Privacy-Preserving P2P Energy Market on the Blockchain
This addresses privacy concerns for prosumers in decentralized energy trading, though it is incremental as it builds on existing blockchain and privacy technologies.
The paper tackles the problem of privacy leakage in peer-to-peer energy markets by introducing two privacy-by-design concepts that prevent individual load profiles from being disclosed to third parties on a blockchain, resulting in a secure marketplace for locally generated solar power.
Quartierstrom creates a peer-to-peer marketplace for locally generated solar power. The marketplace is implemented as a smart contract on a permissioned blockchain governed by all prosumers. Two privacy-by-design concepts are presented which guarantee that the users individual load profile is not leaked to any third party despite using a blockchain. The first approach leverages UTXO based coin mixing protocols in combination with an account-based on-chain smart contract. The second approach relies on an off-chain smart contract running in trusted execution environments.