NATIONAL FOREWORD

This Indian Standard (First Revision) which is identical with ISO 50001 : 2018 ‘Energy management systems - Requirements with guidance for use’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Energy Management and Energy Savings Sectional Committee and approval of the Mechanical Engineering Division Council.

This standard was originally published in 2011 and was identical with ISO 50001 : 2011. The first revision of this standard has been undertaken to align it with the latest version of ISO 50001 : 2018.

The major changes in this revision are as follows:

a) Adoption of ISO’s requirements for management system standards, including a high level structure, identical core text, and common terms and definitions, to ensure a high level of compatibility with other management system standards.

b) Supporting integration with strategic management processes.

c) Clarification of language and organization.

d) Stronger emphasis on the role of top management.

e) Terms and definitions in Clause 3 updated and placed in context order.

f) Inclusion of new definitions including energy performance improvement.

g) Clarification on exclusions of energy types.

h) Clarification of energy review.

j) Normalization of energy performance indicators [EnPI(s)] and associated energy baselines [EnB(s)].

k) Addition of details on the energy data collection plan and related requirements (previously energy measurement plan).

m) Clarification of energy performance indicator (EnPI) and energy baseline (EnB) text to provide better understanding of these concepts.

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminologies and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.