1. Introduction

Peer-to-peer (P2P) electricity trading is a model in which electricity consumers, prosumers (consumers who also generate electricity), and sometimes storage operators trade electricity directly with one another, usually through a digital platform. A household with rooftop solar, for example, may sell surplus electricity to a neighbouring household rather than selling all of it to a conventional distribution utility.

P2P trading can use smart meters, automated contracts, blockchain or other distributed-ledger technologies, artificial intelligence, and digital platforms. Legally, however, the concept creates an important question: when two private parties trade electricity, are they merely entering into a private contract, or are they performing an activity that remains subject to electricity-market regulation?

The answer is generally that P2P trading does not eliminate the regulatory character of electricity supply. Electricity remains a technically interconnected and safety-critical commodity, and transactions must operate within rules concerning licensing, distribution networks, metering, consumer protection, taxation, market access, balancing, data protection and system security.

EU electricity law expressly seeks to empower consumers and facilitate aggregation of distributed demand and supply, but the Court of Justice has also recognised that electricity markets remain subject to national institutional arrangements and market-operator rules. (EUR-Lex)

2. Meaning and Legal Structure of P2P Electricity Trading

A typical P2P arrangement contains:

Producer/prosumer – generates electricity, usually through solar PV or another distributed source.

Consumer – purchases electricity.

Digital platform – matches buyers and sellers.

Distribution System Operator (DSO) – physically transports electricity.

Metering system – measures generation, consumption and flows.

Market/regulatory authority – supervises compliance.

Settlement mechanism – calculates payments, network charges, taxes and other amounts.

The principal legal difficulty is that the contractual flow of electricity and the physical flow of electricity are not necessarily identical. Two neighbours may contract with each other digitally, but the actual electrons travel through a regulated distribution network.

Consequently, a P2P platform cannot necessarily claim that it is outside electricity law merely because it does not own generation assets or physical wires.

3. Major Legal Challenges

A. Licensing and the Legal Status of P2P Platforms

One of the first challenges is determining whether a P2P platform requires an electricity-supply, trading, aggregation or other licence.

Traditional electricity legislation generally distinguishes between:

generation;

transmission;

distribution;

supply;

trading; and

system operation.

P2P platforms do not fit neatly into these traditional categories.

A platform might argue that it merely provides software and that the actual electricity transactions are between users. Regulators may instead consider the platform to be performing a regulated electricity-market function.

This creates a regulatory classification problem.

Indian context

Under the Electricity Act 2003, activities such as transmission, distribution and trading are subject to statutory regulation. The development of P2P electricity trading therefore raises questions about whether a digital intermediary is effectively engaging in electricity trading or supplying electricity.

A future P2P framework in India would need to define:

P2P seller;

P2P buyer;

aggregator;

platform operator;

electricity trader;

prosumer;

community energy entity; and

DSO interface.

Without such definitions, enforcement and licensing can become uncertain.

B. Monopoly and Exclusive Rights Over Electricity Networks

Electricity distribution networks are generally regulated natural monopolies. Even where customers are permitted to choose suppliers, they normally cannot bypass the physical distribution infrastructure.

P2P trading therefore creates a distinction between commercial decentralisation and physical network decentralisation.

A P2P transaction may involve:

Seller → digital platform → buyer

but physically:

Seller → distribution grid → buyer.

The DSO therefore remains relevant.

The Court of Justice addressed related questions concerning electricity-market intermediation in Bursa Română de Mărfuri SA v ANRE, Case C-394/21 (2023). The Court held that EU electricity-market rules did not automatically prohibit a pre-existing national legal monopoly over certain electricity-market intermediation services. (EUR-Lex)

This is relevant to P2P systems because technological decentralisation does not automatically displace legally established market institutions.

4. Network Access and Wheeling Charges

A P2P seller and buyer may be geographically close, but their electricity transaction can still use the public distribution network.

This raises questions concerning:

network-use charges;

wheeling charges;

system losses;

congestion charges;

balancing charges;

connection fees; and

cross-subsidies.

If P2P consumers avoid charges that ordinary consumers must pay, the system may create unequal treatment between consumers.

Conversely, excessively high network charges may make P2P trading economically unattractive.

The legal challenge is therefore to create a tariff structure that recognises that the network remains an essential shared infrastructure even when energy transactions become decentralised.

5. Consumer Protection

P2P electricity trading can transform ordinary electricity consumers into market participants.

That creates several consumer-law questions:

Who is responsible when electricity is not delivered?

Who compensates the consumer after a platform failure?

What happens if the seller produces less electricity than promised?

Can consumers withdraw from a transaction?

Who handles complaints?

Who is liable for incorrect billing?

What information must be disclosed before contracting?

Traditional electricity suppliers are normally subject to detailed consumer-protection obligations.

A P2P platform consisting of thousands of private sellers creates a more complicated situation.

The law must determine whether a household selling surplus electricity should be treated as:

an ordinary consumer;

a commercial seller;

a small-scale generator; or

a regulated electricity supplier.

6. Contractual Liability

P2P trading depends heavily on automated contracts.

A transaction could specify:

quantity of electricity;

price per kWh;

delivery period;

renewable-energy characteristics;

balancing responsibility;

payment conditions;

penalties; and

dispute-resolution mechanisms.

But electricity generation is uncertain. Solar generation, for example, depends on weather.

Therefore, a seller may contract to supply 10 kWh but generate only 7 kWh.

The legal system must determine whether this constitutes:

breach of contract;

force majeure;

a balancing obligation;

platform liability; or

an automatically settled deviation.

This becomes particularly important when smart contracts are used.

7. Smart Contracts and Blockchain

Blockchain can theoretically allow electricity transactions to be recorded automatically and transparently.

However, blockchain does not eliminate ordinary contract-law principles.

Important questions include:

Contract formation

When exactly is the contract formed?

Error

What happens if an algorithm accepts an erroneous bid?

Immutability

How can an incorrect transaction be corrected if blockchain records are difficult to alter?

Jurisdiction

Which country's law applies to a cross-border digital transaction?

Liability

Who is responsible for defective code?

Automated execution

Can a smart contract automatically enforce a transaction even when the underlying transaction violates electricity regulations?

Thus, code cannot automatically replace legal compliance.

8. Metering and Verification

P2P trading requires accurate measurement.

A legal framework must establish:

approved smart meters;

meter ownership;

calibration standards;

time intervals for measurement;

data accuracy;

access to meter data;

dispute procedures; and

responsibility for meter failure.

This becomes particularly important where electricity prices vary every few minutes.

If a meter records incorrect generation or consumption, it can affect:

payment;

network charges;

taxes;

renewable-energy certificates;

balancing obligations.

Consequently, metering becomes a legal as well as a technical issue.

9. Data Protection and Privacy

P2P systems generate extremely detailed electricity-consumption data.

A smart meter can potentially reveal:

when occupants are at home;

appliance usage patterns;

working schedules;

periods of absence;

energy-consumption behaviour.

Therefore, P2P platforms must comply with applicable data-protection legislation.

The legal framework should address:

data ownership;

consent;

lawful processing;

data minimisation;

cybersecurity;

third-party access;

retention periods; and

cross-border data transfers.

The challenge is to balance market transparency with consumer privacy.

10. Cybersecurity and Platform Liability

P2P electricity trading creates a new attack surface.

A cyberattack could manipulate:

bids;

prices;

smart meters;

automated contracts;

payment accounts;

distributed energy resources; or

demand-response signals.

The legal question becomes:

Who bears liability when a cyberattack causes physical or financial damage?

Possible responsible parties include:

the platform;

software developer;

DSO;

meter operator;

prosumer;

aggregator; or

cybersecurity service provider.

A modern P2P framework therefore requires mandatory cybersecurity standards and clear allocation of liability.

11. Balancing Responsibility

Electricity supply and demand must remain balanced in real time.

Suppose 10 households sell solar electricity through a P2P platform. Cloud cover suddenly reduces production. The platform has promised buyers a certain quantity of electricity.

Who supplies the missing electricity?

Possible answers include:

the conventional electricity supplier;

an aggregator;

the DSO;

a balancing market;

battery storage; or

the P2P platform.

This is one of the most important legal problems because a contractual P2P market cannot operate independently of the physical requirement for system balancing.

EU electricity-market law expressly recognises balancing, demand response, storage and aggregation as components of modern electricity markets. (EUR-Lex)

12. Grid Stability and System Operator Authority

Large-scale P2P participation could produce unpredictable local electricity flows.

For example, a neighbourhood could simultaneously:

generate large quantities of solar electricity;

export electricity to the network;

charge batteries;

operate electric vehicles; and

respond automatically to price signals.

This could create local congestion or voltage problems.

The DSO therefore needs legal authority to:

restrict transactions;

curtail generation;

manage congestion;

disconnect unsafe installations;

obtain necessary operational data; and

intervene during emergencies.

The difficult question is how to reconcile these powers with the contractual autonomy of P2P participants.

13. Market Power and Competition

P2P trading is often presented as inherently decentralised. In practice, however, a platform could become highly concentrated.

A dominant platform might control:

transaction data;

customer access;

pricing algorithms;

settlement;

network information; and

market liquidity.

This creates potential competition-law problems.

The legal framework should therefore address:

discriminatory platform access;

algorithmic price manipulation;

exclusion of competing platforms;

preferential treatment;

abuse of dominant position; and

interoperability.

The Bursa Română de Mărfuri judgment demonstrates that electricity-market competition must be understood together with the specific institutional structure established by electricity legislation. (EUR-Lex)

14. Pricing and Tariff Regulation

A central attraction of P2P trading is the possibility of negotiated prices.

However, electricity pricing is not simply a private contractual matter.

The final price may include:

Energy price + network charges + taxes + levies + balancing costs + system charges.

Therefore, a P2P platform must clarify whether the displayed price represents:

only the energy component; or

the consumer's complete electricity cost.

EU law emphasises market-based price formation, while electricity-market regulation also preserves rules necessary for market functioning and consumer protection. (EUR-Lex)

15. Renewable-Energy Certificates and Environmental Claims

P2P platforms frequently promote local renewable-energy trading.

This creates another legal problem: how is the renewable character of electricity verified?

For example, if a household sells solar electricity, can the buyer separately claim:

renewable-energy consumption;

a renewable certificate;

emissions reductions; or

a carbon benefit?

The same unit of renewable electricity should not generate multiple environmental claims.

A regulatory system therefore requires credible:

measurement;

tracking;

certification; and

retirement of environmental attributes.

16. Taxation

P2P electricity sales also raise taxation issues.

If a household sells electricity regularly, the law must determine:

whether the income is taxable;

whether GST/VAT applies;

whether the seller is carrying on a business;

whether platform fees are taxable;

how transactions are recorded; and

whether electricity taxes apply.

Small prosumers require proportionate rules because imposing full commercial compliance obligations on every household could discourage participation.

17. Case Law Relevant to P2P Electricity Trading

There is limited reported judicial case law directly concerning pure household-to-household P2P electricity trading. Therefore, legal analysis generally relies on cases concerning electricity-market access, trading, network regulation and consumer/market rights.

1. Bursa Română de Mărfuri SA v ANRE, Case C-394/21 (CJEU, 2023)

This is particularly relevant to the legal architecture of electricity trading.

The Court considered whether EU electricity-market legislation prevented Romania from maintaining a national legal monopoly for certain electricity-market intermediation services. It concluded that EU law did not automatically prohibit such a pre-existing monopoly under the conditions specified by EU legislation. (EUR-Lex)

Relevance to P2P:
A digital P2P platform cannot assume that technological innovation automatically gives it unrestricted access to electricity trading markets. National market-operator and licensing structures remain legally relevant.

2. Hidroelectrica SA v ANRE, Case C-648/18 (CJEU, 2020)

The case concerned Romanian rules requiring certain electricity transactions to be conducted through designated operators. The CJEU considered the relationship between national electricity-market rules and EU principles concerning the free movement of electricity. (EUR-Lex)

Relevance to P2P:
The case illustrates the tension between national regulation of electricity trading and broader principles of electricity-market liberalisation.

3. Swissgrid AG v European Union Agency for the Cooperation of Energy Regulators (ACER)

Recent EU litigation concerning participation in European electricity-balancing platforms demonstrates that participation in electricity-market mechanisms can depend upon the legal status and regulatory position of the participant. The General Court's 2025 judgment concerned Swissgrid's participation in European balancing arrangements. (EUR-Lex)

Relevance to P2P:
P2P platforms that participate indirectly in balancing markets must comply with institutional eligibility and market-access requirements rather than relying solely on private contractual arrangements.

4. Secab Soc. coop. v ARERA and GSE, Case C-423/23

The CJEU addressed electricity-market regulation, renewable generation and national intervention in electricity-market revenues. The judgment illustrates that renewable electricity markets remain subject to regulatory intervention even where generation is privately operated. (EUR-Lex)

Relevance to P2P:
The renewable character of P2P electricity does not by itself remove transactions from market regulation.

18. Indian Legal Perspective

For India, P2P electricity trading has to be considered against the framework of the Electricity Act 2003, rules and regulations concerning distributed generation, open access, electricity trading, rooftop solar, metering, consumer protection and State Electricity Regulatory Commissions.

The major legal questions would include:

A. Whether P2P sellers require a licence

A statutory distinction would be needed between occasional surplus sales by prosumers and systematic commercial electricity supply.

B. Role of DISCOMs

P2P trading cannot simply eliminate the physical role of distribution companies because the public distribution network continues to carry electricity.

C. Open access

Where electricity moves through a distribution network to another consumer, open-access principles and applicable charges may become relevant.

D. Regulatory jurisdiction

Both central and state regulatory institutions may potentially have roles depending upon the structure of the transaction.

E. Consumer protection

Residential consumers participating in P2P markets require safeguards concerning billing, service quality and dispute resolution.

F. Metering

Smart-meter infrastructure and settlement rules are essential for legally enforceable P2P transactions.

19. Regulatory Design for P2P Electricity Trading

A comprehensive legal framework could contain the following elements:

20. Conclusion

Peer-to-peer electricity trading represents a significant transformation from the traditional electricity model in which a central utility generates or procures electricity and supplies consumers through a regulated network.

Its principal legal difficulty is that electricity remains simultaneously a private economic commodity and a regulated public infrastructure service.

The most significant legal challenges therefore concern:

licensing of P2P platforms;

legal status of prosumers;

network access;

distribution charges;

balancing responsibility;

consumer protection;

smart contracts;

data privacy;

cybersecurity;

market competition;

metering;

renewable-energy certification;

taxation; and

emergency intervention.

The existing electricity-market case law demonstrates that technological innovation does not automatically displace established regulatory institutions. Bursa Română de Mărfuri and Hidroelectrica, in particular, show the importance of examining electricity trading within the broader statutory and regulatory structure rather than treating it as an ordinary private commercial transaction. (EUR-Lex)

The future legal architecture of P2P electricity trading will therefore need to achieve a balance between consumer autonomy and innovation on one side, and grid reliability, fair network costs, market integrity, cybersecurity and public-interest regulation on the other.