Digital Asset Classification in Electricity Systems

1. Introduction

Digital asset classification in electricity systems means deciding what legal category should be given to digital things used in the electricity sector. These may include energy tokens, renewable-energy certificates, digital carbon credits, blockchain records, smart-contract rights, digital guarantees of origin, and tokens representing electricity or flexibility services.

This issue is becoming important because modern electricity systems increasingly use smart meters, blockchain, peer-to-peer trading, battery storage, demand-response platforms and automated transactions.

The legal difficulty is that a digital asset may have several functions at the same time. It may represent electricity, prove that renewable electricity was generated, provide a contractual right, or have independent economic value. Therefore, classification determines which legal rules apply.

2. Why Classification Matters

Classification is important because different legal categories create different rights and obligations.

For example, a digital electricity token could potentially be treated as:

Property – capable of ownership and transfer;

A contractual right – creating rights between consumers and suppliers;

A financial asset – potentially subject to financial regulation;

An energy certificate – representing an environmental or electricity attribute;

A payment instrument – used to settle electricity transactions; or

A regulatory record – proving that a particular electricity transaction occurred.

The legal classification affects ownership, taxation, consumer protection, insolvency, enforcement, transferability and regulatory supervision.

3. Digital Assets as Property

English law has increasingly recognised that some digital assets can constitute property.

The traditional law of personal property mainly distinguished between things in possession and things in action. Digital assets do not always fit neatly into either category.

The Court of Appeal in Tulip Trading Ltd v Bitcoin Association for BSV [2023] EWCA Civ 83 recognised Bitcoin as property. The court focused particularly on its transferable and rivalrous nature: one person's control of the particular Bitcoin prevents another person from simultaneously controlling that same asset. (Bailii)

This principle can be relevant to electricity-sector digital tokens.

4. Property (Digital Assets etc) Act 2025

The legal position has developed further through the Property (Digital Assets etc) Act 2025, which received Royal Assent on 2 December 2025.

The Act confirms that certain digital assets can attract personal-property rights even where they do not fit into the traditional categories of personal property. The Law Commission had recommended recognition of digital assets as a distinct category capable of property protection. (Law Commission)

This is particularly relevant to energy systems using blockchain-based tokens.

For example, a token representing a unit of renewable electricity could potentially have proprietary characteristics, depending on its design and legal rights.

5. Electricity Tokens

A possible application is a renewable-energy token.

Suppose a household produces 1 kWh of surplus solar electricity. A blockchain platform could create a digital token representing that electricity or an associated environmental attribute.

The token could potentially be:

Solar generation → digital record → token → transfer → electricity settlement

The legal question is whether the token represents:

the electricity itself;

a contractual entitlement to electricity;

a renewable-energy certificate;

a financial interest; or

simply information recorded on a blockchain.

The answer depends on the legal design of the system.

6. Digital Certificates and Environmental Attributes

Digital assets in electricity systems may also represent environmental attributes rather than electricity itself.

Examples include:

renewable-energy certificates;

guarantees of origin;

carbon credits;

emissions allowances; and

certificates showing renewable generation.

This distinction is important because electricity and the environmental characteristic of electricity are not necessarily the same legal asset.

A token could therefore represent the environmental benefit associated with electricity without representing ownership of the physical electricity.

7. Case Law: AA v Persons Unknown [2019] EWHC 3556 (Comm)

In AA v Persons Unknown, the High Court considered whether Bitcoin could constitute property for the purpose of granting a proprietary injunction.

Bryan J concluded that cryptocurrency such as Bitcoin could be property because it was identifiable, transferable, capable of assumption by another person and sufficiently permanent. The decision built upon the traditional property principles in National Provincial Bank v Ainsworth [1965] AC 1175. (Bailii)

Relevance to electricity

If an electricity token has similar characteristics, the court may potentially recognise proprietary rights in it.

This could be important where tokens are stolen, hacked or transferred without authority.

8. Case Law: Tulip Trading

Tulip Trading is particularly useful because it explains why cryptocurrency can be treated as property.

The Court of Appeal noted that Bitcoin's technical structure makes it rivalrous. Because the same Bitcoin cannot simultaneously be controlled by two different persons, it can satisfy important characteristics of property. (Bailii)

Electricity relevance

The same reasoning could potentially apply to a blockchain-based electricity token if the token is uniquely identifiable and control by one person prevents simultaneous control by another.

However, this should not be assumed automatically. The legal characteristics of each energy token must be examined individually.

9. Case Law: D'Aloia v Persons Unknown [2024] EWHC 2342 (Ch)

In D'Aloia v Persons Unknown, the High Court again considered cryptocurrency as property and discussed the development of digital-asset property law.

The judgment recognised the significance of the reasoning in AA and Tulip Trading and discussed the distinction between the digital token itself and rights associated with the token. (Bailii)

Relevance

This is useful for electricity law because a digital energy token may contain both:

the digital token + contractual/energy rights connected to that token.

Courts may therefore need to distinguish between the asset and the legal rights attached to it.

10. Classification and Smart Contracts

Digital electricity systems may use smart contracts to automatically perform transactions.

For example:

Solar generator produces electricity → meter records generation → smart contract verifies data → token is created → token transferred to buyer.

The smart contract itself may be different from the digital asset.

Therefore, legal analysis should distinguish:

data;

token;

contractual rights;

electricity transaction; and

payment obligation.

This prevents the mistake of treating every blockchain record as the same legal object.

11. Financial Regulation

Some digital assets used in electricity markets may potentially fall within financial regulation.

The Financial Services and Markets Act 2023 recognised the growing importance of cryptoassets and described them broadly as digital representations of value or contractual rights capable of being transferred, stored or traded electronically. The legislation also recognised that there was no single internationally agreed classification of cryptoassets. (Legislation.gov.uk)

Therefore, an electricity token designed mainly as a payment or investment instrument may require a different legal analysis from a token used simply to record renewable generation.

12. Energy-System Governance

Classification is also important for regulators.

If a digital asset represents electricity, the system may need to comply with:

electricity licensing;

market rules;

metering requirements;

consumer-protection law;

data-protection law;

financial regulation;

cybersecurity requirements; and

energy-trading rules.

This means digital-asset classification should be carried out according to the function and legal rights of the asset, not simply according to the technology used.

13. Main Legal Challenges

Several challenges remain.

1. Multiple functions

One token may represent electricity, payment and environmental benefits simultaneously.

2. Ownership

The law must identify who legally owns the token and who controls the private key.

3. Transfer

It must be clear when ownership legally transfers.

4. Insolvency

If a platform becomes insolvent, users need to know whether their tokens are their property or merely contractual claims against the platform.

5. Cross-border transactions

Blockchain electricity markets can involve participants in several jurisdictions, creating conflict-of-law questions.

14. Conclusion

Digital asset classification is becoming an important part of electricity law because digital technologies are changing how electricity, environmental attributes and energy-related rights are recorded and traded.

The modern legal approach increasingly recognises that certain digital assets can constitute property. The decisions in AA v Persons Unknown, Tulip Trading and D'Aloia demonstrate this development. (Bailii)

The Property (Digital Assets etc) Act 2025 further strengthens the legal framework by confirming that certain digital assets can attract property rights. (Law Commission)

For electricity systems, however, classification cannot depend only on whether blockchain technology is used. The crucial question is what the digital asset actually represents and what legal rights it creates. A token representing electricity, a renewable-energy certificate, a payment instrument and a financial investment may require different legal treatment.

Thus, digital-asset classification provides the foundation for determining ownership, transfer, regulation, consumer protection, enforcement and market participation in increasingly digital electricity systems.