Peer-to-Peer Electricity Trading Between Decentralized Operators on Blockchain
Sector: Secondary sector · Industry: Energy utilities · Organisation: Pfalzwerke AG · Maturity level: Pilot
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.
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.
Perspectives
B2B — organisations perspective
For energy suppliers and municipal utilities, the concept opens the possibility to act as platform operators in the local peer-to-peer electricity market and offer new digital services around decentralized energy generation. At the same time, existing business models must be reconsidered, as the role as central intermediary in electricity trading is fundamentally questioned by blockchain technology.
B2C — consumers perspective
For private individuals with their own electricity generation systems, the concept offers the prospect of selling surplus electricity directly and easily to neighbours, thus generating additional income. Consumers without their own system could obtain cheap, locally generated green electricity from the immediate vicinity and actively contribute to the local energy transition.
Employees perspective
Employees in billing and energy trading are affected by far-reaching changes, as Smart Contracts automate much of these activities. At the same time, new fields of activity arise in blockchain development, data management and regulatory support of such platforms.
Benefits
General
- 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
B2B — organisations
- 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
B2C — consumers
- 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
Employees
- Relief from repetitive manual billing tasks through automation
- New competence fields in blockchain technology and digital energy services emerge
Challenges
General
- 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
B2B — organisations
- Necessary coordination with the Federal Network Agency and adjustments to existing regulatory frameworks significantly increase implementation effort
B2C — consumers
- Private producers face legal hurdles as the current Energy Industry Act severely restricts the role as electricity supplier for private individuals
Employees
- 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.
Implementation examples
Research Concept Peer-to-Peer Electricity Trading in the Neighbourhood
Classic electricity trading via central energy suppliers as intermediaries is inefficient for locally generated renewable energy and prevents direct, cost-effective use in the neighbourhood. Pfalzwerke investigated whether blockchain technology can disintermediate and automate this process.
Pfalzwerke AG researched a business model for direct peer-to-peer electricity trading in the neighbourhood based on the Ethereum blockchain, where Smart Contracts automate billing between local producers and consumers. The technical feasibility of the concept was demonstrated with a central energy management system and intelligent metering systems as part of the research project involving Prof. Dr.-Ing. Coll-Mayor.
Pfalzwerke AG investigated in a research project how a local peer-to-peer electricity market based on the Ethereum blockchain could be realised in the neighbourhood. The concept envisages that private operators of photovoltaic, wind or biogas systems sell their surplus electricity directly to consumers in their neighbourhood, with all transactions transparently and immutably stored on the blockchain. Smart Contracts take over fully automatic billing of delivered kilowatt hours. The feasibility of this approach was demonstrated with a central energy management system and intelligent metering systems. However, regulatory coordination with the Federal Network Agency and resolution of standardisation and data issues are still required for practical operation.
The solution addresses the lack of direct trading opportunities between private producers and local consumers as well as the high manual effort in billing decentralized electricity quantities.
Tags
Peer-to-Peer Trading, Smart Contract, Ethereum, Renewable Energy, Decentralised Billing, Smart Meter, Energy Transition