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about ISO 50003
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1 . W H AT I S T H E M O S T I M P O R TA N T C O N T E N T O F
ISO 50003?

ISO 50003 specifies requirements on the certification
bodies regarding auditing and certification of energy
management systems (EnMS). Organizations seeking ormaintaining ISO 50001 certification will also be impacted
directly or indirectly by this standard in a variety of ways.
The most salient points of the standard impacting
organizations are:
1. The calculation requirements for the audit duration havechanged. Consideration of factors such as significant
energy uses (SEUs) and EnMS-effective personnel havenow been included.
2. The organization will now be categorized into eighttechnical areas and auditors must demonstrate skills in

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the technical area corresponding to each organization
being audited.
3. Requirements relating to the auditing processes
have been modified. This means that in the future,organizations will be required to clearly demonstrate animprovement in energy performance for the EnMS to beeligible to be certified or continue certification.
2 . W I L L T H E R E B E A N I N C R E A S E I N T H E D U R AT I O N O F
MY AUDIT?

As a result of changes to the calculation requirements,
there may be changes to the previously determined auditduration. Whether the audit duration increases, decreases
or remains the same can only be determined on a case-bycase basis and will also depend on factors such as EnMSeffective personnel and significant energy uses (SEUs).

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3. W H I C H AU D I T S A R E A FF EC T E D?

7. W H E N I S A N E N E R G Y U S E R C O N S I D E R E D T O B E

To begin with, all certification and recertification audits areaffected by the new requirements. The new requirements
must be implemented by all certification bodies no later
than October 14, 2017. For organizations that are in thesurveillance phase of certification as of this effective date,
ISO 50003 requirements must be applied no later than thenext recertification audit.

SIGNIFICANT?

4 . W H AT A R E E N M S - E F F E C T I V E P E R S O N N E L ?

According to ISO 50003, EnMS-effective personnel arepeople who actively contribute to fulfilling the requirementsof an EnMS. In principle, this includes all persons who
have a significant influence on the EnMS, who take on
responsibilities for the EnMS and others who can impact
energy performance or can have a significant influenceon energy consumption. Examples include seniormanagement, the management representative, energy
management team, heads of production or maintenanceand other individuals responsible for significant energyuses.
5 . W H AT H A P P E N S W H E N I D O N O T G I V E A C C U R AT E
I N F O R M AT I O N F O R E N M S - E F F E C T I V E P E R S O N N E L
O R I N A D V E R T E N T LY M A K E A N I N C O R R E C T
D E C L A R AT I O N ?

A part of the auditing process is to verify EnMSeffective personnel and other criteria during the audit. If
significant new knowledge is gained here, the auditor may
recommend that the inputs used to calculate the audit
duration be immediately amended accordingly.

According to ISO 50001, the organization specifies its
own significance criteria to determine which energy uses
will be considered as SEUs. However, to ensure uniform
application when the certification body calculates theaudit duration, it is nevertheless expedient to specify asignificance threshold value. As such, an energy use is only
considered to be significant if it consumes at least 5% of
the organization’s total energy consumption.
8 . M U S T I E N T E R E A C H E N E R G Y U S E I N D I V I D U A L LY ?

No, you do not need to list each individual energy use.
Typical equipment or processes that are comparable in typeand size can be reasonably grouped together and definedas one SEU. This includes structurally identical equipmentthat are of a comparable type and construction year (e.g.,injection molding machines).
9 . T O W H AT E X T E N T A M I A F F E C T E D B Y T H E
TECHNICAL AREAS?

All auditors must undergo a reevaluation of their skills to beapproved for the respective technical areas. This procedure
is a familiar one from other standards, such as ISO 9001
and ISO 14001. Under certain circumstances, this can meanthat an auditor does not fulfill the requirements for skills in
the technical area relating to a particular organization. This
may result in assigning another auditor who is approved forthat particular technical area.
1 0 . W H AT I S T H I S I M P R O V E M E N T O F E N E R G Y
PERFORMANCE ALL ABOUT?

6 . W H AT A R E S E U S ?

Energy use is defined as how the energy is applied(e.g. ventilation, lighting, heating, cooling, production,etc.). Significant energy uses (SEUs) are energy usesthat account for substantial energy consumption and/or have considerable potential for energy performance
improvement.

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As in previous audits, energy performance will bereviewed. According to ISO 50003 requirements, however,organizations must now clearly present data and proveenergy performance has been improved at all initialcertification and recertification cycles in order to be eligible
for certification or continued certification.

311 . H O W C A N I P R O V E A N I M P R O V E M E N T O F E N E R G Y

1 2 . A R E T H E R E A N Y A I D S T H AT W I L L H E L P M E T O

PERFORMANCE?

I M P L E M E N T T H E R E Q U I R E M E N T S O F I S O 5 0 0 0 1?

Annex C of ISO 50003 provides a range of approachesfor this. One of these approaches would be to show thatyour energy consumption has decreased over time, while
production rates remain at similar levels. Another example
includes the upkeep of aging equipment that would haveotherwise resulted in a predicted degradation of energy
performance over time. By applying countermeasures suchas proper operational or maintenance controls that delay
or reduce the predicted performance reduction curve candemonstrate improved energy performance.

There are various companion standards that have provenhelpful in providing support to organizations developing andimplementing an EnMS in accordance with ISO 50001:
ISO 50004: Guidance for the implementation,maintenance and improvement of an energy management
system
ISO 50006: Measuring energy performance using energy
baselines (EnB) and energy performance indicators (EnPI)- General principles and guidance
ISO 50015: Measurement and verification of energy
performance of organizations – General principles andguidance
ISO 50047: Energy savings – Determination of energy
savings in organizations········® TÜV, TUEV and TUV are registered trademarks. Their use and exploitation requires prior consent.

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