The European debate around energy communities is often dominated by technology. Discussions focus on blockchain, smart contracts, dynamic tariffs, flexibility markets, artificial intelligence, and digital energy platforms. Yet one of the most important findings emerging from U2Demo Deliverable D1.1 is that the primary obstacle to scaling energy sharing and peer-to-peer (P2P) trading in Europe is no longer technological capability. The challenge is governance.
Europe already possesses the technological tools required to enable citizens, businesses and local communities to generate, share and trade renewable energy. What remains uncertain is how these activities fit within the legal architecture of electricity markets that were originally designed around centralized production, one-directional energy flows and a clear distinction between producers and consumers.
The regulatory mapping conducted by U2Demo demonstrates that despite a decade of policy evolution and the adoption of the Clean Energy Package, Europe is still in the early stages of defining what community participation in electricity markets truly means.
The EU Created Rights, Member States Created Different Realities
A central insight from the deliverable is the distinction between European harmonization and national implementation. The Clean Energy Package established a new category of market participant: the active customer. Alongside this, it introduced Renewable Energy Communities (RECs) and Citizen Energy Communities (CECs), recognizing the right of citizens to collectively engage in generation, storage, consumption, sharing and, in some cases, trading activities.
However, the EU chose to implement these concepts primarily through directives rather than regulations. Directives establish objectives but leave considerable discretion to Member States regarding implementation. The consequence is a regulatory ecosystem where energy communities exist everywhere in Europe in principle, but operate under significantly different conditions in practice.
The legal comparison performed in D1.1 reveals that identical concepts such as energy sharing, community control, asset ownership or geographic proximity can produce markedly different outcomes depending on the jurisdiction. The deliverable also reveals that the distribution of roles and responsibilities throughout the energy-sharing phases differs among Member States. The role of issuing permits and licenses, proceeding with the sharing agreement registration, calculating or registering results, or settling financial effects is allocated to different actors – e.g., governmental institutions, DSOs, sharing organisers, or suppliers – and this distribution of roles diverges at the national level.
For platform developers, this creates a critical challenge. Designing a digital energy sharing system that works in Portugal does not automatically mean it can operate in Italy, Flanders or the Netherlands. Regulatory interoperability becomes just as important as technical interoperability.
Energy Sharing and P2P Trading Are Not the Same Thing
One of the most important contributions of D1.1 is conceptual clarity. Outside legal circles, energy sharing and peer-to-peer trading are often used interchangeably. Academic publications, technology vendors and pilot projects regularly mix both concepts. U2Demo’s legal assessment shows that this simplification obscures fundamental regulatory differences.
Under European law, P2P trading is fundamentally a sales contract. It involves the commercial exchange of energy between market participants under predetermined contractual conditions. Energy sharing, by contrast, is treated as a form of collective self-consumption. Shared electricity may have a value attached to it, but the activity itself is not necessarily a market sale.
This distinction is not merely semantic. It affects:
- Licensing requirements
- Tax obligations
- Balancing responsibilities
- Settlement processes
- Supplier obligations
- Market participation rules
In other words, two business models that appear technologically identical may be treated entirely differently under energy law. For U2Demo, this has profound implications because future digital platforms must be designed around legal realities rather than technical assumptions.
The Emerging Battle Over Ownership
Perhaps the most revealing finding of the deliverable concerns ownership. A deceptively simple question lies at the centre of many regulatory disputes:
Who must own the renewable generation asset in order for energy sharing to occur?
European legislation establishes that energy communities can share electricity produced by generation units owned by the community itself. The Electricity Market Reform introduced the possibility of energy communities also share electricity produced by assets owned, rented or leased by its members. However, D1.1 shows that Member States are interpreting and extending these provisions in different ways.
Portugal provides one of the most flexible frameworks, allowing community arrangements to include production units that are not necessarily owned directly by the energy community. Italy adopts a more structured interpretation emphasizing community availability and control. Flanders places significant emphasis on community ownership. The Netherlands is moving toward a broader active-customer model under future reforms.
This divergence may shape the future structure of European energy communities more than any technological innovation. Whether ownership remains collective, becomes hybrid, or evolves into new distributed models will directly influence investment patterns, participation rates and business models across Europe.
From Grid Users to Market Actors
Traditional electricity regulation treated consumers largely as passive actors. The legal frameworks examined in D1.1 tell a different story. Energy communities are increasingly recognized as entities that can:
- Generate electricity
- Store electricity
- Aggregate flexibility
- Supply energy
- Participate in markets
- Deliver energy services
- Manage community benefits
In some jurisdictions they can even play limited roles traditionally associated with network or market operators. This evolution represents more than a regulatory adjustment. It signals a structural transformation in how electricity systems are governed.
The energy transition is no longer simply about replacing fossil fuels with renewables. It is also about redistributing participation within energy systems and redefining who is allowed to create value.
Why D1.1 Matters Beyond U2Demo
At first glance, Deliverable D1.1 may appear to be a legal mapping exercise. In reality, it is something more significant. The report provides one of the clearest snapshots currently available of Europe’s transition from centralized electricity markets toward citizen-centred energy systems. It exposes the tensions between harmonization and national sovereignty, between innovation and regulation, and between technological possibility and institutional readiness.
For policymakers, the findings highlight where regulatory fragmentation may hinder scaling.
For developers, they reveal the legal constraints future energy platforms must accommodate.
For energy communities, they clarify the opportunities and restrictions shaping participation.
And for U2Demo itself, they provide the foundation for designing open-source solutions capable of functioning across diverse regulatory environments.
The key message is therefore not that Europe needs more technology to enable community energy. The key message is that Europe must now determine how far it is willing to redesign electricity markets around citizens. That is ultimately the question D1.1 places at the centre of the energy transition.
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