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ENISO 50001 Energy Management Systems
Confirms that an organisation knows where its energy goes, measures it properly, and reduces consumption in a way that can be verified.
This standard is not covered by our IAS or UAF accreditation scopes. ITS certifies it under its own scheme. See our accreditations →
What this certification proves
ISO 50001 does not certify that you use little energy. A busy factory uses more. What it certifies is that you know in numbers where energy goes, and that the numbers are improving.
Three tools carry the standard. The energy review breaks consumption down by equipment to find the few users that account for most of it — the significant energy uses (SEUs). The energy baseline (EnB) fixes the starting point for comparison. And the energy performance indicator (EnPI) — for instance kWh per tonne of product — divides consumption by output, so that a genuine efficiency gain can be distinguished from simply making less.
An audit does not ask how much money you saved. It asks whether those three are running on real measured data.
Who this is for
- Manufacturers where electricity, gas or fuel is a significant share of cost
- Sites subject to energy audit or target management obligations
- Organisations reducing carbon for ESG and supply-chain requirements
- Organisations that need defensible Scope 1 and 2 source data
🌱 How this relates to ESG
E EnvironmentalMaps directly onto the E (Environmental) pillar. Most greenhouse gas emissions come from energy use, so credible carbon numbers rest on this system.
- GRI 302 (Energy) and 305 (Emissions) — energy consumption, intensity, and Scope 1 and 2 emissions. The measurement system here is the source data
- Korea's K-ESG guideline, E domain «energy and greenhouse gas» — consumption, intensity, reduction targets and results. The EnPI answers this directly
- Foundation for Scope 1 and 2 accounting — emissions are consumption multiplied by an emission factor. If the consumption data is weak, the emissions figure is not credible
- Energy audit and target management obligations overlap substantially, so they can be prepared in one effort
- RE100 and supply-chain carbon requirements — when a large buyer asks a supplier for reduction data, a third-party certified system makes the data credible
What certification gives you
- Shows exactly where energy leaks — cutting by instinct fixes the wrong thingSee the 8-step process →
- EnPI lets you compare fairly even when production risesRequest audit duration and fees →
- Becomes the source data for Scope 1 and 2 greenhouse gas accounting in ESG reportsCheck a certified organisation →
- Shares its skeleton with ISO 14001 — a combined audit reduces days and costSee ISO 14001 →
- The higher energy's share of your cost base, the faster the paybackCertification mark rules →
How the requirements are structured
This is the overall shape of what the standard asks for. Working through it in this order is a sensible way to prepare.
| Clause | Title | In plain terms |
|---|---|---|
| 4 | Context | Identify energy-related legal and customer requirements, and set the scope — sites and equipment. |
| 5 | Leadership | Top management sets the energy policy and establishes an energy management team. |
| 6 | Planning | Energy review → significant energy uses (SEUs) → baseline (EnB) → performance indicators (EnPI) → objectives. The heart of the standard. |
| 7 | Support | Metering and data collection, competence, awareness and documented information. What is not measured cannot be managed. |
| 8 | Operation | Set operating criteria for significant users, and consider energy performance at design and procurement stage. |
| 9 | Performance evaluation | Compare EnPI against the baseline to confirm real improvement; audit internally and review. |
| 10 | Improvement | Remove causes of missed targets, and re-normalise the baseline when equipment or output changes. |
※ This is a summary written to help you, not the text of the standard. Please refer to the published standard for the exact requirements.
Before you apply, please check
Having these in place makes the audit considerably smoother. If you are not ready yet, you are still welcome to get in touch — we will set out what to do first, with a timeline.
- Is there one to three years of monthly energy data (electricity, gas, fuel)? Without it a baseline cannot be built
- Is there metering that can measure equipment or processes separately? A single main meter cannot show where energy leaks
- Have significant energy uses (SEUs) been selected, with the reasoning recorded?
- Are the energy baseline (EnB) and performance indicators (EnPI) defined? Check that the EnPI is normalised by output
- Are there energy objectives and action plans with owners and deadlines?
- Is there a procedure that considers energy performance when buying or designing equipment?
- Have you carried out at least one internal audit yourselves? (required before the audit)
- Does management review cover energy performance, with minutes?
You can apply for ISO 50001 certification here
Tell us your organisation’s size and the standards you need, and we will send you the audit duration and a fee proposal. You are free to decide after seeing it.
Tel 02-786-9242Email info@itscert.or.krFax 02-6940-9317
※ ITS Certification Body does not provide management system consultancy. Auditing and consultancy must remain separate. What we can do is explain the certification process and what you need to have in place.
Which audit division handles this
Audits against this standard are carried out by our 환경심사본부. See the organisation chart →