global rules will eventually need Sustainability Audits. It's also for businesses that want to use their ESG performance to win better loan rates or secure large contracts with Group 1 companies.

This involves verifying claims about biodiversity and ecosystems. It ensures your disclosures about natural capital and your impact on the local environment are just as robust and traceable as your carbon data.

Traceability means you can prove every number in your report comes from a verified source. If you report a carbon number, an auditor needs to see the exact utility bill or fuel receipt that generated that figure.

Yes, ASRS rules will eventually require mandatory assurance. We help you get your systems ready now so you don't face a crisis when those audit deadlines arrive.

Case Studies

Climate & ESG in Action

Explore our case studies showing how our ESG, climate and sustainability solutions deliver impact across industries, scales and stages of maturity—from readiness and reporting through to delivery and capability‑building.
Our Solutions

Simplifying Complexity. Amplifying Impact

ESG isn’t one-size-fits-all.
Our solutions are practical, tailored, and designed to meet you where you are. Each service follows a structured approach so you know exactly what to expect and what comes next.

Start the conversation

Connect with our ESG and climate advisory team to explore practical solutions that fit where you’re at.

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Acumentis acknowledges the Traditional Custodians of the lands where we live, learn and work and their connections to land, sea and community throughout Australia.
We pay our respect to their Elders past, present and emerging and extend that respect to all Aboriginal and Torres Strait Islander people we work with and walk beside today.

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