This document provides an overview of the state of the art that is relevant for WP2 of the Miracle project; Data Specification. There are two subjects that form the main focus of this state of the art report; modeling approaches and existing models. Three modeling approaches are described; Unified Modeling Language (UML), UN/CEFACT's Modeling Methodology (UMM) and Object Role Modeling (ORM). For the existing models, two international standard organizations are relevant; ebiX and IEC. ebiX has developed models for Customer Switching Process and for the Exchange of Metered Data. These models describe the business processes and the corresponding message definitions and do so by using the aforementioned UN/CEFACT's Modeling Methodology. The Common Information Model (CIM) is a data model by the IEC that aims to describe all major objects that an electric utility enterprise is typically involved with.

The following conclusions are drawn:

• UMM is the methodology of choice for the development of the WP2 deliverables. It is an international standard that describes different viewpoints that help guide the process of modeling. The artifacts that are part of these viewpoints are UML based. UMM has also been adopted by ebiX which serves as a good example of the application of UMM for the energy area.

• The main subject of the Miracle project; shiftable consumption and/or production is not being covered by the existing models in the energy area. Therefore specific models will have to be developed in Miracle that are able to cope with these concepts.

• Part of the Common Information Model by the IEC provides a solid basis for the Miracle data model. Basic energy concepts that already have been modeled can be reused.

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Authors:
M.J. Konsman, F.J. Rumph, TNO