EVS-EN IEC 62746-4:2025

The IEC 62746 series describes the interface between Customer Energy Management Systems (CEMs) and the grid management systems including those within Distribution System Operators (DSOs) and Transmission System Operators (TSOs). Each CEMS is designed to control resources associated with a residential, commercial, or industrial facility with the potential for a hierarchy of energy management systems.
Initial focus is on demand response and support for demand side management; later developments are expected to include storage resources as well as grid support services from new demand-side resources. The interface may also be applied to many types of communications, for example among multiple aggregators, or among an aggregator and multiple customers.