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.
@article{arxiv.1905.07940,
title = {Privacy-Preserving P2P Energy Market on the Blockchain},
author = {Alain Brenzikofer and Noa Melchior},
journal= {arXiv preprint arXiv:1905.07940},
year = {2019}
}