Gap assessment & readiness review
We evaluate your current strategy and disclosures against IWA 42, identifying gaps, risks, and opportunities for alignment.
IWA 42 Net Zero Guidelines
Credible, Globally Aligned Net Zero Strategy
Why Net Zero alignment matters
IWA 42 provides a globally agreed framework for credible Net Zero strategy—ensuring your targets, reductions, and claims meet minimum expectations and avoid reputational risk. It helps organisations build transparency, consistency, and trust in their climate transition.
What is IWA 42
IWA 42:2022 outlines principles for defining and achieving Net Zero, including prioritising emissions reductions, setting science-based targets, and ensuring transparent governance. It bridges voluntary and regulatory frameworks with a common language for climate credibility.
Our IWA 42 Net Zero consultancy services
Arthian helps organisations embed IWA 42 principles into every stage of their climate strategy, from gap assessments and target setting to offsetting, governance, and framework integration. We tailor our support to your sector, ambition, and operational footprint.
Gap assessment & readiness review
We evaluate your current strategy and disclosures against IWA 42, identifying gaps, risks, and opportunities for alignment.
Science-based targets & roadmapping
We help define Net Zero in your context—setting validated targets and building actionable decarbonisation roadmaps.
Residual emissions & offsetting strategy
We guide offset strategy development, ensuring residual emissions are credibly defined and offset with high-integrity removals.
Scope 3 & value chain integration
We support engagement across your value chain—embedding Net Zero principles with suppliers, partners, and portfolio companies.
Governance, reporting & claims integrity
We help build governance structures and documentation to ensure your Net Zero claims are consistent, auditable, and credible.
Framework integration & alignment
We align your strategy with SBTi, ISO, GHG Protocol, TCFD, ISSB, CSRD, CDP, and PAS 2080—ensuring regulatory and voluntary coherence.
Sector-specific Net Zero support
We tailor IWA 42 integration for corporates, financial institutions, infrastructure, and ESG teams with complex Scope 3 footprints.
Science-based targets & roadmapping
We help define Net Zero in your context—setting validated targets and building actionable decarbonisation roadmaps.
Residual emissions & offsetting strategy
We guide offset strategy development, ensuring residual emissions are credibly defined and offset with high-integrity removals.
Scope 3 & value chain integration
We support engagement across your value chain—embedding Net Zero principles with suppliers, partners, and portfolio companies.
Governance, reporting & claims integrity
We help build governance structures and documentation to ensure your Net Zero claims are consistent, auditable, and credible.
Framework integration & alignment
We align your strategy with SBTi, ISO, GHG Protocol, TCFD, ISSB, CSRD, CDP, and PAS 2080—ensuring regulatory and voluntary coherence.
Sector-specific Net Zero support
We tailor IWA 42 integration for corporates, financial institutions, infrastructure, and ESG teams with complex Scope 3 footprints.
Why Choose Arthian's Net Zero Consultants?
Engineering services delivered by specialists:
Integration
Fully integrated with geotechnical, hydrological, and ecological disciplines.
Our Experience
National experience with regional insight and regulatory familiarity.
Our Understanding
Deep understanding of planning, infrastructure, and environmental interfaces.
Results Driven
Commitment to technical rigour, clear communication, and long-term outcomes.
Frequently Asked Questions
What is the difference between IWA 42 and SBTi Net Zero Standard?
IWA 42 provides overarching principles and definitions for credible Net Zero claims. SBTi offers specific methodologies for validating corporate targets. We help you align with both.
Is IWA 42 mandatory?
No, but it is increasingly recognised as the global reference for credible Net Zero claims—especially under investor and regulatory scrutiny.
How does IWA 42 treat offsetting?
Offsetting should only apply to residual emissions and must meet high-integrity standards. IWA 42 prioritises real emissions reductions.
Can I use IWA 42 alongside PAS 2080 or ISO 14068?
Yes—IWA 42 complements and strengthens these standards. We help you harmonise your approach across frameworks.
Get in Touch
We’d love to hear from you – whether you have a question, a project in mind, want to explore job opportunities, or just want to say hello.