The traditional microgrid electricity transaction mode has such problems as centralization and data transparency, and because of the features like decentralized, tamperability, traceability and untrusted characteristics of the Blockchain is widely used in electricity transaction. Current research focuses on consensus mechanism, trading mechanisms and privacy protection, and most of them require traders to make constant bidding every cycle. This paper presents a consortium Blockchain without bidding electricity trading mechanism based on the consensus of proof of authority (PoA), electricity consumers do not need to bid the pre-deposit of electricity, can automatically trade electricity based on smart contracts before the electricity bill runs out, the settlement of funds using energy tokens. Finally, the comparison and analysis of the other 4 existing Blockchain electricity trading schemes, and the simulation of 5 producers and 5 consumers of electricity transactions, analysis of the buyer’s and and seller’s earnings. The results show that the scheme benefits both buyers and sellers at the same time, with lower economic costs and high consensus efficiency.