Industrial Symbiosis - A Pathway to Circular Industry
Industrial symbiosis (IS) is one of the most effective strategies for creating a circular and resource-efficient economy. The concept is based on collaboration between industries to use each other’s by-products, waste, and resources — turning what would otherwise be discarded into valuable inputs for new production.
In essence, industrial symbiosis mimics natural ecosystems, where nothing is wasted and every output becomes a resource for another process. Companies participating in industrial symbiosis exchange materials, energy, water, or services in a way that benefits both the environment and the economy. This approach helps reduce raw material use, cut waste generation, lower greenhouse gas emissions, and improve business competitiveness through cost savings and innovation.
Across Europe, industrial symbiosis has become an essential part of the transition to a circular economy. Many EU countries have integrated IS practices into their national circular economy strategies, supporting collaboration between companies, municipalities, and research institutions. Networks and digital platforms facilitate these exchanges by connecting potential partners and identifying synergies between different sectors and regions.
For more information about this concept, you can view the website of the EU cluster collaboration: https://www.clustercollaboration.eu/is-tooklit
Building on this successful experience, CENN, within the framework of the EU-funded project “Circular Cities and Regions in Georgia”, is establishing the Network of Industrial Symbiosis. The network is created through close collaboration and partnerships among business entities and sector associations, fostering initiatives such as material exchange, closed-loop manufacturing, and packaging collaboration. These efforts aim to optimize resource use, reduce waste, and enhance the sustainability of business processes.
To establish the network, the project is mapping businesses in Adjara AR and the Kakheti region and analyzing their input resources and output products. This assessment provides valuable insights into how enterprises utilize resources, manage production processes, and handle waste generation. The data helps identify potential matches and synergies between companies to encourage collaboration focused on waste prevention and circular economy principles.
Through the Industrial Symbiosis Network, CENN connects businesses and supports their cooperation by formalizing partnerships via Memoranda of Understanding (MoUs). The network unites business entities and sector associations across the two target regions, promoting innovation, efficiency, and circular transformation within Georgia’s private sector.
Industrial symbiosis demonstrates that environmental responsibility and economic growth can coexist — transforming industries into ecosystems of shared resources and circular innovation.
Visit our Industrial Symbiosis page, explore our member businesses, and discover the growing community of companies shaping Georgia’s circular future.
Key principles of the circular economy
At its core, the circular economy is a regenerative model designed to ensure that materials never become waste and that natural ecosystems are actively restored. It breaks the traditional link between economic growth and the consumption of finite resources, providing effective solutions to pressing global challenges like climate change, biodiversity loss, pollution, and resource scarcity.
In contrast, the linear “take-make-waste” economy is marked by excessive extraction, high consumption, and vast amounts of waste. Today, of the 100 billion tonnes of materials entering the global economy each year, only 8.6% are cycled back into use. The rest is lost – locked away in long-lived stock such as buildings and infrastructure, released into the environment through pollution, or dumped in landfills.
The circular economy aims to reverse this by designing out waste and pollution, keeping products and materials in use for as long as possible, and actively regenerating natural systems.
By shifting away from the linear model, the circular economy can help address critical risks such as resource shortages, rising global temperatures, and the business challenges posed by market volatility – ultimately securing a more resilient and prosperous future for both people and the planet.
The circular economy is built around three core principles, all of which are driven by purposeful design.
- Eliminate waste and pollution
- Circulate products and materials at their highest value
- Regenerate nature.
By redesigning our systems around these principles, we can create a more resilient, sustainable and inclusive economy — one that works in harmony with people and the planet.
The foundational pillars of a circular economy are:
The successful transition to a circular economy depends on a shared understanding of, and commitment to, several key practices.
Sustainable resource acquisition:
Prioritising the use of recycled, renewed or responsibly sourced materials over virgin natural resources.
Circular design:
Creating products with durability, modularity, reusability and recyclability in mind, to enable longer lifespans and easier end-of-life management.
Maintenance and repair:
Supporting systems and services that keep products functioning for their original purpose or through adaptation, rather than discarding them prematurely.
Refurbishment and reuse:
Giving products a second life by cleaning, updating or repurposing them extends their usability while conserving resources.
Recycling:
Breaking down used materials into raw components to manufacture new products reduces the need for virgin materials.
Circular supply chains:
Integrating renewable, biodegradable or recycled materials throughout production cycles to reduce environmental impact.
Energy recovery:
When reuse or recycling isn’t possible, converting waste into energy helps to recover value while minimising landfill use.
The butterfly diagram
The circular economy system is often illustrated by the butterfly diagram, which depicts the continuous flow of materials through two distinct but interconnected cycles: the technical cycle and the biological cycle. In the technical cycle, products and materials are preserved and recirculated through processes like reuse, repair, remanufacturing, and recycling—maximizing their value for as long as possible. Meanwhile, in the biological cycle, biodegradable materials are safely returned to the Earth, where their nutrients help regenerate natural systems.
Find out more about each side of the butterfly diagram – the biological cycle and the technical cycle: https://www.ellenmacarthurfoundation.org/circular-economy-diagram
Design as a rethinking stage
Everything around us—clothing, buildings, objects—is shaped by human design. Yet creating new products should go beyond function to also consider long-term environmental impacts. This is where circular design plays a crucial role, aligning with the core principles of the circular economy: eliminating waste, reusing materials, and regenerating nature.
Most products today follow a linear model, which makes it essential to rethink design through a circular lens. The circular design process includes:
- Understand – user needs, challenges, and systems
- Define – possible design challenges
- Make – prototype alternatives
- Release – deliver the final product
At each stage, both user needs and environmental impact must be considered. This mindset is the foundation of circular design and helps identify sustainable, system-based solutions.
Key Strategies in Circular Design
From Product to Service
Shifting from ownership to service models (e.g., leasing or return schemes) encourages longer product use and recovery.
Product Longevity
Designing for durability and adaptability allows products to serve users longer, reducing the need for constant replacement.
Materials
Not all materials suit circular systems—choosing non-toxic, recyclable inputs is essential for health and environmental safety.
Dematerialization
This approach reduces physical resource use, often by going digital. Platforms like Spotify or Netflix exemplify this.
Modular Design
Products built with interchangeable or upgradable parts can be easily repaired or repurposed, minimizing waste.
Together, these strategies support future-oriented design—a pillar of the circular economy. By embracing them, manufacturers help build a more sustainable, resilient, and resource-efficient world.
Stages of Implementing Circularity in Business
Many products we consume end up in landfills, where they persist for years, polluting the environment and threatening health. The circular economy offers an alternative: keeping materials in use by transforming waste into new resources. A key approach within this model is the R-strategy, which rethinks product design, consumption, and disposal through 10 essential principles across three cycles.
Short Loops – From Refusal to Repairability
Short loops keep products as close as possible to their original form and function, extending their use with minimal changes. This cycle includes:
- Refuse: Avoid unnecessary consumption and prioritize reused or existing materials.
- Reduce: Minimize material use during production or consumption to lower environmental impact.
- Resell/Reuse: Bring used products back into the market after minor modifications.
- Repair: Fix or replace components instead of discarding slightly damaged products.
Medium-Long Loops – From Refurbishing to Repurposing
These business-driven strategies extend a product’s life or give it new functions:
- Refurbish: Upgrade or redesign parts of a product while keeping its structure.
- Remanufacture: Disassemble and rebuild products to extend their lifespan.
- Repurpose: Transform items to serve new functions (e.g., glass bottles into mugs).
Long Loops – From Recycling to Re-Mining
These processes recover materials when reuse isn’t possible, often changing the product’s form:
- Recycle: Turn waste into raw materials, often with loss of original structure.
- Recover: Generate energy from waste through incineration or biomass.
- Re-Mine: Extract valuable materials from landfills or waste deposits.
The 10R strategies fall into three categories: consumer behavior, business upgrades, and material recovery. Transitioning to a circular economy means changing how we design, use, and value products. Embracing these strategies not only protects the planet but also fosters innovation and new economic opportunities for a sustainable future.
Impact frameworks for circular economy
To assess whether circular economy activities are delivering meaningful benefits for people and the planet, several widely recognised frameworks can be used. These provide structured approaches for measuring impact at scale and guiding decision-making.
1. Planetary Boundaries Framework
Developed by the Stockholm Resilience Centre, the Planetary Boundaries Framework identifies nine critical thresholds that define a “safe operating space” for humanity. Staying within these boundaries ensures the planet can continue to support life and human development for generations to come. This framework is a valuable tool for evaluating the environmental effectiveness of circular economy strategies at scale.
→ Explore: https://www.stockholmresilience.org/research/planetary-boundaries.html
2. Sustainable Development Goals (SDGs) and Indicators
The 17 Sustainable Development Goals (SDGs), supported by more than 200 measurable indicators, form a global blueprint for peace, prosperity, and sustainability. While several goals—such as SDG 12 on responsible consumption and production—are directly aligned with circular economy principles, all SDGs are interconnected and relevant. This framework helps assess how circular initiatives contribute to broader social, economic, and environmental objectives.
→ Explore: https://unstats.un.org/sdgs/indicators/indicators-list/
3. Doughnut Economics
Doughnut Economics introduces a social foundation to complement the ecological ceiling defined by planetary boundaries. It defines the safe and just space in which humanity can thrive—where essential human needs are met without overshooting environmental limits. This holistic model is increasingly used to evaluate circular strategies for both social equity and ecological sustainability.
→ Explore: https://doughnuteconomics.org/about-doughnut-economics
Learn more about circular economy
There is a wealth of resources available on the circular economy—covering its concepts, frameworks, real-world examples, action plans, and more. Here, we’ve curated the most essential websites to help you explore the topic in depth:
https://www.ellenmacarthurfoundation.org/
https://www.circle-economy.com/
https://www.europarl.europa.eu/topics/en/topic/circular-economy
Send us an email at: info@cenn.org
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