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The structural transition in the energy market presents new challenges to companies and their supporting information systems. Technological progress, changes in regulations, as well as new market players and process changes result in larger numbers of information sources. New concepts are necessary to make the requirements management of specific information systems for the energy business efficient. For this purpose the development of a reference model catalog and its formalization is suggested. The contribution presents existing approaches and requirements for structuring information sources in the energy business. Based on this, components and formalization of the catalog as well as methods for its construction, use, and maintenance are described. The article is focused on the description and evaluation of these methods.

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