An Energy Management System (EnMS) is a framework for managing energy consumption by energy consumers, such as industrial, commercial, and public-sector organizations. It assists businesses in identifying and improving energy-saving technology, particularly those that may not require a large upfront expenditure. In most circumstances, implementing an EnMS successfully necessitates specialized knowledge and personnel training.

An energy management system, according to the International Organization for Standardization (ISO), entails defining and implementing an energy strategy, setting attainable energy use targets, and designing action plans to achieve them and track progress. Implementing new energy-efficient technology, decreasing energy waste, or enhancing current processes to reduce energy expenses are all possibilities. The Energy Management System helps organizations of all sizes to sustainably manage their energy use.