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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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Policy case

Impact on increased knowledge and understanding as a result of the case study

Increase Awareness

Impact on the ease of innovation, and facilitating uptake of innovations

Innovation

Scalability

Producing agricultural products and processing them into food and beverageproducts for consumption

Agri/Food

Extracting resources and processing them to produce materials for use bysociety

Materials and Fuels

Producing electrical equipment and machinery for industrial use

Capital Equipment

Producing transporation equipment and providing services for thetransportation of goods and people

Transportation and Logistics

Producing and providing business and consumer goods and services

Goods and Services

Providing specialist services to support consumers, businesses, andgovernments

Professional Services

Societal Services

Producing building materials and providing services to create residential and non-residential infrastructure and real estate


Construction and Infrastructure

Work together throughout the supply chain, internally within organisations and with the public sector and communities to increase transparency and create joint value

Team up to create joint value

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

Industry collaboration

Biogas produced by the anaerobic digestion of organic solid waste can be used as an energy source for cooking, lighting and generate electricity, replacing thus other fuels. Moreover, the treatment of organic waste alleviates the solid waste crisis in urban and peri-urban area if the developing world.


Use biogas

Locally produced food has to travel shorter, which means less fuel is consumed and less greenhouse gases are generated. Moreover, buying locally produced food helps local farmers and markets and creates more jobs in the local businesses. 


Produce locally

Other

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

 Education and Curriculum

Encourage workplace training

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


Strengthen and advance knowledge

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

Put enablers in place that allow circular businessesto grow, thrive and innovate (e.g. incubators, start-up funding, partnerships, innovation deals, business capacity building and testing groundsfor new business models).


Support circular and resource-efficient business innovations

Manufactured goods, such as vehicles, textiles, appliances and equipment and their associated production processes are big employers but:
- production processes often rely on fossil fuels and currently drive one-third of the overshoot on the climate change planetary boundary due to its GHG production, 
- material- and energy-intensive industrial activities are linked to deforestation and drive 15% on both the land use and freshwater planetary boundaries, 
- manufacturing goods results in substantial amounts of hazardous industrial waste and leaks chemicals into the environment.

Here, circular solutions must tackle the full value chain, but material demand must also shrink: this will necessitate a societal shift to favouring sufficiency over excess and reducing consumption to sustainable levels. Our four key solutions for manufactured goods are:
- Mainstream industrial symbiosis and efficiency : Achieve process improvements, scrap diversion and reduction in yield losses through greater industrial symbiosis and efficiency. Foster tighter collaboration within and between industries to deliver powerful material and emissions savings.
- Extend the lifetime of machinery, equipment, and goods: Maximise the lifetime of goods that serve our daily needs to bring a number of environmental benefits. 
- Buy what's needed: Reduce the number of purchases of common electronic goods, appliances, and other equipment to sufficiency levels. 
- Eschew fast fashion in favour of sustainable textiles: Drastically reduce new clothing purchases. All used clothing should go on to be repaired, reused or, if needed, recycled appropriately. Prioritise natural and local textile manufacturing, as well as higher-quality and more durable garments. 




👕📱 Consumer Goods

Businesses

Communities

Governments

Designing products with a single material type to more easily recycle them after use

Design for recycling - mono-materials

Extraction and reuse of parts from end-of-life products for use in new products

Part recovery

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

Crowd-based services

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

Cross-industry projects, pilots

Designing products to remove any barriers to recycling and enable easy recyclability

Design for recycling

Marketplaces or services that enable the second hand sale of own-brand products

Own brand second-hand sale

Utilising data and models to to identify, enable and/or implement circular strategies (eg. effective resource use & logistics planning, circular business models & design)

Data analytics, modelling

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

Use waste as a resource

Allowing customers to alter and modify certain features of the product

Customisation

Designing products so they are able to be easily repaired

Design for repair

Developing or utilising online marketplaces to enable the peer-to-peer exchange of products and services

Peer-to-peer online marketplaces

Providing repair services or maintenance services for products or parts

Product maintenance, repair

Transforming waste products, materials for reuse within the same industry

Closed loop upcycling

Ensure that biological products are properly managed and preserved

Maximise lifetime of biological products

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

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

Recover waste energy or generate fuels and energy from waste streams

Energy recovery from waste

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

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

Prioritise regenerative resources

Providing products through leasing, rental, or pay-per-use models instead of sales

Leasing, rental, pay per use

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

Using materials that can be easily reused or recycled after use

Reusable, recyclable materials and inputs

Selling parts of modular products that can be exchanged or replaced

Sale of exchangeable parts

Using waste materials that have been processed and recycled to produce new products within the same industry

Using closed loop recycled materials

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

Alternative bio-based materials and inputs

Deliver services through business models that ensure maximum value

Service business models

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

Preservation, conservation

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

Product upgrade

Provide guidance or professional training to educate employees to use circular economy principles

Training on the circular economy

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

Design for product attachment, emotional durability

Selling high quality, long-lasting products

Sale of durable, long-lasting goods

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

Online platforms

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

Generating energy from waste

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

Takeback programmes

Marketplaces or services that enable the second hand sale of products

Second-hand sale, distribution

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

Circular procurement

Deliver products through business models that ensure maximum value

Product business models

Designing products so they use as little materials, water, energy, etc. as possible during use

Design for resource efficiency

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

Design for durability

Participating in government programmes that support and advance the circular economy

Government programmes

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

Using open loop recycled materials

Working together with customers to jointly create products fit for them

Co-creation

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

Valorise waste streams - closed loop

Employ online platforms to connect and improve information sharing between stakeholders

Digital platforms

Using <a href="http://ec.europa.eu/growth/sectors/raw-materials/specific-interest/critical_sv" target="_blank">materials that are not considered critical</a>.

Non-critical materials and inputs 

Utilise bio-based, reusable, non-toxic and non-critical materials

Regenerative materials

Enacting measures that optimise material use such as 3D printing, etc.

Material efficiency

Providing services where customers are charged only when they use it

Payment per use

Providing products through sharing between consumers, customers, etc.

Peer to peer sharing

Engage with the government on circular policies and programmes

Government collaboration

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

Advocacy for circular economy policy

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

Data and insights

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

Closed loop collection

Reuse, repurpose, and recycle waste streams within other industries

Valorise waste streams - open loop

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

Customer / consumer collaboration

Consider opportunities to create greater value and align incentives that build on the interaction between products and services

Rethink the business model

Providing services through a subscription plan with regular payment schemes

Subscription-based services

Designing to reduce waste during production and use

Design out waste

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

Regenerative energy

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

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

Self-repair, spare part service

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

Alternative water use

Recovering and reusing waste heat, gas, etc. for energy

Recovery and reuse of waste energy

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

Design for minimal waste

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

Design for cyclability

Enacting measures that optimise water use

Water efficiency

Converting fossil fuel based operations to electric

Electrification

Designing products of multiple parts that can be easily exchanged

Design for modularity

Selling parts of modular products that can be refilled

Sale of refillable parts

Key elements of the circular economy

Startup in Residence is an initiative of&nbsp;StartupAmsterdam&nbsp;and the&nbsp;Chief Technology Office&nbsp;(CTO) of the City of Amsterdam. The programme connects startups with key&nbsp;social challenges&nbsp;in Amsterdam. Founded in Amsterdam in 2015, the programme invites both Dutch and international entrepreneurs to tackle these challenges in collaboration with the local government. Their innovative solutions impact the City as well as its citizens.Most solutions incorporate circularity elements, such as supporting green and efficient deliveries or developing a procurable circular textiles product. The Programme offers startups an intensive&nbsp;training programme, as well as the support of professional&nbsp;coaches or mentors. The startups will also be provided with working space and have access to the municipality’s network.