Urban industrial symbiosis: a path towards sustainable partnerships

Industry in the EU is decarbonising, and at the same time becoming more resilient and competitive in order to meet long-term climate and energy EU objectives. Yet the role of industrial symbiosis, often overlooked in industrial and energy policies, remains underexploited. By effectively connecting industry and cities, urban industrial symbiosis offers a powerful pathway to reduce energy demand, strengthen resilience and unlock systemic efficiency gains. 

Symbiotic relationships powering Europe’s energy transition  

No one said the EU’s climate and energy transition would be simple and it is not. Still, this transition is opening many opportunities to explore for long-term wider societal benefits. One opportunity remains. To practically connect industry and communities to work together in the development of a symbiotic relationship in sustainability. Urban industrial symbiosis transforms locality into partnership. It unlocks structured exchanges in which one actor’s excess heat, by-products or services become another’s input. The concept of circularity becomes a shared experience. 

Energy efficiency remains the European Union’s most cost-effective energy resource, yet major opportunities are still lost at the interface between industry and cities. Urban industrial symbiosis addresses this gap by creating local energy loops that reduce primary energy demand and emissions across multiple sectors at once. 

The benefits of a shared experience  

These systems are not static. Early projects demonstrate feasibility and added value. Follow-up initiatives benefit from shared data, clearer business practices and established governance arrangements. What starts as a single exchange can evolve into a virtuous cycle of continuous efficiency gains, driven by peer learning and replication. This partnership becomes a long-term win-win.  

Just as communities become more resilient when neighbours cooperate, regions become stronger when cities and industries work together. Symbiotic systems planned at district or metropolitan scale can stabilise local energy supply, reduce exposure to volatile energy prices and strengthen security of supply. 

For industry, this translates into lower operational costs, reduced risk and greater predictability. For cities, it delivers more robust energy systems and local value creation. These shared benefits reinforce participation, making urban industrial symbiosis not only an environmental solution but a competitiveness strategy aligned with the objectives of the European Union.  

From good intentions to investable systems 

Experience shows that urban industrial symbiosis does not develop automatically. While technical solutions are essential, organisational and institutional factors are often decisive. These include access to data, legal clarity, trust between partners and the development of robust business models, particularly where exchanges involve organisations of different sizes.  

Successful initiatives therefore rely on dedicated coordination structures or neutral third-party facilitators. Much like trusted community figures in neighbourhood energy transitions, these facilitators can help align interests, manage exchanges and ensure continuity over time. Their role is crucial to move beyond isolated pilots and towards stable, investable systems that can support industrial planning, infrastructure development and long-term energy efficiency gains. 

Making cooperation contagious 

Fortunately, there are several EU-funded projects related to industrial symbiosis that can shed light on the benefits, explain how to implement and convince companies and local authorities to take action. These projects demonstrate feasibility and impact. The next step is taking these lessons and mainstreaming in the marketplace: embedding governance models, energy efficiency criteria and standards into policy frameworks, infrastructure planning and investment decisions. 

Making the unknown known 

Urban industrial symbiosis is complicated, bringing many actors together in a symbiotic sustainability-orientated relationship. These actors hardly know each other because they often link businesses and public administrations. Very often civil society too. It has proven to work, and it builts a real community bond addressing common long-term sustainability objectives.  

Importantly there are many long-term benefits. EU-funded projects such as REDOL are providing a level of confidence through an impressive track record of experience in different countries under different contexts. EU’s industry understands that this is an important turning point for change to address new regional and global market conditions. Industrial symbiosis has an important role to play to make the unknowns better known. Importantly, we are all learning. 

Recommended links: 

1. CEN EC for S (2018) CEN Workshop Agreement CWA 17354: Industrial Symbiosis: Core Elements and Implementation Approaches
2. WG2 Workshop & Conference, Industrial Symbiosis from a business perspective
3. Hubs4Circularity

About the authors

Project manager with a background in business economics and social innovation, Irene Paoletti specialises in integrating technology, sustainability and market-driven solutions. Her expertise lies in translating complex technological challenges into viable, impact-driven strategies that strengthen industrial competitiveness while delivering environmental and social value.

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Disclaimer: This article is a contribution from a partner. All rights reserved.

Neither the European Commission nor any person acting on behalf of the Commission is responsible for the use that might be made of the information in the article. The opinions expressed are those of the author(s) only and should not be considered as representative of the European Commission’s official position.