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The central focus of this research is the MakoMaker Space, a demonstrator project that employs the Connector from the Eclipse Data Space Components. The MakoMaker project demonstrates the successful automation of energy supplier changes, emphasizing the preservation of customer data sovereignty. It shows an alternative approach to the process, putting the customer into the center. Customers retain control of their data, which is accessible to providers as needed. While the paper discusses the potential for further enhancements, such as the integration of an identity provider and the development of a sustainable business model for service coordination, the primary focus is on the demonstrator\u2019s successful application in a pilot setting.<\/jats:p>","DOI":"10.1186\/s42162-024-00315-5","type":"journal-article","created":{"date-parts":[[2024,2,22]],"date-time":"2024-02-22T12:02:13Z","timestamp":1708603333000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Exploring decentralized data management: a case study of changing energy suppliers in Germany"],"prefix":"10.1186","volume":"7","author":[{"given":"Linda","family":"R\u00fclicke","sequence":"first","affiliation":[]},{"given":"Florian","family":"Fehrle","sequence":"additional","affiliation":[]},{"given":"Arne","family":"Martin","sequence":"additional","affiliation":[]},{"given":"Antonello","family":"Monti","sequence":"additional","affiliation":[]},{"given":"Volker","family":"Berkhout","sequence":"additional","affiliation":[]},{"given":"Oliver","family":"Warweg","sequence":"additional","affiliation":[]},{"given":"Sven","family":"M\u00f6ller","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2024,2,22]]},"reference":[{"key":"315_CR1","doi-asserted-by":"publisher","first-page":"7018","DOI":"10.3390\/en14217018","volume":"14","author":"S Aslam","year":"2021","unstructured":"Aslam S, Bukovszki V, Mrissa M (2021) Decentralized data management privacy-aware framework for positive energy districts. 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