# When Energy Trading meets Blockchain in Electrical Power System: The State of the Art

**Authors:** Naiyu Wang, Xiao Zhou, Xin Lu, Zhitao Guan, Longfei Wu, Xiaojiang Du, Mohsen Guizani  
**arXiv:** [1902.07233](https://arxiv.org/abs/1902.07233)  
**Date:** 2019-02-19  
**Summary page:** https://www.summarizepaper.com/en/paper/1902.07233v1/

## Key points

- Renewable energy sector shifting from centralized to distributed energy trading
- Blockchain technology widely adopted as a distributed public ledger for this transition
- Challenges associated with blockchain-based energy trading: low efficiency, high transaction costs, security and privacy issues
- Various solutions proposed to address these challenges
- Survey investigates use of blockchain in energy trading within electrical power systems
- Identifies challenges specific to blockchain-based energy trading
- Examines existing energy trading schemes categorized into three main focuses: energy transaction, consensus mechanism, system optimization
- Existing schemes can meet specific requirements but unresolved problems remain
- Discussion on issues and future directions for research and development provided in survey conclusion
- Authors of the study: Naiyu Wang, Xiao Zhou, Xin Lu, Zhitao Guan, Longfei Wu, Xiaojiang Du, Mohsen Guizani

## Summary

In the rapidly growing renewable energy sector, there has been a shift from centralized to distributed energy trading. To facilitate this transition, blockchain technology has been widely adopted as a distributed public ledger. However, there are several challenges associated with blockchain-based energy trading, including low efficiency, high transaction costs and security and privacy issues. In response to these challenges, various solutions have been proposed. This survey thoroughly investigates the use of blockchain in energy trading within electrical power systems. Firstly, it identifies the challenges specific to blockchain-based energy trading and then examines existing energy trading schemes and categorizes them into three main focuses: energy transaction, consensus mechanism and system optimization. Each category is presented in detail. While existing schemes can meet specific energy trading requirements, there are still many unresolved problems in this field. The survey concludes with a discussion on these issues and provides future directions for research and development. The authors of this study include Naiyu Wang, Xiao Zhou, Xin Lu, Zhitao Guan, Longfei Wu, Xiaojiang Du and Mohsen Guizani. Overall, this study provides valuable insights into the current state of blockchain-based energy trading and highlights areas for further improvement and innovation.