Introduction

Smart charging refers to the controlled management of electric-vehicle (EV) charging so that electricity consumption responds to grid conditions, electricity prices, renewable generation and network capacity. Vehicle-to-Grid (V2G) goes further by enabling electricity to flow from an EV battery back to the grid. Regulation therefore has to address not only transport law but also electricity-market rules, consumer protection, metering, data governance, cybersecurity, technical standards and distribution-network management.

The European Union has expressly recognised smart and bidirectional charging as tools for integrating EVs into electricity systems. Regulation (EU) 2023/1804 on alternative-fuels infrastructure requires Member States to assess how charging infrastructure can contribute to electricity-system flexibility and specifically requires assessment of bidirectional charging.

Regulatory Framework

A central regulatory issue is whether EVs should be treated merely as electricity consumers or also as flexible energy resources. Smart charging permits charging to be shifted away from network-constrained periods. V2G potentially allows aggregated EV batteries to provide balancing, flexibility and other electricity-system services.

The EU framework requires Member States to assess, at regular intervals, the contribution of charging points—including smart and bidirectional charging—to system flexibility and renewable-energy absorption. Regulatory authorities must also assess the potential contribution of bidirectional charging to reducing system and user costs and increasing renewable electricity use.

Technical interoperability is equally important. EU rules have progressively incorporated vehicle-to-grid communication standards, with Regulation 2025/656 addressing standards for wireless charging, electric-road systems and V2G communication. The newer ISO 15118-20 standard is particularly significant because it supports advanced smart charging and bidirectional functionality.

United Kingdom Regulation

The United Kingdom has adopted specific rules through the Electric Vehicles (Smart Charge Points) Regulations 2021. These rules establish technical and consumer requirements for relevant smart charge points, including measuring electricity imported and exported, maintaining functionality when connectivity is lost, and supporting demand-side response.

The UK framework also addresses grid stability. Smart charge points are subject to requirements designed to prevent simultaneous switching of large numbers of chargers, while consumers retain opportunities to override certain default charging arrangements. The regulatory approach therefore attempts to balance system efficiency with consumer control.

Important Case Laws

Skatteverket v Digital Charging Solutions GmbH, Case C-60/23 (CJEU, 17 October 2024) is particularly relevant. The Court held that electricity supplied for charging an EV at a public charging point constitutes a supply of goods for VAT purposes. It also considered situations involving an intermediary that provides users access to charging networks.

Although the case did not directly decide V2G regulation, its reasoning is important because smart-charging and V2G business models frequently involve multiple contractual parties—vehicle owners, charging-point operators, aggregators, mobility-service providers and electricity suppliers. The judgment demonstrates that the legal characterisation of electricity transactions depends substantially upon the contractual and economic structure of the arrangement.

In M/S Sharify Services Pvt. Ltd v M/S Blu-Smart Charge Pvt. Ltd (Delhi High Court, 29 May 2025), the dispute concerned an EV charging-services agreement involving installation, operation and maintenance of charging infrastructure. The order illustrates that contractual obligations surrounding EV charging infrastructure can themselves become the subject of commercial and arbitration proceedings.

Consumer, Data And Cybersecurity Issues

Smart charging depends on continuous communication between vehicles, chargers, aggregators and electricity-system operators. Regulation must therefore address ownership and use of charging data, transparent pricing, consent, cybersecurity and protection against unauthorised control of charging equipment.

V2G additionally raises questions concerning battery degradation, compensation for electricity exported to the grid, metering accuracy, network charges, taxation and responsibility for equipment failures. Clear rules are necessary to distinguish electricity supply, flexibility services and mobility services.

Conclusion

Smart charging and V2G regulation represents the convergence of electricity, transport, technology and consumer law. Modern regulatory frameworks increasingly recognise EVs as potentially flexible energy assets rather than passive electricity loads. The EU approach combines infrastructure obligations, system-flexibility assessments and interoperability standards, while the UK has established detailed requirements for smart charge points. Case law such as Skatteverket v Digital Charging Solutions provides useful principles concerning the legal and tax treatment of EV electricity transactions, while Indian commercial litigation demonstrates the importance of carefully drafted charging-infrastructure agreements. Future V2G regulation will increasingly depend upon interoperability, market access, transparent remuneration, cybersecurity, accurate metering and clearly allocated responsibilities among EV owners, aggregators, charging operators and electricity-system participants.