ZGridBC: Zero-Knowledge Proof Based Scalable and Privacy-Enhanced Blockchain Platform for Electricity Tracking

【Author】 Miyamae, Takeshi; Kozakura, Fumihiko; Nakamura, Makoto; Morinaga, Masanobu

【Source】IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS

【影响因子】0.695

【Abstract】The total number of solar power-producing facilities whose Feed-in Tariff (FIT) Program-based ten-year contracts will expire by 2023 is expected to reach approximately 1.65 million in Japan. If the facilities that produce or consume renewable energy would increase to reach a large number, e.g., two million, blockchain would not be capable of processing all the transactions. In this work, we propose a blockchain-based electricity-tracking platform for renewable energy, called 'ZGridBC,' which consists of mutually cooperative two novel decentralized schemes to solve scalability, storage cost, and privacy issues at the same time. One is the electricity production resource management, which is an efficient data management scheme that manages electricity production resources (EPRs) on the blockchain by using UTXO tokens extended to two-dimension (pe-riod and electricity amount) to prevent double-spending. The other is the electricity-tracking proof, which is a massive data aggregation scheme that significantly reduces the amount of data managed on the blockchain by using zero-knowledge proof (ZKP). Thereafter, we illustrate the architec-ture of ZGridBC, consider its scalability, security, and privacy, and illus-trate the implementation of ZGridBC. Finally, we evaluate the scalability of ZGridBC, which handles two million electricity facilities with far less cost per environmental value compared with the price of the environmental value proposed by METI (= 0.3 yen/kWh).

【Keywords】blockchain; electricity tracking; scalability; storage cost; pri-vacy; zero-knowledge proof

【发表时间】2023 JUL

【收录时间】2023-07-31

【文献类型】实验仿真

【主题类别】

区块链应用-实体经济-电力领域