ISO 50001 provides requirements for establishing an energy management system (EnMS) to improve energy performance. The EnMS standard is based on the Plan-Do-Check-Act cycle and incorporates energy management practices into organizational activities. Key elements of an EnMS include developing an energy policy, conducting energy planning to establish objectives and targets, implementing and operating the EnMS, monitoring performance, conducting management reviews, and continually improving the system. Certification to ISO 50001 can help organizations reduce energy costs, improve energy efficiency, and meet environmental and regulatory requirements.