ISO 50001

Certification ISO 50001

TÜV NORD Czech, s.r.o. is ready to certify the energy management system according to the ISO 50001 standard on the basis of the latest accreditation granted by the Czech Institute for Accreditation according to the accreditation standards ISO/IEC 17021-1 and ISO 50003, respectively, or also according to the accreditation of our parent company in Germany (DAkkS). We are ready to provide this certification through Czech-speaking auditors.

By implementing an energy management system, companies reduce the energy intensity of production and improve energy efficiency. For large enterprises, it is also one of the ways to meet the requirements of Act No. 406/2000 Coll., on energy management as amended, specifically §9 paragraph 2.

Certification takes place in two stages. In Stage 1, the documentation and overall readiness of the organisation's system in place for certification is assessed, while in Stage 2 the fulfilment of all the requirements of ISO 50001 in practice is verified.

Upon completion of the certification audit, a separate certificate is issued confirming the organisation's compliance with the requirements of the standard and its applicable mandatory obligations. The audit can be organised separately or as an integrated audit with audits of other management systems.

The International Organization for Standardization (ISO) is preparing to issue a revision of ISO 50001 in late 2018 or early 2019. The content of the revision will already follow the so-called High Level Structure, according to which revisions to both ISO 9001 and ISO 14001 were also issued in 2015. It can be assumed that on the date of the publication of this standard, a three-year transition period will come into effect, when accreditation bodies will start issuing accreditations to certification bodies for certification according to the revision. After this three-year period, the validity of certificates according to ISO 50001:2011 will be terminated.



The accreditation of TÜV NORD CERT GmbH (TNC) was converted to the international accreditation standard ISO 50003:2022 on 2 August 2023.

We would like to inform you about the successful transition of our accreditation for the certification of energy management systems (EnMS) by the German Accreditation Body (DAkkS).

The accreditation for EnMS certification, issued by the Czech Institute for Accreditation (CIA) to the certification body TÜV NORD Czech s.r.o. (TNCz), includes the criterion accreditation standard ISO 50003:2022 as of 31 May 2023. This certification scheme follows the same rules as the TNC scheme under DAkkS accreditation.

The transition to certification under the new accreditation scheme will result in changes regarding the calculation of audit duration, as well as the conduct of audits and audit documentation.
Certificates and any sub-certificates will not change as a result of the transition.

For existing customers, the new audit duration calculation requirements apply only to the next certification cycle. In contrast, the changes regarding the audit process and audit documentation management apply immediately, i.e. they will be implemented at the next regular audit of the current certification cycle.

For new customers, all the requirements of ISO 50003:2022 apply with immediate effect, i.e. the new calculation requirements and changes related to audit conduct and audit documentation.

The main changes from the previous edition are as follows:

Changes to audit duration calculations
The following should now be taken into account when calculating audit time:
- Weighted values for complexity (calculation),
- Pareto analysis for determining energy types (customer questionnaire),
- external energies using unstaffed systems and locations (customer questionnaire).

Audit planning and audit documentation
- The audit should include an examination of a sample of primary data sources (e.g. energy bills).
- The time allocation for reviewing primary data sources must be documented in the audit plan.
- Energy consumption for each energy source and must be reported in the audit report.

Audit duration
- A minimum of 80% of the calculated audit time shall be spent on site (previously 70%).
- A maximum of 20% of the calculated audit time will be spent on audit preparation and follow-up.

Continuous improvement of energy performance
- During surveillance audits, the audit team shall review the measures taken by the organisation to improve the energy performance of the organisation; demonstration of energy performance improvement is not required for surveillance audits.
- During recertification audits, the audit team must determine whether the organisation has demonstrated continuous improvement in energy performance based on the Energy Performance Indicators (EnPIs).

Multi-site organisations
- Multiple sites can be considered as one site if they are close together. Thus, the number of efficient EnMS staff, energy types and consumption, and the number of VUEs can be added together.

If you have any questions, please do not hesitate to contact our colleague:

Mgr. Viktor Šaroch, Ph.D. +420 602 664 895, e-mail:

Please, do not hesitate to contact us for further information

TÜV NORD Czech, s.r.o.
Českomoravská 2420/15
CZ - 190 00 PRAHA 9

Tel.: +420 296 587 201-9
Fax: +420 296 587 240