Efficient privacy-preserving aggregation for demand side management of residential loads

Emilio J. Palacios-Garcia, Xavier Carpent, Joppe W. Bos and Geert Deconinck

Applied Energy, 2022, vol. 328, issue C, No S0306261922013691

Abstract: An effective tool used in practice to maintain network balance is residential demand side management (DMS). However, privacy concerns related to the processing of user personal consumption data often result in a slow wide-scale adoption and acceptance. Various general purpose cryptographic techniques are available, such as homomorphic encryption and secure multi-party computation (MPC), to address these privacy-concerns. Unfortunately, these come at a significant computation price which makes them not applicable in many practical scenarios. In this work, a privacy-preserving aggregation algorithm, based on additive random shares and a combination of well-established symmetric and asymmetric key cryptography methods is proposed and compared with additive homomorphic encryption (AHE) techniques and state-of-the-art MPC protocols. The results show that generic techniques such as homomorphic encryption come with significant computational and communication cost, especially at the users side. On the other hand, MPC approaches provide better performance and resilience to dropouts for very large networks but entail a complex communication among users. In this context, the proposed additive random shares algorithm was the most balanced choice for DSM, with a good performance, simpler information flow and the possibility of adding redundant intermediary parties for enhanced resilience.

Keywords: Consumer privacy; Secure aggregation; Demand side management; Energy flexibility (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1016/j.apenergy.2022.120112

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