Energy Management Systems

Using energy efficiently helps organizations save money, conserve resources, and tackle climate change. ISO 50001 supports organizations to use energy more efficiently through the development of an Energy Management System (EnMS).

The new ISO 50001:2018 edition, Energy management systems – Requirements with guidance for use, provides a framework of requirements to:

  • develop a policy for more efficient use of energy;
  • fix targets and objectives to meet the policy;
  • use data to better understand and make decisions about energy use;
  • measure the results;
  • review how well the policy works;
  • and continually improve energy management.

ISO  50001:2018

ISO 50001:2018 specifies requirements to establish, implement, maintain, and improve an energy management system. The intended outcome is to enable an organization to use a systematic approach for continual improvement of energy performance and the EnMS.

This standard:

a) is applicable to any organization regardless of its type, size, complexity, geographical location, organizational culture or the products and services it provides;
b) is applicable to activities affecting energy performance that are managed and controlled by the organization;
c) is applicable irrespective of the quantity, use, or types of energy consumed;
d) requires demonstration of continual energy performance improvement, but does not define levels of energy performance improvement to be achieved;
e) can be used independently or be aligned or integrated with other management systems.

Annex A provides guidance for the use of this document. Annex B provides a comparison of this edition with the previous edition.

You can order ISO 50001:2018 at this ISO web page.

Main Changes

The main changes in ISO 50001:2018 compared to the previous edition are:

  • adoption of ISO’s requirements for management system standards, including a high-level structure, identical core text, and common terms and definitions;
  • better integration with strategic management processes;
  • clarification of language and document structure;
  • stronger emphasis on the role of top management;
    inclusion of new definitions, including energy performance improvement;
  • clarification on exclusions of energy types;
  • clarification of “energy review”;
  • introduction of the concept of normalization of energy performance indicators and associated energy baselines;
  • addition of details on the energy data collection plan and related requirements (previously energy measurement plan);
  • clarification of text related to energy performance indicators and energy baselines in order to provide a better understanding of these concepts.

Table of Contents

1 Scope
2 Normative references

3 Terms and definitions
3.1 Terms related to organization
3.2 Terms related to management system
3.3 Terms related to requirement
3.4 Terms related to performance
3.5 Terms related to energy

4 Context of the organization
4.1 Understanding the organization and its context
4.2 Understanding the needs and expectations of interested parties
4.3 Determining the scope of the energy management system
4.4 Energy management system

5 Leadership
5.1 Leadership and commitment
5.2 Energy policy
5.3 Organization roles, responsibilities and authorities

6 Planning
6.1 Actions to address risks and opportunities
6.2 Objectives, energy targets and planning to achieve them
6.3 Energy review
6.4 Energy performance indicators
6.5 Energy baseline
6.6 Planning for collection of energy data

7 Support
7.1 Resources
7.2 Competence
7.3 Awareness
7.4 Communication
7.5 Documented information

8 Operation
8.1 Operational planning and control
8.2 Design
8.3 Procurement

9 Performance evaluation
9.1 Monitoring, measurement, analysis and evaluation of energy performance and the EnMS
9.2 Internal audit
9.3 Management review

10 Improvement
10.1 Nonconformity and corrective action
10.2 Continual improvement

Annex A: Guidance for use
A.1 General
A.2 Relationship between energy performance and the EnMS
A.3 Clarification of terminology
A.4 Context of the organization
A.5 Leadership
A.6 Planning
A.7 Support
A.8 Operation
A.9 Performance evaluation
A.10 Improvement

Annex B:
Correspondence between ISO 50001:2011 and ISO 50001:2018
Alphabetical list of terms