Certificate transaction of renewable energy excessive accommodation can help to meet the consumers’increasing demand for green electricity. The application of blockchain technology in the transaction can provide a reliable solution for the accurate tracking and verification of transactions and the security of data ledger. The application modes of blockchain in market participant identity authentication, certificate issuance and transaction on voucher chain are proposed. Trading platform based on blockchain is established, and the business demand are estimated. System performance optimization measures such as large ticket transaction and atomic contract are put forward. The feasibility of the system’s compressive capacity and performance optimization method are proved by the laboratory environment test. The research results provide strong support for the launch of the platform, and help to further open up the user side channel to access to green electricity.