​​​To harmonise and implement standardised electronic data interchange, since 2009 ENTSO-E has supported the integration, at an international level, of Member TSOs’ business requirements and use cases into the Common Information Model (CIM), and contributions to its further development. For market-related exchanges, this has been achieved through ENTSO-E’s liaison with the International Electrotechnical Commission Technical Committee 57 and Working Group 16 (IEC TC 57 / WG 16).

The IEC TC 57 (Power System Management and Associated Information Exchange) is currently developing the IEC CIM 62325 series of standards for the exchange of data required by deregulated energy markets. WG 16 (Deregulated Energy Markets) is developing these standards as a framework for energy market communications encompassing two market styles: European style and North American style markets.

The IEC 62325 Series of Standards

The foundation of the IEC 62325 series, are the:

• IEC 62325-301 “CIM extensions for markets” standard, which is an abstract model that caters for the introduction of the objects required for the operation of electricity markets; and
• IEC 62325-450 “Profile and context modelling rules,” the International Standard for the generation of profiles.

Based on these two standards, the IEC 62325-351 “CIM European market model exchange profile” International Standard, and the IEC 62325-451-‘X’ set of standards, which are built on this CIM profile, are being maintained and further developed, notably for Europe’s internal electricity market (IEM).

The European style market profile (ESMP), as defined in IEC 62325-351, provides the core components for use in the IEC 62325-451-‘X’ standards, which target specific core business processes within Europe’s internal electricity market, such as scheduling, settlement, capacity allocation and nomination, acknowledgement, etc.

In detail, the IEC CIM 62325 series of standards currently consists of:

International Standards

• IEC 62325-301: Framework for energy market communications – Common information model (CIM) Extensions for markets.
• IEC 62325-450: Profile and context modelling rules.
• IEC 62325-351: Framework for energy market communications – CIM European market model exchange profile.
• IEC 62325-451-1: Framework for energy market communications – Acknowledgement business process and contextual model for CIM European market.
• IEC 62325-451-2: Framework for energy market communications – Scheduling business process and contextual model for European market.
• IEC 62325-451-3: Framework for energy market communications – Transmission capacity allocation business process (explicit or implicit auction) and contextual models for European market.
• IEC 62325-451-4: Framework for energy market communications – Settlement and reconciliation business process, contextual and assembly models for European market.
• IEC 62325-451-5: Framework for energy market communications – Problem statement and status request business processes, contextual and assembly models for European market.
• IEC 62325-451-6: Framework for energy market communications – Publication of information on market, contextual and assembly models for European market.

Technical Specifications

• IEC 62325-503: Framework for energy market communications – Market data exchanges guidelines for the IEC 62325-351 profile.
• IEC 62325-504: Framework for energy market communications – Utilization of web services for electronic data interchanges on the European energy market for electricity​

Coming Standards

Coming Technical Specifications

•  N/a

For further information on the CIM for energy market and ENTSO-E’s related activities, please contact Olivier Aine, Standardisation & Interoperability Advisor.

Related links:

• ENTSO-E Electronic Data Interchange - Overview
• ENTSO-E Electronic Data Interchange work products - EDI Library
• IEC TC 57 WG 16 Deregulated Energy Market Communications