DIN EN ISO 50001:2011-12

The general aim of this standard is to support organizations in establishing systems and processes necessary to improve their energy performance. By a systematic approach for establishment, implementation, maintenance and improvement of an energy management system, the organization shall be enabled to achieve continual improvement of the energy management performance, energy efficiency and energy savings.
The standard describes requirements regarding energy supply as well as energy use and consumption including measurement, documentation and reporting, design and procurement practices for equipment, systems, processes and personnel that contribute to energy performance. This document applies to all variables affecting energy performance that can be monitored and influenced by the organization.
This standard has been designed to be used independently, but it can be aligned or integrated with other management systems. This standard is applicable to any organization.
The International Standard has been prepared by ISO project committee ISO/PC 242 "Energy Management". The committee responsible for this standard is Working Committee NA 172-00-09 AA "Energieeffizienz und Energiemanagement" ("Energy efficiency and energy management") at the Environmental Protection Standards Committee (NAGUS).