General Topics
Users
Energy system users are individuals, households, organisations, and communities that interact with the electricity system at the grid edge, occupying roles from passive consumption to active generation, storage, and market participation. The labels applied to them — consumer, customer, citizen, prosumer — carry distinct assumptions about their relationship to the system, and these distinctions shape policy design and decision-making.
Why this matters
Users who once had a purely passive role — receiving energy and paying bills — can now generate, store, sell, or exchange electricity via the grid. Community energy projects give groups of users collective agency over local generation and distribution. Aggregators serve as intermediaries, enabling users to provide flexibility and other system services without managing technical and market complexity directly. These shifts require governance frameworks that can accommodate actors with very different capacities, preferences, rights, and levels of access shaped by geography, economic situation, and grid infrastructure.
The choice of label for users is not neutral. Designing policy around 'consumers' tends to favour price signals and market access. Designing it around 'citizens' tends to address access, affordability, and participation in governance.
A shared definition
Users are entities that interact with the energy system for the purpose of consuming, producing, storing, or managing energy at the grid edge. The term deliberately encompasses the full range of roles that people and organisations can play, from passive recipients to active market participants. The choice of label reflects different dimensions of this relationship.
| Term | Emphasis | Relationship to the system |
|---|---|---|
| User | Broadest term, covers any entity at the grid edge | Functional: using energy in daily life or production processes |
| End-user | Final recipient in the supply chain | Technical: the last point where energy is converted into a useful service |
| Consumer | Purchasing and using energy services | Economic: transactional relationship with energy providers |
| Customer | Formal contractual relationship with a provider | Commercial: billing, service agreements, choice of plans |
| Citizen | Member of a broader community with rights and responsibilities | Political: participation in governance, democratic shaping of energy policy |
| Prosumer | User who both produces and consumes electricity | Hybrid: generates, stores, or exports energy alongside consuming it |
These categories overlap in practice. A single household may be simultaneously an end-user, a customer of a retailer, a consumer making choices based on price, and a prosumer with rooftop solar. Individual members may also be citizens with a stake in local energy planning decisions.
Perspectives
How users are understood depends on whether one looks through the lens of actor behaviour, technical interaction, or institutional design. Each perspective reveals different needs, capacities, and barriers — identifying whose participation depends on what conditions, what infrastructure makes possible, and which roles are actually permitted and incentivised.
Actors and stakeholders
Users differ substantially in their capacity and willingness to engage actively with the energy system. Large industrial users can negotiate bilateral contracts and participate in wholesale markets. Residential users typically interact through retail contracts and may have limited awareness of available options. Community energy groups create collective action models that enable participation at a scale individual households could not achieve alone. Aggregators serve as intermediaries, enabling users to provide flexibility and other system services without managing technical and market complexity directly.
Bangladesh – IDCOL solar home systems
Over four million off-grid rural households obtained electricity through a programme that positioned users as adopters of a specific technology package, with a financing model tailored to rural income patterns.1)
Germany – Energiegenossenschaften
Energy cooperatives enable citizens to co-own renewable generation assets collectively, shifting the user role from passive consumer to co-investor and decision-maker in local energy production.2)
Mexico – distributed generation regulation
Mexico's electricity regulations permit distributed generation through shared self-consumption arrangements serving multiple users including tenants and those without suitable roof space, with systems up to 0.7 MW exempt from generation permits when connected to distribution networks.3)
Technologies and infrastructure
The technologies through which users interact with the grid determine what roles they can play. Smart meters provide consumption data and enable time-varying tariffs. Home energy management systems automate responses to price signals. Solar panels and batteries transform a household from a load into a flexible resource. Electric vehicle chargers add controllable end-use and, with vehicle-to-grid capability, potential feed-in. The availability, affordability, and usability of these technologies vary widely across countries and income levels, creating uneven conditions for user participation.
Japan – home energy management systems
The 7th Strategic Energy Plan promotes widespread deployment of integrated home energy management combining solar, battery, heat pump, and appliance control into a single user interface, enabling active energy management at the household level.4)
Kenya – M-KOPA pay-as-you-go solar
A technology and financing model using mobile payment systems and embedded connectivity to provide solar energy access to low-income households, making the user relationship primarily digital and service-based.5)
Netherlands – smart charging pilots
Electric vehicle charging infrastructure is being designed to respond to grid conditions, requiring users to accept some scheduling of charging times in exchange for lower costs or grid service compensation.6)
Institutional structures
How users are defined in law and regulation determines their rights, obligations, and opportunities within the energy system. Connection rights, tariff structures, net metering rules, data access policies, essential service rights, and consumer protection standards all shape user roles. Where regulation treats users only as consumers, market-based allocation tends to dominate. Where institutional frameworks recognise a broader range of roles — self-generation, community participation, flexibility provision — the conditions for diverse user engagement expand.
European Union – Electricity Market Directive 2019/944
Defines active customers, citizen energy communities, and the right to self-generation, establishing legal categories that go beyond passive consumption and create institutional space for diverse user roles.7)
Philippines – Electric Power Industry Reform Act
Established retail competition and customer choice in electricity supply, though implementation varies by region, with many rural users served by electric cooperatives under regulated terms.8)
Key terms
| Term | Definition |
|---|---|
| End-user | The final recipient in the energy supply chain who consumes energy for its intended use, representing the last point where electricity is converted into a practical application. |
| Prosumer | A user who both produces and consumes electricity, typically through distributed generation such as rooftop solar, often combined with storage.9) |
| Active customer | A user who participates in the electricity system beyond passive consumption, for example through demand response, self-generation, storage, or selling flexibility services.10) |
| Energy access | The physical and economic ability to obtain reliable electricity services, a foundational condition for any form of user participation in the energy system.11) |
| Aggregator | An intermediary that combines the flexibility or generation capacity of multiple users into a single portfolio for market participation or system service provision.12) |
| Energy poverty | A condition in which households cannot afford adequate energy services, limiting their ability to participate actively in energy markets or adopt grid-edge technologies; recognised as a policy concern in the EU Electricity Market Directive and national regulatory frameworks. |
Distinctions and overlaps
Consumer vs. citizen
The consumer framing emphasises individual economic choices within regulated markets; the citizen framing emphasises collective rights, democratic participation, and social equity. Policy designed around consumers tends to focus on price signals and market access; policy designed around citizens tends to address access, affordability, and participation in governance.
End-user vs. prosumer
An end-user is defined by consuming energy at the grid edge; a prosumer actively generates and potentially feeds electricity back to the grid. The distinction matters for grid planning, tariff design, and network charges, since prosumers affect local grid flows in ways passive end-users do not.
Active vs. passive users
Active users engage with the energy system through demand response, self-generation, or market participation; passive users receive electricity without adjusting end-use in response to system signals. The capacity to be active depends on access to technology, information, and institutional arrangements — not solely on individual choice.13)