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Circle Economy and ICLEI have partnered up to initiate the go to knowledge hub of case studies about the circular economy in cities. The Cities Collection is a repository of case studies that demonstrate the role of cities in the circular transition, and includes policies, business cases and research articles. Cases in the Collection flow into an ecosystem of digital products which support users in transitioning cities to circularity, for example [Ganbatte](https://ganbatte.world/cities/) and <a href="https://circulars.iclei.org/" target="_blank">ICLEI Circulars</a>, both part of the <a href="https://circulars.iclei.org/circle-lab-for-cities/" target = _blank">Circle Lab for Cities Programme.</a>




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Circular Cities

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This collection features a selection of case studies, based on the global *Circularity Gap Reports*, that can mitigate climate breakdown by reducing virgin material consumption, waste and greenhouse gas emissions. The latest **[Circularity Gap Report 2023](https://www.circularity-gap.world/2023#download)** reveals that the global economy is now only 7.2% circular and outlines how circular solutions across four sectors can bring global planetary boundaries back within safe limits. 

In the six years of the *Circularity Gap Report*, the global economy has extracted and used unprecedented amounts of materials. The first edition of the *Report *in 2018 found that global circularity was 9.1% and it has decreased every year since—leaving a Circularity Gap of over 90%. If this trend continues, we will have to find more and better solutions to combat the negative effects of climate change. This is why we have identified case studies from across the globe—based on the needs of society and planetary health—that serve as real-world examples of the circular economy in action.

Circle Economy is a not-for-profit organisation working to accelerate the circular transition. Through the *Circularity Gap Reporting Initiative*, our mission is to deliver an annual global Circularity Metric that measures the state of the world economy and identifies key levers to transition to global circularity. With nature as our guide, we work alongside cross-sector stakeholders from academia, businesses, NGOs and governments to provide a powerful combination of practical and scalable interventions that transform circular opportunities into realities. 


To learn more about these interventions to accelerate the circular transition, read the latest [Circularity Gap Report 2023](https://www.circularity-gap.world/2023#download), as well as previous editions of the global [Circularity Gap Reports](https://www.circularity-gap.world/global).

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Global Circularity Gap Report 2023

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Policy case

Impact on the health and happiness of human populations

Well-being

Reduced green house gas emissions released into the biosphere

Reduce Emissions (SDG13)

Processing and producing food and beverages for consumption

Food and Beverage

'Inform' increases the overall levels of awareness and builds the necessary skills and knowledge around the circular economy to foster long-term change.

Inform

 Develop research, structure knowledge, encourage innovation networks and disseminate findings with integrity


Strengthen and advance knowledge

Redesign systems to lay the foundation for circular activities and enable the transition to a circular economy 

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Rethink

Do better with less by using and supporting infrastructure, processes and products that are designed to minimize material, water and energy use and waste generation from production to end of use


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Reduce

Facilitate cross-collaboration by engaging city departments, industries and businesses on ambitious, closed-loop circular projects.

Support closed-loop systems and cross-sectoral synergies

Increase efficiency and promote local economic growth by shortening supply chains and connecting local producers to consumers.


Support local low-impact circular economies

The food system nourishes populations and employs 50% of the global workforce, but:
- it currently drives a quarter of the overshoot on the climate change planetary boundary due to its greenhouse gas (GHG) production, 
- animal farming alone uses over one-quarter of all land, equivalent to the size of the Americas,
- nearly a quarter of freshwater resources are lost due to rampant food waste, and
- it is the single largest driver of biodiversity loss.

A circular food system must address the whole value chain, from production to consumption to waste management. The four key solutions for the food system are:
- Put healthier, satiating foods first: Prioritise satiating and healthy foods with a lower environmental impact—ideally shifting calories from meat, fish, and dairy towards cereals, fruits, vegetables, and nuts.
- Go local, seasonal, and organic: Prioritise the production and consumption of local, seasonal, and organic produce (sometimes in combination with GMO to reduce pests and disease loss on crops), which can lead to a significantly reduced need for chemical inputs, fuels, and processing services that contribute to environmental impacts.
- Mainstream regenerative agriculture: Scale up agricultural practices that regenerate ecosystems, recirculate nutrients and sequester carbon by design. 
- End avoidable food waste: Minimise food loss and valorise waste following the food waste hierarchy along the supply chain and at the consumer level through better management of transport and storage, more refrigeration and smart planning, and technology at the consumer and food service levels.



🍏 Food Systems

Communities

Governments

The second biggest category in terms of resource use is the need for nutrition. Agricultural products such as crops and livestock require 21.8 billion tonnes yearly. Food products have short lifecycles in our economy, being consumed quickly after production.



Nutrition

- Consume mostly plant-based diets: Eliminate or decrease purchases of certain product categories by households as a consequence of a share of the population refusing or reducing consumption of animal-based food products.                                                                       The population is divided into segments (ks) and their purchases of food products change based on diet scenarios. Three main diets are identified: vegan (no animal-based food), vegetarian (no meat-based food), and Mediterranean (less meat-based food for fish and vegetables).

- Consume more balanced diets: decrease purchases of food product categories by households as a consequence of all (or a part of) population reducing overall calorific intake

- Eat less sugary foods and beverages
- Eat less processed foods

Saving: 1.32 Gt emissions and 0.42 Gt material use 

🍎 Healthy diet 

Engage with the local community where facilities or offices are located

Community collaboration

Designing products that can easily breakdown and degrade in the environment

Design for bio-degradability

Replace energy sources with less impactful alternatives and enact energy efficiency measures

Regenerative energy

Selling parts of modular products that can be exchanged or replaced

Sale of exchangeable parts

Working together with stakeholders and parties in other unrelated industries to implement circular economy strategies and opportunities

Cross-industry projects, pilots

Designing to enable multiple uses and lifecycles of a product and its materials

Design for cyclability

Engaging in discussions with government bodies and policymakers to push for regulations that support the circular economy

Advocacy for circular economy policy

Using renewable energy like solar, wind, etc. or renewable fuels like biomass, etc.

Renewable energy, fuels

Designing products of multiple parts that can be easily exchanged

Design for modularity

Working together with industry peers to engage in business activities or exploratory projects that advance the circular economy

Joint industry ventures, projects, pilots

Providing products through sharing between consumers, customers, etc.

Peer to peer sharing

Transforming waste products into materials and lower value products within other industries

Open loop downcycling

Providing DIY repair kits or spare part programmes for enabling self-repair

Self-repair, spare part service

Engage and guide customers and consumers to ensure circular use of products

Customer / consumer collaboration

Transforming waste products, materials for reuse within the same industry

Closed loop upcycling

Designing to reduce waste during production and use

Design out waste

Allowing customers to alter and modify certain features of the product

Customisation

Facilitate discussions and meetings between internal team members to identify circular opportunities

Dialogue with internal stakeholders

Generating energy from waste through processes such as anaerobic digestion, gasification, incineration, etc.

Generating energy from waste

Use digital, online platforms and technologies that provide insights to track and optimise resource use, strengthen connections between supply chain actors, and enable the implementation of circular models



Incorporate digital technology

While resources are in-use, maintain, repair and upgrade them to maximise their lifetime and give them a second life through take back strategies when applicable

Stretch the lifetime

Industry peers to industry peer collaboration to create joint value and identify synergies

Industry collaboration

Preserving and conserving biological products such as food, forests, etc.

Preservation, conservation

Working together with the community and engaging them in the company operations

Joint product development

Reuse, repurpose, and recycle waste streams within the same industry

Valorise waste streams - closed loop

Replacing freshwater use with rainwater, fogwater, seawater, etc.

Alternative water use

Initiatives with disadvantaged communities, minorities, people distanced from the labour market

Give-back programmes

Processing waste streams into fuels such as biogas, biofuels, pellets, etc.

Processing waste into fuel

Using bio-based materials such as bioplastics, mushroom-based materials, etc.

Alternative bio-based materials and inputs

Using waste materials that have been processed and recycled to produce new products within other industries

Using open loop recycled materials

Employ technologies to gather and analyse data to provide insights on resource use

Data and insights

Designing products so they produce as little waste as possible during production

Design for minimal waste

Takeback and return of products from customers after end-of-use

Takeback programmes

Transforming waste products, materials for reuse within other industries

Open loop upcycling

Upgrade, repair, and maintenance while in-use

Maximise lifetime of products in-use

Enacting measures that optimise water use

Water efficiency

Designing products that are made to last and to ensure longer use

Design for durability

Installing sensors to gather data from products and services to identify, enable and/or implement circular strategies (eg. effective resource use & logistics planning, circular business models & design)

Sensors, monitoring systems

Decentralised services that rely on the power of the crowd or the community

Crowd-based services

Marketplaces or services that enable the second hand sale of products

Second-hand sale, distribution

Engage internally to guide employees and facilitate greater knowledge sharing between internal divisions

Internal collaboration

Collection programmes that process products and parts for reuse or recycling within other industries

Open loop collection

Engage with the government on circular policies and programmes

Government collaboration

Engaging in discussions with customers to educate and raise awareness of the circular economy and explore circular opportunities together

Customer dialogue, marketing 

Integrating circular economy thinking into employee evaluations that are tied to professional compensation

Financial incentives tied to circular economy

Designing products so they are able to be easily repaired

Design for repair

Reuse, repurpose, and recycle waste streams within other industries

Valorise waste streams - open loop

Employ online platforms to connect and improve information sharing between stakeholders

Digital platforms

Using <a href="https://echa.europa.eu/information-on-chemicals" target="_blank">materials that are not toxic or hazardous</a>.

Non-toxic materials and inputs

Integrate principles of circularity into primary, secondary and tertiary curriculum and conduct workplace trainings

 Education and Curriculum

Account for the systems perspective during the design process, to use the right materials, to design for appropriate lifetime and to design for extended future use

Design for the future

Enacting measures that optimise energy use

Energy efficiency

Recover waste energy or generate fuels and energy from waste streams

Energy recovery from waste

Converting fossil fuel based operations to electric

Electrification

Collection programmes that process products and parts for reuse or recycling within the same industry

Closed loop collection

Selling high quality, long-lasting products

Sale of durable, long-lasting goods

Employing artificial algorithms and robotics to identify, enable and/or implement circular strategies (eg. effective resource use & logistics planning, circular business models & design)

Advanced robotics, artificial intelligence

Connecting products and services into the internet of things to identify, enable and/or implement circular strategies (eg. effective resource use & logistics planning, circular business models & design)

Internet enabled, connected operations

Utilise waste streams as a source of secondary resources and recover waste for reuse and recycling

Use waste as a resource

Developing or utilising online platforms to enable circular economy opportunities through information, product or service offering

Online platforms

Putting in place purchasing guidelines for procurement departments and evaluating suppliers on circular economy principles

Circular procurement

Providing upgrade programmes or upgrade services for products or parts of products

Product upgrade

Transforming waste products into materials and lower value products within the same industry

Closed loop downcycling

Designing products to increase consumer’s emotional attachment and ensure longer use

Design for product attachment, emotional durability

Replace freshwater with less impactful alternatives and enact water efficiency measures

Regenerative water

Providing repair services or maintenance services for products or parts

Product maintenance, repair

Ensure renewable, reusable, non-toxic resources are utilised as materials and energy in an efficient way

Prioritise regenerative resources

Key elements of the circular economy

<p>In 2019, the city of Stockholm published the climate cookbook written by the chef Carola Magnusson “Det smarta i köket”, which can be downloaded for free from the City of Stockholm's website. The book contains not only climate-smart recipes, but also tips on a more climate-smart diet, with the aim to push citizens to change their dietary habits and consume less animal products.</p>