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Demand-side flexibility and the untapped potential of heat prosumers

· 3 min read
Juliana Zapata
Juliana Zapata
Zürich University of Applied Sciences (ZHAW), Institute of Sustainable Development (INE)

Why regulation, technology, and social inclusion must evolve together

The transformation of Europe’s energy system is accelerating. With the rapid deployment of variable renewable energy sources and decentralized assets, flexibility has become a critical enabler of a reliable and cost-efficient power system.

While much attention has been paid to electricity-based flexibility, demand-side flexibility provided by decentralized heat and electricity prosumers remains underexplored — particularly within district heating networks. Our report addresses this gap by applying a PESTLE framework (Political, Economic, Social, Technological, Legal, and Environmental) to identify the conditions that shape the development of demand-side flexibility in multi-energy systems.

A supportive — but still evolving — regulatory landscape​

At the political, regulatory, and legal level, the outlook is largely positive. Recent European policy developments, including EU Directive 2024/1711 adopted by the European Commission, explicitly recognize the importance of assessing non-fossil flexibility potential. Notably, waste heat is increasingly acknowledged as a renewable resource, enabling its integration into local decarbonization strategies and next-generation district heating systems.

However, despite this supportive direction, administrative complexity and fragmented implementation across Member States still limit the effective participation of decentralized actors in flexibility markets. Economic incentives meet investment risk From an economic perspective, several incentives exist to encourage investment in flexibility technologies and to improve the business case of modern district heating systems. Yet, these systems often require high upfront investment and long payback periods, which can deter private investors and smaller actors such as energy communities. Reducing perceived risk — through regulatory certainty, aggregation mechanisms, or innovative financing models — remains essential to unlock capital at scale.

Social inclusion and energy literacy as key success factors​

Demand-side flexibility is frequently associated with community empowerment and the potential to reduce energy poverty. Energy communities, in particular, can strengthen local engagement and collective action. At the same time, social barriers persist. Low energy literacy, unclear benefits, and the dilemma of maximising individual versus community benefits. can discourage households from participating in flexibility programs. Furthermore, the complex coordination among multiple stakeholders is often viewed as a barrier to implementing decentralized flexibility.

Technology: enabler and bottleneck​

Rapid advances in digitalization, smart metering, and data-driven services are major enablers of demand-side flexibility. These technologies allow consumers and prosumers to automatically respond to flexibility signals and open the door to new value propositions — from real-time consumption insights to advanced energy services. However, they also introduce challenges. Data privacy, cybersecurity, and technical complexity remain significant concerns. For heat prosumers in particular, system complexity has been identified as a major factor slowing down the deployment of next-generation district heating networks.

Environmental benefits and strategic directions​

The environmental case for demand-side flexibility is strong. By enabling the integration of renewable heat and electricity sources, flexibility contributes directly to CO₂ emission reductions.

From pilots to market reality​

Despite growing recognition, demand-side flexibility — especially in multi-energy systems — has not yet reached full market maturity. Recommended strategic directions to move demand-side flexibility beyond pilot projects are:

  • Strengthening regulatory and standardization frameworks to enable scalability
  • Developing transparent, digital business models that clearly reward flexibility
  • Improving energy literacy and stakeholder awareness
  • Encouraging partnerships between energy communities, utilities, and regulators