# Peer-to-Peer Electricity Trading Between Decentralized Operators on Blockchain

> Pfalzwerke AG researched a blockchain-based concept enabling direct electricity trading between private operators of photovoltaic, wind, or biogas plants and consumers within local neighborhoods. Transactions and billing for delivered kilowatt-hours are automatically recorded on an Ethereum blockchain and settled via smart contracts. The project was in the research and concept phase, with feasibility of the approach having been demonstrated.

**Sector:** Secondary sector · **Industry:** Energy utilities · **Organisation:** Pfalzwerke AG · **Maturity level:** Pilot

Canonical URL: https://www.sapientblock.com/en/use-cases/pfalzwerke-peer-to-peer-stromhandel-zwischen-dezentralen-betreibern-blockchain

## Documentation status

- **Project status:** Pilot
- **Evidence:** Evidence high
- **Editorial review:** Ufuk Avci, 12 July 2026

## Description

Peer-to-peer electricity trading based on blockchain enables owners of small electricity generation systems such as photovoltaics, wind or biogas to sell their surplus electricity directly to neighbours or other local consumers without needing a classic energy supplier as intermediary. The Ethereum blockchain transparently and immutably stores all transactions, while Smart Contracts fully automatically handle billing as soon as a certain amount of electricity has been delivered. Pfalzwerke AG investigated this concept as part of a research project and demonstrated the fundamental technical feasibility before regulatory and technical challenges for practical deployment need to be solved.

Pfalzwerke AG developed a business model for peer-to-peer electricity trading in the neighbourhood based on the Ethereum blockchain as part of a research project involving Prof. Dr.-Ing. Coll-Mayor. The core of the concept is that private operators of photovoltaic, wind or biogas systems can sell their generated electricity directly and without detour via the classic energy market to local consumers in their neighbourhood. All transactions are transparently recorded on the Ethereum blockchain, and Smart Contracts take over the automated billing of delivered kilowatt hours. Prerequisites for operation are a central energy management system and intelligent metering systems, with which the feasibility of the concept has already been demonstrated. However, for practical implementation, open questions around standardisation of data formats, redefinition of processes and responsibilities as well as regulatory coordination with the Federal Network Agency and the requirements of the Energy Industry Act must still be resolved.

## Benefits

- Opportunity for energy suppliers to position themselves as innovative platform operators for decentralized energy markets
- Automation of billing processes through Smart Contracts reduces operational effort
- Direct sale of surplus electricity to neighbours enables additional income for private producers
- Access to locally generated, affordable green electricity for consumers in the neighbourhood
- Direct marketing of locally generated electricity without classic intermediaries through automated Smart Contracts
- Transparent and tamper-proof recording of all trading transactions on the Ethereum blockchain
- Potentially higher self-sufficiency in the neighbourhood through more efficient use of locally generated renewable energy
- Relief from repetitive manual billing tasks through automation
- New competence fields in blockchain technology and digital energy services emerge

## Challenges

- Necessary coordination with the Federal Network Agency and adjustments to existing regulatory frameworks significantly increase implementation effort
- Private producers face legal hurdles as the current Energy Industry Act severely restricts the role as electricity supplier for private individuals
- Lack of standardisation of data formats and necessary redefinition of processes and responsibilities hinder practical implementation
- Regulatory hurdles in the German Energy Industry Act make it difficult for private producers to act as electricity suppliers under the EnWG
- Technical challenges regarding scalability, transaction speed and interoperability of the blockchain solution must be solved
- Employees must build extensive new skills in blockchain and digital energy platforms

## Technology foundation

The concept is based on the Ethereum blockchain, which is particularly suitable due to its Smart Contract capability: billings can be executed rule-based and fully automatically without intermediaries. Additionally, a central energy management system and intelligent metering systems (Smart Meters) are necessary to capture generation and consumption in real time and map them on the blockchain.

## Sources

- [Pfalzwerke – Blockchain im Energiebereich](https://www.pfalzwerke.de/blockchain_a86786)
- [Pfalzwerke – Technologie und Innovation: Blockchain](https://www.pfalzwerke.de/pfalzwerke-gruppe/technologie-innovation/blockchain)
- [Blockchain in der Energiewirtschaft: Risiko oder Chance für Stadtwerke?](https://www.osborneclarke.com/de/insights/blockchain-der-energiewirtschaft-risiko-oder-chance-fuer-stadtwerke)
- [SINTEG-Blaupause: Lokaler Peer-to-Peer-Stromhandel mittels Blockchain](https://www.bundeswirtschaftsministerium.de/Redaktion/DE/Dossier/Sinteg/3-1-blaupause.pdf?__blob=publicationFile&v=1)