In this article, we explore differences explained and its importance for corporate sustainability management.
ISO 14001 and ISO 14064 are both international environmental standards, but they serve fundamentally different purposes. ISO 14001 establishes an environmental management system (EMS) framework, while ISO 14064 provides the methodology for quantifying, monitoring, and reporting greenhouse gas emissions. Understanding when and how to use each standard is essential for companies navigating European sustainability requirements.
Quick comparison
| Aspect | ISO 14001 | ISO 14064 |
|---|---|---|
| Purpose | Environmental management system | GHG quantification and reporting |
| Scope | All environmental impacts (waste, water, air, soil) | Greenhouse gas emissions only |
| Structure | Management framework (Plan-Do-Check-Act) | Three-part technical standard |
| Certification | Organisation-level certification | Project or inventory verification |
| Mandatory? | Voluntary | Voluntary (but supports CSRD) |
| First published | 1996 (revised 2015) | 2006 (revised 2018) |
| Key output | Certified EMS | Verified GHG inventory |
What is ISO 14001?
ISO 14001 is the world’s most widely adopted environmental management standard. It provides a framework for organisations to systematically manage their environmental responsibilities, reduce their environmental footprint, and demonstrate continuous improvement.
What it covers
ISO 14001 addresses the full spectrum of environmental impacts:
- Air emissions , not just GHGs, but pollutants, particulates, VOCs
- Water management , consumption, discharge, contamination prevention
- Waste management , reduction, segregation, hazardous waste handling
- Resource efficiency , energy, raw materials, packaging
- Biodiversity , land use, habitat protection, ecosystem impacts
- Regulatory compliance , tracking and meeting all applicable environmental laws
How it works
ISO 14001 follows the Plan-Do-Check-Act cycle:
- Plan: Identify environmental aspects and impacts, set objectives, establish procedures
- Do: Implement the EMS, train staff, execute operational controls
- Check: Monitor performance, conduct internal audits, measure against objectives
- Act: Review results, take corrective actions, pursue continuous improvement
Who needs it
ISO 14001 is voluntary but widely adopted by:
- Manufacturing companies facing complex environmental regulations
- Companies in supply chains where customers require certified EMS
- Organisations seeking to demonstrate environmental commitment to stakeholders
- Companies preparing for CSRD compliance (the management system strengthens ESRS governance disclosures)
Over 300,000 organisations worldwide hold ISO 14001 certification.
What is ISO 14064?
ISO 14064 is the international standard for GHG accounting. It provides detailed requirements for quantifying, monitoring, reporting, and verifying greenhouse gas emissions and removals at the organisational and project level.
The three parts
ISO 14064 consists of three complementary parts:
| Part | Title | What it does |
|---|---|---|
| Part 1 | Organisation level | Requirements for designing, developing, managing, and reporting a GHG inventory |
| Part 2 | Project level | Requirements for quantifying, monitoring, and reporting GHG emission reductions from specific projects |
| Part 3 | Verification | Guidance for validating and verifying GHG assertions |
Relationship to the GHG Protocol
ISO 14064-1 and the GHG Protocol are largely compatible. Both require:
- Defining organisational boundaries
- Classifying emissions by scope (Scope 1, Scope 2, Scope 3)
- Using recognised emission factors
- Documenting methodologies and assumptions
The key difference: the GHG Protocol is a voluntary corporate reporting framework, while ISO 14064 is a certifiable international standard. Many companies use the GHG Protocol methodology and then verify their inventory to ISO 14064 for additional credibility.
Who needs it
ISO 14064 is particularly relevant for:
- Companies that need third-party verified GHG inventories
- Organisations reporting under the CSRD (ISO 14064 verification strengthens assurance readiness)
- Companies participating in emissions trading schemes
- Businesses making public net-zero or carbon-neutral claims that require credible verification
Key differences in practice
Breadth vs depth
ISO 14001 is broad , it covers all environmental aspects but does not prescribe specific measurement methodologies. It asks: “Do you have a system to manage your environmental impacts?”
ISO 14064 is deep , it focuses exclusively on GHG emissions but with rigorous quantification requirements. It asks: “How much greenhouse gas do you emit, and can you prove it?”
Management system vs measurement standard
ISO 14001 certifies that you have processes in place. A company can be ISO 14001 certified without ever calculating a precise carbon footprint.
ISO 14064 verifies that your numbers are accurate. It does not require a broader environmental management system , just a robust GHG inventory.
Certification vs verification
- ISO 14001 certification: An accredited body audits your entire EMS against the standard’s requirements. Certification lasts three years with annual surveillance audits.
- ISO 14064 verification: An independent verifier checks your GHG inventory (data, methodology, calculations) against the standard. Verification is typically annual.
Cost and effort
| Factor | ISO 14001 | ISO 14064 |
|---|---|---|
| Implementation time | 6–12 months | 2–4 months |
| Ongoing effort | High (system maintenance, audits, training) | Moderate (annual inventory update) |
| Typical cost | €15,000–50,000 (initial certification) | €5,000–20,000 (initial verification) |
| Annual cost | €5,000–15,000 (surveillance audits) | €3,000–10,000 (re-verification) |
How they complement each other
These standards are not competitors , they work together. A comprehensive environmental strategy often includes both:
- ISO 14001 provides the management framework , governance structures, procedures, responsibilities, and continuous improvement cycles
- ISO 14064 provides the measurement rigour , precise GHG quantification within that management framework
Companies with both certifications demonstrate that they manage environmental impacts systematically (14001) AND measure their climate impact with verified accuracy (14064).
Connection to CSRD and ESRS
Under the CSRD, companies must report against the European Sustainability Reporting Standards. Both ISO standards support CSRD compliance:
ISO 14001 supports ESRS governance disclosures
- ESRS 2 (General disclosures): Governance structures, risk management processes
- ESRS E1 (Climate): Transition plan governance, environmental management policies
- ESRS E2-E5: Water, biodiversity, resource use, pollution management
ISO 14064 supports ESRS climate metrics
- ESRS E1-4: Gross Scope 1, 2, and 3 emissions
- ESRS E1-5: Energy consumption and mix
- ESRS E1-6: GHG intensity metrics
- ESRS E1-7: GHG removal and mitigation projects
Having either or both certifications strengthens your CSRD assurance readiness, as auditors can rely on existing verified data and management systems.
Which should you pursue first?
| If your priority is… | Start with… | Why |
|---|---|---|
| CSRD compliance | ISO 14064 | You need verified emission numbers for ESRS E1 |
| Broad environmental management | ISO 14001 | You need a systematic approach to all impacts |
| Customer/supply chain requirements | ISO 14001 | Most supply chain requirements specify 14001 |
| Net-zero or SBTi targets | ISO 14064 | Credible targets require verified baselines |
| Both environmental and climate | ISO 14001 first, then 14064 | The EMS provides structure for GHG management |
How Dcycle helps
Dcycle’s ESG platform supports both standards by automating the data collection and calculation that underpins environmental management and GHG accounting:
- Automated carbon footprint calculation aligned with GHG Protocol and ISO 14064 methodology
- 200+ data integrations for energy, waste, water, fleet, and procurement
- CSRD reporting with full ESRS datapoint mapping
- Audit-ready documentation supporting both ISO 14001 reviews and ISO 14064 verification
- Expert advisory to guide your certification and compliance strategy
Request a demo to see how Dcycle streamlines environmental data management for ISO compliance and CSRD reporting.
