ISO 50001 based on ISO 50003

Using energy efficiently helps organizations save money as well as helping to conserve resources and tackle climate change. ISO 50001 supports organizations in all sectors to use energy more efficiently, through the development of an energy management system (EnMS). The standard is based on the management system model of continual improvement also used for other well-known standards such as ISO 9001 or ISO 14001. This makes it easier for organizations to integrate energy management into their overall efforts to improve quality and environmental management.

Training ISO Revision

Energy efficiency for lower cost and less environmental impact

Since ISO 50001 was first published in 2011, many other related standards have been developed to complete ISO’s energy management and energy savings portfolio. Most relevant for all organizations wanting to have their energy management system certified is ISO 50003:2014, which stipulates the requirements for bodies providing audit and certification of energy management systems, in addition to ISO 17021:2011.

Time of Transition

In accordance with the “Instructions for Transition to ISO 50003:2014”, all certification bodies under DAkkS are required to implement the new accreditation basis by 14 October 2017. As soon as the new requirements of ISO 50003:2014 have been adopted, all initial and re-certifications shall take place based on these new accreditation rules.

Beginning with the successful transition to the accreditation according to ISO 50003:2014, all initial and re-certifications will be carried out based on this standard. Existing offers and audit schedules based on the old regulations may need to be adapted. Ongoing procedures for which surveillance audits are planned in 2017 are not affected. The same is true for initial certifications scheduled to be conducted prior to the transition in accordance with the currently valid rules of the Deutsche Akkreditierungsstelle GmbH (DAkkS). After 13 October 2020, all certifications that have not been transitioned to the new procedure according to ISO 50003 will no longer be valid.

Content Changes

The calculation of audit duration is changing and will then be based on the following factors (see ISO 50003:2014, clause 5.3):

  • Number of energy sources
  • Number of significant energy uses
  • Annual energy consumption
  • Number of personnel assigned to tasks relevant for the energy management system

There are also additions regarding the conduct of site sampling procedures, and a new requirement to document the CIP of energy-related performance during initial and re-certification audits.

The Main Content Changes In Detail

Information required for the calculation of audit duration

To calculate audit days, the number of energy sources and the level of energy consumption must be identified. Furthermore, the number of all employees is required who have: significant impact on the EnMS and/or the improvement of the energy performance, or whose activities contribute to implementation of the EnMS.

In addition, SEU (significant energy uses) must be determined, that is those energy uses with a significant share in the energy consumption and/or with significant potential for improving the energetic performance. In this context, methods and criteria for the identification of SEU must be evaluated. It may be advantageous to summarize processes or systems.

Applicability of Sampling

Annex B of ISO 50003:2014 explains and describes the requirements and procedures for sampling in detail. If sample procedures are used to audit a management system according to ISO 50001, the specific requirements placed on the energy management system must be considered equally with the demands regarding energy performance (e. g. consistent criteria for determining and adapting the baseline, relevant variables and energy performance indicators (EnPIs).

Audit evidence for continual improvement

Audit evidence for continual improvement of energy performance regarding energy efficiency, energy input or energy use compared to the energetic baseline shall be generated by measurable results. What matters are transparency, plausibility and verifiability.

ISO 50006 and ISO 50015 may help to determine and evaluate the energetic baseline and energy performance indicators. Among other things, they offer starting points for determining a suitable reference period to define the energetic baseline, as well as types of indicators and their use.