CSRD and ISO 50001
The Corporate Sustainability Reporting Directive (CSRD) requires large companies to report on sustainability, including energy use and CO2 emissions. ISO 50001 provides exactly the energy data you need for that: consumption per process, performance indicators, savings targets and results. Companies that are also covered by the EED obligation get two benefits from ISO 50001 at once.
ISO 50001 is not required for CSRD compliance. However, it provides 80-90% of the energy data that ESRS E1 asks for. Without ISO 50001 you have to collect and structure that data yourself.
What is the CSRD?
The CSRD is European legislation that requires companies to report on their impact on people and the environment. It replaces the older Non-Financial Reporting Directive (NFRD) and is considerably stricter.
| Aspect | Detail |
|---|---|
| Start date | Phased: 2024 (listed companies with 500+ FTE), 2025 (large companies), 2026 (listed SMEs) |
| Who is covered | Companies with 250+ FTE, or €50M+ turnover, or €25M+ balance sheet total (2 of 3 criteria) |
| Reporting standard | ESRS (European Sustainability Reporting Standards) |
| Verification | Mandatory assurance by an accountant or auditor |
| Estimated number of companies in NL | Around 2,000-3,000 directly, plus thousands indirectly through supply chain obligations |
Which CSRD requirements does ISO 50001 cover?
The CSRD reports according to ESRS standards. For energy, ESRS E1 (Climate Change) is the most relevant part. Below is which ESRS E1 requirements ISO 50001 covers.
| ESRS E1 requirement | What is asked | Does ISO 50001 cover this? |
|---|---|---|
| E1-1: Transition plan | Plan to address climate risks | Partly (action plans, objectives) |
| E1-2: Policy | Policy on climate mitigation | Yes (energy policy) |
| E1-3: Actions | Concrete measures and results | Yes (action plans, EnPI trends) |
| E1-4: Targets | Measurable climate and energy targets | Yes (SMART objectives against the baseline) |
| E1-5: Energy consumption | Total energy consumption, by source | Yes (energy review, sub-metering) |
| E1-6: Scope 1 and 2 emissions | Direct and indirect CO2 emissions | Partly (energy data as the basis, not the CO2 calculation itself) |
| E1-7: Scope 3 emissions | Value chain emissions | No (outside the scope of ISO 50001) |
| E1-8: Internal carbon price | Any internal carbon pricing | No |
| E1-9: Financial effects of climate | Financial impact of climate risks | No (although energy measures do save costs) |
Summary: ISO 50001 covers the requirements on energy use, policy, targets and measures well. For CO2 calculations and value chain emissions (scope 3) you need an additional methodology.
What does ISO 50001 deliver for CSRD in practice?
Data you can use directly
| CSRD reporting element | ISO 50001 source |
|---|---|
| Total energy consumption per year | Main meters + energy baseline |
| Consumption per energy type (electricity, gas, heat) | Energy review |
| Energy consumption per process or department | Sub-metering and the SEU register |
| Energy intensity ratios | EnPIs (kWh/product, kWh/m²) |
| Savings targets and results | Objectives vs. baseline |
| Measures taken and their effect | Action plans with progress |
| Energy policy | Signed policy (chapter 5 of the standard) |
Time and cost savings
| Scenario | CSRD reporting without ISO 50001 | CSRD reporting with ISO 50001 |
|---|---|---|
| Energy data collection | 80-160 hours (take a full inventory again) | 8-16 hours (data already available) |
| Setting up the measurement structure | €10k-€30k (meters, sensors, software) | €0 (already done during implementation) |
| External advice on energy reporting | €5k-€15k per year | €1k-€3k per year (review and supplement) |
| Data quality | Moderate (one-off inventory) | High (continuous monitoring) |
A company with ISO 50001 estimates it saves 60-80% of the time needed for the energy part of CSRD reporting.
Overlap with the EED obligation
Many CSRD-liable companies are also covered by the EED obligation 2027. Both schemes require energy data and energy management.
| Obligation | CSRD | EED 2027 |
|---|---|---|
| Who | 250+ FTE or €50M+ turnover (2 of 3 criteria) | Large enterprises (250+ FTE and €50M+ turnover) |
| What | Sustainability reporting (broad) | Energy management or a 4-yearly energy audit |
| How often | Annually | Continuously (with ISO 50001) or every 4 years (audit) |
| ISO 50001 as a solution | Not mandatory, but strongly recommended | Meets the EED requirement |
Conclusion: If you are subject to both CSRD and EED, ISO 50001 is the most efficient route. You build one system that meets both obligations.
What does ISO 50001 not cover for CSRD?
ISO 50001 focuses on energy. The CSRD is broader. You need additional systems or data for:
| CSRD component | Why ISO 50001 is not enough | Possible addition |
|---|---|---|
| Scope 3 emissions (value chain) | ISO 50001 looks at your own energy use | Value chain analysis, GHG Protocol |
| Biodiversity (ESRS E4) | Falls outside energy management | ISO 14001 or a separate biodiversity analysis |
| Social aspects (ESRS S1-S4) | ISO 50001 is about energy, not people | HR systems, ISO 45001 |
| Governance (ESRS G1) | Limited coverage through the management review | Corporate governance framework |
| Water use (ESRS E3) | Limited (some companies measure water use efficiency) | ISO 14001 or separate water management |
Practical approach: using ISO 50001 for CSRD
Already subject to CSRD, but no ISO 50001 yet?
If you are already working on CSRD reporting and find the energy part difficult:
- Start with an energy review. It immediately provides the data that CSRD asks for.
- Determine whether full ISO 50001 certification adds value (certainly if you are subject to the EED obligation).
- Use the step-by-step plan to implement in phases.
Already have ISO 50001, and now subject to CSRD?
You have a head start. Your energy data is already structured. What you still need to do:
- Map your ISO 50001 data to ESRS E1. Use the table above as a checklist.
- Supplement where needed. Scope 1/2 CO2 calculations, and possibly scope 3.
- Align reporting formats. CSRD requires specific formats (XBRL tagging).
Comparing costs
| Route | Cost of the energy part of CSRD (indication) |
|---|---|
| Without ISO 50001 (all ad hoc) | €15k-€40k in the first year, €8k-€20k per year thereafter |
| With ISO 50001 (already implemented) | €2k-€5k per year (supplementing and reporting) |
| Implementing ISO 50001 + CSRD | €25k-€60k in the first year, then €5k-€15k per year (but also covers the EED) |
More on the total cost of ISO 50001: costs and timeline.
More information
- EED obligation 2027: The legal obligation for energy management
- Subsidies and tax benefits: Financial schemes for ISO 50001
- Benefits of ISO 50001: All the concrete benefits in one place
- Combining ISO 50001 and ISO 14001: Integrating environment and energy
- Step-by-step plan: From zero to certification
Sources
- CSRD, European Commission : Official CSRD legislation
- ESRS, EFRAG : European Sustainability Reporting Standards
- ISO 50001:2018 : Official text of the standard
- Netherlands Enterprise Agency (Rijksdienst voor Ondernemend Nederland, RVO), EED energy audit : Dutch EED information