The Harmonised Electricity Market Role Model (HEMRM) is a document developed and maintained by DSO Entity and ENTSO-E. The Harmonised Role Model describes a model identifying all the roles that can be played for given domains within the electricity market. The roles are of a logical nature, such as a balance responsible party. The roles act within a given domain, such as a metering grid area.

The document covers the roles as identified in current development being carried out in information exchange. A role model of this nature shall be the formal means of identifying roles and domains that are used in information interchange in the electricity market. It can therefore affect the way business processes are designed for automation. It ensures that the information exchanged between parties corresponds to a process managed within the electricity market between distinct roles that are assumed by specific parties.