## Providing Privacy, Safety, and Security in IoT-Based Transactive Energy Systems using Distributed Ledgers

 Title Providing Privacy, Safety, and Security in IoT-Based Transactive Energy Systems using Distributed Ledgers Publication Type Conference Paper Year of Publication 2017 Authors Laszka, A., A. Dubey, M. Walker, and D. C. Schmidt Refereed Designation Refereed Conference Name The 7th International Conference on the Internet of Things (IoT 2017) Date Published 10/2017 Publisher ACM Conference Location Linz, Austria Abstract Power grids are undergoing major changes due to rapid growth in renewable energy resources and improvements in battery technology. While these changes enhance sustainability and efficiency, they also create significant management challenges as the complexity of power systems increases. To tackle these challenges, decentralized Internet-of-Things (IoT) solutions are emerging, which arrange local communities into transactive microgrids. Within a transactive microgrid, prosumers'' (i.e., consumers with energy generation and storage capabilities) can trade energy with each other, thereby smoothing the load on the main grid using local supply. It is hard, however, to provide security, safety, and privacy in a decentralized and transactive energy system. On the one hand, prosumers' personal information must be protected from their trade partners and the system operator. On the other hand, the system must be protected from careless or malicious trading, which could destabilize the entire grid. This paper describes \emph{Privacy-preserving Energy Transactions} (PETra), which is a secure and safe solution for transactive microgrids that enables consumers to trade energy without sacrificing their privacy. PETra builds on distributed ledgers, such as blockchains, and provides anonymity for communication, bidding, and trading.
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