DEPARTMENT OF TECHNOLOGY MANAGEMENT AND ECONOMICS DIVISION OF SUPPLY AND OPERATIONS MANAGEMENT CHALMERS UNIVERSITY OF TECHNOLOGY Gothenburg, Sweden 2020 www.chalmers.se Report No. E2020:016 Reverse Logistics in the Transition Towards Circular Economy A Case Study of Customer Returns at IKEA Master’s thesis in Supply Chain Management Master’s Programme Karin Malmgren Karl Mötsch Larsson REPORT NO. E 2020:016 Reverse Logistics in the Transition Towards Circular Economy A Case Study of Customer Returns at IKEA Karin Malmgren Karl Mötsch Larsson Department of Technology Management and Economics Divison of Supply and Operations Management CHALMERS UNIVERSITY OF TECHNOLOGY Gothenburg, Sweden 2020 Reverse Logistics in the Transition Towards Circular Economy A Case Study of Customer Returns at IKEA Karin Malmgren Karl Mötsch Larsson © Karin Malmgren A, 2020. © Karl Mötsch Larsson, 2020. Report no. E2020:016 Department of Technology Management and Economics Chalmers University of Technology SE-412 96 Göteborg Sweden Telephone + 46 (0)31-772 1000 Gothenburg, Sweden 2020 Reverse Logistics in the Transition Towards Circular Economy A Case Study of Customer Returns at IKEA Karin Malmgren Karl Mötsch Larsson Department of Technology Management and Economics Chalmers University of Technology SUMMARY The world is facing an era of resource scarcity and worsened climate externalities. These challenges can partly be linked to industries embracing linear business models, producing beyond the limits of our planet. IKEA has addressed this issue by aiming to transform their current linear business into a circular business by 2030. The development of a closed-loop supply chain can support closing the loop of production and consumption by prolonging product lifecycles. Greater focus can be given to reverse logistics to enable product returns and recovery. The thesis aimed to analyse how IKEA’s transition from a linear to a circular economy affects customer returns and reverse logistics. This was achieved by examining the current reverse flow and exploring initiatives taken within IKEA that serve to facilitate a circular economy. This was done together with an analysis of how a transition towards a circular business model is affected by involved actors in the supply chain (i.e. customers, companies, and society). Interviews were carried out to identify important challenges and opportunities for IKEA in the transition towards a circular business model. During the study, three initiatives at IKEA were analysed; buy-back and take-back services, offering after sales parts, and usership models, to conclude how IKEA can collect and restore value in second-hand products. The thesis has shown a need for customer convenience in the return process to increase the return rate of end-of-life and end-of-use products. To avoid unnecessary transportation and handling, the thesis has shown the importance of early inspection and separation of products. Also, potential benefits could be seen in performing recovery close to the point of use. To facilitate recovery, the thesis identified product design, resource allocation, and availability of spare parts as critical factors. To accelerate the transition, it is important to understand customers and their attitudes toward second-hand products. Improved customer communication can increase understanding and promote circular behaviour. Based on this study, IKEA has to adapt mind-sets and processes to give larger attention to reverse logistics and the recovery of products to facilitate a circular economy. Keywords: Reverse Logistics, Circular Economy, Product Recovery, Circular Business Model, Retailing. i Acknowledgements This Master’s Thesis was written during the spring of 2020 at Chalmers University of Technology as the final part of the Supply Chain Management Master’s Programme. The thesis was conducted at IKEA of Sweden in collaboration with the Plan Balance Sales and Supply division. We would like to express our sincere gratitude to IKEA for providing us the opportunity to conduct this thesis and to all the employees who have shared their vast knowledge and offered us support. A special thank you to our supervisor Stefan Holmberg at IKEA of Sweden for all the assistance during the spring. Last but not least, our sincere thanks to our tutor and examiner, Kajsa Hulthén, for providing us with valuable input and guidance throughout the thesis. Karin Malmgren Karl Mötsch Larsson Gothenburg, June 2020 ii Table of Contents 1 Introduction ....................................................................................................................... 1 1.1 Background .......................................................................................................................... 1 1.2 Linear and circular economy .............................................................................................. 2 1.2.1 Shifting to a circular business model .............................................................................................. 3 1.3 Problem description ............................................................................................................ 4 1.4 Aim ........................................................................................................................................ 5 2 Empirical background ...................................................................................................... 6 2.1 IKEA Group ......................................................................................................................... 6 2.1.1 Inter IKEA Group ........................................................................................................................... 7 2.1.2 Ingka Group .................................................................................................................................... 8 2.2 The logistic supply chain of IKEA from a flow perspective ............................................ 8 2.3 Challenges and opportunities in a transition towards a circular business model.......... 9 3 Theoretical Framework .................................................................................................. 13 3.1 Reverse Logistics ............................................................................................................... 13 3.1.1 Driving forces behind Reverse Logistics ...................................................................................... 13 3.1.2 Reasons for customer returns ........................................................................................................ 15 3.1.3 Reverse Logistics Activities ......................................................................................................... 16 3.1.4 Recovery processes ....................................................................................................................... 17 3.1.5 Characteristics of a logistics system ............................................................................................. 18 3.2 Factors influencing the design of reverse logistics activities .......................................... 24 3.2.1 Collection ...................................................................................................................................... 24 3.2.2 Inspection and separation .............................................................................................................. 26 3.2.3 Reprocessing ................................................................................................................................. 28 3.2.4 Redistribution ............................................................................................................................... 30 3.3 Product-service systems .................................................................................................... 30 3.3.1 Product-oriented ........................................................................................................................... 31 3.3.2 Use-oriented .................................................................................................................................. 32 3.4 Problem discussion ............................................................................................................ 33 3.5 Research questions ............................................................................................................ 34 3.6 Research model .................................................................................................................. 34 4 Method ............................................................................................................................. 35 4.1 Research Strategy .............................................................................................................. 35 4.2 Research Process ............................................................................................................... 35 4.3 Research Design: Case Study ........................................................................................... 36 4.4 Data Collection ................................................................................................................... 36 4.4.1 Primary Data ................................................................................................................................. 37 4.4.2 Secondary Data ............................................................................................................................. 41 4.5 Data Analysis ..................................................................................................................... 41 4.5.1 The trustworthiness of findings in a qualitative research .............................................................. 42 iii 5 Empirical findings and identified challenges and opportunities .................................. 43 5.1 Customer returns at IKEA ............................................................................................... 43 5.1.1 Handling customer returns ............................................................................................................ 43 5.1.2 Current reverse flow ..................................................................................................................... 45 5.1.3 Challenges in IKEA’s current reverse logistics activities ............................................................. 47 5.2 Challenges for IKEA’s transition towards a circular business model .......................... 49 5.3 Ongoing initiatives at IKEA and how they affect the return flows ............................... 50 5.3.1 IKEA’s approach to improving the handling of customer returns ................................................ 50 5.3.2 Buy-back and take-back services .................................................................................................. 51 5.3.3 After Sales Parts ........................................................................................................................... 54 5.3.4 Usership Models ........................................................................................................................... 57 6 Analysis of challenges and opportunities related to involved actors ............................ 59 6.1 Challenges and opportunities for IKEA in relation to customers ................................. 59 6.1.1 Incentives and convenience .......................................................................................................... 59 6.1.2 Knowledge and communication ................................................................................................... 59 6.2 Challenges and opportunities in relation to companies ................................................. 60 6.2.1 Product offering ............................................................................................................................ 60 6.2.2 A shifting mind-set ....................................................................................................................... 61 6.2.3 Supporting infrastructure and network ......................................................................................... 62 6.2.4 Product visibility ........................................................................................................................... 63 6.3 Challenges and opportunities in relation to society ........................................................ 63 6.3.1 Stricter regulations on material choice and production ................................................................. 64 7 Analysis of initiatives and recommendations for future reverse logistics activities ..... 66 7.1 Reverse logistics activities for a buy-back and take-back service ................................. 66 7.1.1 Collection ...................................................................................................................................... 66 7.1.2 Inspection and separation .............................................................................................................. 69 7.1.3 Reprocessing ................................................................................................................................. 71 7.1.4 Redistribution ............................................................................................................................... 75 7.1.5 Future state recommendation ........................................................................................................ 77 7.2 Reverse logistics activities for offering after sales parts ................................................ 79 7.2.1 Collection ...................................................................................................................................... 80 7.2.2 Inspection and separation .............................................................................................................. 82 7.2.3 Reprocessing ................................................................................................................................. 83 7.2.4 Redistribution ............................................................................................................................... 85 7.2.5 Future state recommendation ........................................................................................................ 87 7.3 Reverse logistics activities for a usership model ............................................................. 89 7.3.1 Collection ...................................................................................................................................... 90 7.3.2 Inspection and separation .............................................................................................................. 91 7.3.3 Reprocessing ................................................................................................................................. 92 7.3.4 Redistribution ............................................................................................................................... 94 7.3.5 Future state recommendation ........................................................................................................ 95 8 Conclusion and future recommendations ...................................................................... 98 8.1 Answers to the Research Questions ................................................................................. 98 8.2 Future recommendations for IKEA ............................................................................... 101 8.3 Recommendations for further research......................................................................... 103 References ............................................................................................................................. 105 iv Appendix A – Template of interview questions with internal specialists at IKEA ................. I Appendix B - Template of interview questions with external actors .................................... III 1 1 Introduction This master thesis is written on behalf of and in collaboration with IKEA of Sweden. This section covers the background of the research area, as well as a description of the underlying problem that has initiated the thesis. The aim and research questions that the report addresses are then presented. 1.1 Background The linear ‘take-make-dispose’ model that dominates producer-consumer relationships is reaching its limits. It is a model according to which companies extract materials to manufacture products that are then sold to consumers. When the product no longer brings value to the customer it is discarded. This has led to unsustainable extraction of raw materials and extensive waste generation as products are disposed of after use (Ellen MacArthur Foundation, 2012). Negative climate impact can to a great extent be attributed to unsustainable consumption of resources and constitutes a problem ever more critical as population and consumption continue to increase (Hanumante, Shastri and Hoadley, 2019). Issues such as resource scarcity and climate externalities are worsened by industries that have embraced linear models (Ellen MacArthur Foundation, 2015). The application of a linear model leads to landfills and emissions that hurt our planet and people. New ways are therefore needed to meet customer needs and gain profits without compromising the life of future generations. Companies are also becoming aware of the financial risks of linear business models as the scarcity of raw material causes prices to rise (Ellen MacArthur Foundation, 2012). Material Economics (2019) finds that there is a gap between current climate policies and the goals of the Paris Agreement (United Nations, 2015) to create an economy with net zero supply side, including the development of industrial processes and increased use of non-fossil fuels. By instead turning to the demand side, actions can be taken to make better use of what is already produced, thus reducing the need for new production (Material Economics, 2019). The furniture cooperation IKEA Group, hereinafter referred to as IKEA, is addressing this issue by aiming to, by 2030, transform the currently used linear business model into a circular business model (Ingka Holding B.V., 2020c). The vision of IKEA ‘To create a better everyday life for the many people’ is challenged by growing threats to our planet but the vision also forces IKEA to take measures to transform into a sustainable business that increases the well- being of a growing number of people and the currently poorly treated planet. The transition towards a circular economy serves to eliminate waste and facilitate reuse of resources and entails changes throughout the business. The complete range of products needs to be designed using principles that enable circulation in different loops such as reuse, refurbishment, remanufacturing, and as a last resort, recycling (Inter IKEA systems B.V., 2019). In such a system, customers play an increasingly important role also after the point of purchase as the products need to go back into the system after use. In addition, the supply chain needs the capabilities and resources to handle the circular loops to prolong the lifecycle of products and materials. 2 1.2 Linear and circular economy The concept of a circular economy offers an opportunity to focus on demand side actions as it questions the linear model and hence the currently dominating way of producing and consuming goods. By facilitating circulation of products and materials in different loops, the product lifecycle can be extended, resulting in a reduced need for raw material and decreased waste generation (European Environment Agency, 2017). A transition to a circular economy is increasingly important for a sustainable future and includes changes in internal processes as well as in external behaviour (Hanumante et al., 2019). Kirchherr et al. (2017, p. 229) define the circular economy as “…an economic system that replaces the ‘end-of-life’ concept with reducing, alternatively reusing, recycling and recovering materials in production/distribution and consumption processes”. This system can be described by different loops, which in turn can be divided into inner and outer loops depending on the distance to the consumer and the value that is built into the products in the different stages (European Environment Agency, 2017). The outer loops focus on recycling and refurbishment/remanufacturing whereas the inner loops consist of maintenance/prolonging and reuse/distribution according to Figure 1 (Ellen MacArthur Foundation, 2015). Figure 1. Model adapted from Ellen MacArthur Foundation (2015) illustrating the flows generated by a circular economy The aim is to keep products circulating in the inner loops for as long as possible, thereby keeping the value of products high while minimising the need for new inputs. Product design determines products potential for circularity whereas the degree to which this potential is utilised is determined by activities taking place throughout the complete lifecycle (European Environment Agency, 2017). Capturing this potential requires a system that can coordinate the collection, refurbishment activities as well as redistribution, depending on the condition of products in the reverse flow (Goltsos et al., 2019). 3 1.2.1 Shifting to a circular business model The furniture industry is characterised by the linear business model with the take, make, and dispose perspective. The industry faces the challenge of meeting customers’ demands while remaining profitable without compromising the life of future generations (European Environmental Bureau, 2017). IKEA addresses this challenge by striving to enable the prolongation of product and material life through the four circular loops; reuse, refurbishment, remanufacturing, and recycling. These are described in the following paragraphs as defined by IKEA (IKEA of Sweden, 2019). The reuse loop consists of the customer use of a product and starts directly when a product is acquired. For IKEA the concept includes all phases of regular use and maintenance of a product, such as sustaining its condition and adapting it to changing needs and preferences. This definition means that customer use, second-hand markets, and other ways of passing on products form part of the reuse loop from IKEAs point of view. The refurbishment loop consists of products in need of processing and thereby include used, damaged, or non-compliant products that are to be refurbished and sold as new with only small improvements needed. The repairs or upgrades can be done either by customers, IKEA, or external after-market service providers. The process includes activities such as evaluation, cleaning, repair, upgrades and recertification to release the product back into the market. The outer loops, remanufacturing and recycling, focus on utilising parts and materials from products in the production of new products, hence these loops only indirectly contribute to product circulation. However, these loops create a potential for cost savings in the supply chain. A challenge is to keep the product value high for as long as possible by striving to keep products as close to the customer as possible and view recycling as the last resort and thus focus on what Ellen MacArthur Foundation (2015) refers to as the inner loops. For IKEA this translates into the reuse and refurbishment loops visualised in Figure 2. Figure 2. The four circular loops in a circular economy defined by IKEA, adapted to focus on the inner loops close to the customer (Inter IKEA systems B.V., 2019) A transition to a circular economy requires changes in how and where IKEA interacts with its customers and an ability to influence customers to embrace circular thinking in their behaviour. Customer behaviour is changing and the awareness of sustainable consumption increases (Ellen 4 MacArthur Foundation, 2015). Despite this, the financial and functional aspects are still the prioritised aspects when making a purchase (European Environmental Bureau, 2017). For IKEA to adapt circular business practices, new service concepts must be offered to customers to find incentives and convenient ways to pass on, repair, and adapt products to extend the product lifecycles (Inter IKEA systems B.V., 2019). Current trends are that people buy second hand to a greater extent, rent products and products are bought as a service or subscription (European Environmental Bureau, 2017). All these changes increase the value of a product since it can be used multiple times. However, it also puts pressure on the design, product flow channels, and after-sale services. A challenge with a more service-oriented offering is that work is often taxed higher than material. Higher taxes on work can result in linear consumption remaining more attractive for customers if buying new products are cheaper than repairing old ones. To drive change, it is important to make sustainable solutions more attractive than alternatives. Another critical part is that the products must be designed for the circular loops from the very start. IKEA tackles this challenge by incorporating circular design principles in the product design. The principles promote designing for standardisation, adaptability, renewable, or recycled materials, remanufacturing, care, repair, disassembly, reassembly, and recyclability (Inter IKEA systems B.V., 2019). To unleash the value of these efforts, supply chain development is needed to fit into a circular business model. The current development means that new channels and actors are entering the system and with them new challenges and opportunities arise. 1.3 Problem description Rising concern over the environmental impact of supply chain systems along with increased regulations has given rise to an increased interest in reverse logistics (Wang and Disney, 2016). The transition towards a circular economy impacts business in all aspects and development of the IKEA supply chain is necessary. To facilitate this development there is a need to investigate how IKEA can enable customers to return products to ensure they re-enter the system. The collection, inspection, reprocessing, and redistribution activities pose challenges for a circular economy (Fleischmann, Krikke, Dekker and Flapper, 2000). These additional activities in the reverse flow create new uncertainties compared to traditional forward flows. Products enter reverse loops for various reasons and in different conditions and it is important to understand the character of these reverse flows and what resources are required to enable circular supply chain development and adequate planning (Goltsos et al., 2019). In a traditional reverse flow, it is mainly unsatisfied customers returning products, but in a circular economy, products are also returned to extend their lifecycle. The changes a circular economy brings to the reverse supply chain in turn create a need for changes in the design of the involved activities. The transitioning into a circular business means that volumes in the reverse flow will increase as products are collected to enable second use. This requires new resources as well as extended capacity in the reverse flow activities. Today, the possibility to handle returns in the IKEA stores is limited which according to customer care specialist (personal communication, February 18, 2020), restricts the recovery processes and thus forces returned products with potential for recovery to be disposed of. 5 To plan for the customer return flow for previously used products, knowledge on when and if products will be returned is required, as well as information on quantities and conditions (Santibanez Gonzalez, Koh and Leung, 2019). These variables can be described by timing, quantity, and quality (Goltsos et al., 2019) and the uncertainties that they create must be managed to take care of products after use and improve reverse logistics performance. Hence, IKEA has seen a need to investigate how customer returns can be managed in the reverse flow to facilitate a circular economy and identify challenges and opportunities in the involved activities. IKEA is driving many initiatives to facilitate a transition to a circular economy, for instance buy-back and take-back services, offering after sales parts and usership models. These novel ways to collect and handle previously used products from customers results in the design of new reverse flows and changes in the existing return flow activities to allow products to re- enter the supply chain and facilitate a circular economy where customers and IKEA extend products lifecycles. 1.4 Aim The thesis aims to analyse how IKEA’s transition from a linear to a circular economy affects customer returns and reverse logistics. The thesis explores initiatives taken within IKEA that serve to facilitate a circular economy. The initiatives are analysed with identified challenges and opportunities in the current reverse flow to serve as inspiration for the future design of reverse flows. 6 2 Empirical background In the following chapter, the empirical background for the thesis is presented. Firstly, IKEA’s organisation is explained. The information provided is based on IKEA’s official communication, internal documents as well as interviews with employees at IKEA. An understanding of the complex IKEA organisation is needed as a transition to a circular economy affects all aspects of IKEA businesses. The following chapter gives an understanding of the context for this master thesis. Secondly, the chapter includes background information regarding challenges and opportunities in a transition towards a circular business model, provided by two external researchers within the circular economy. This can be seen as a complement to theory by providing an understanding of challenges facing customers, companies, supply chains, and the environment. 2.1 IKEA Group In 1943, Ingvar Kamprad founded IKEA and started selling general products to meet customer needs at a low cost. Since then IKEA has expanded into a global furnishing business with a presence in over 50 markets (Inter IKEA Systems B.V., 2018). The success of IKEA is largely dependent on the development of an efficient distribution network and supply chain optimisation. Products are produced in large quantities to allow for lower costs and to meet the vision of IKEA “To create a better everyday life for the many people” (Inter IKEA Systems B.V., 2020a). The company started by mainly selling products through mail orders but since then the sales channel has switched to focus on in-store purchases and in later years a growing portion of online sales (Inter IKEA Systems B.V., 2020b). IKEA is operated by a large number of companies that all run under the same IKEA brand in a franchise structure shown in Figure 3 (Inter IKEA Group, 2019). Inter IKEA Systems B.V., IKEA of Sweden AB, IKEA Supply AG, and IKEA Communications AB form the Inter IKEA Group. IKEA Industry also belongs to the group but is not shown in the figure as it is a supplier to IKEA, working close to IKEA Supply AG and other suppliers. The Inter IKEA Group is ultimately owned by the holding company Inter IKEA Holding B.V. Figure 3. Organisational structure of the IKEA franchise system, adapted from Inter IKEA Group (Inter IKEA Group, 2019) To the right in Figure 3, the abbreviated names of the franchisees that operate IKEA retail businesses are presented. Ingka is by far the largest franchisee with 374 stores (Ingka Holding 7 B.V., 2020c), compared to less or equal to ten stores operated by the other franchisees (Inter IKEA Group, 2019). Inter IKEA group and Ingka Group have the same founder but different management and owners. Ingka Group is owned by the Dutch foundation Stichting Ingka Foundation (Ingka Holding B.V, 2020d). When referring to Ingka, the parent holding company Ingka Holding B.V and Ingka Group are considered. The franchising system was set in place to expand and form a basis for mutual collaboration. While the franchisor, Inter IKEA Systems B.V., takes responsibility for the development and implementation of the IKEA Concept, the franchisee contributes with consumer and market understanding (Inter IKEA Group, 2019). 2.1.1 Inter IKEA Group The information in the following chapter is based on Inter IKEA Group Financial Summary 2019 (Inter IKEA Group, 2019). The strategic direction of IKEA is carried out by Inter IKEA Group, part of Inter IKEA Holding B.V., by connecting IKEA franchisees with product development and suppliers. Based on annual retail sales, the franchisees pay a franchise fee to Inter IKEA Group and it is from them their products are bought. In Figure 4, the organisational structure of Inter IKEA group is shown, consisting of the businesses: Franchise, Range & Supply and Industry. These core businesses aim to provide franchisees with the best conditions for implementing and operating the IKEA concept (Inter IKEA group, n.d.). They work close to franchisees and suppliers and strive for continuous improvements and growth. Figure 4. Organisational structure of Inter IKEA Holding B.V., adapted from Inter IKEA Group (Inter IKEA Group, 2019) The franchise business includes Inter IKEA Systems B.V. and its branches. They license the IKEA system and brands worldwide and work with the IKEA Concept. The franchise system creates flexibility and enables market expansion. The range and supply businesses have the task to develop and supply IKEA products. The business, therefore, spans across the total value chain and includes businesses such as IKEA of Sweden AB and IKEA Supply AG. The industry business is responsible for manufacturing products and focuses on parts in the value chain such as materials, manufacturing, and distribution. The business produces roughly 12% of the total IKEA product range. Product design takes place at IKEA of Sweden AB and to reach the goal of a circular business by 2030, IKEA has committed to having 100% of circular products and source only renewable or recycled materials by the same year. 8 2.1.2 Ingka Group A dominant share of the stores is run by the franchisee Ingka Group. The franchisee interacts directly with the customers. They buy products from Inter IKEA and are then responsible for the distribution to the end customers and the return flows. The Ingka Group is made up of three main business areas: IKEA Retail, Ingka Centres, and Ingka Investments. IKEA Retail is the part most people come in contact with, as it comprises 374 IKEA stores operating in 30 markets. The IKEA Retail business represents around 90% of the total IKEA sales (Ingka Holding B.V., 2020a). Ingka investments ‘…make responsible investments in people and businesses that make a positive difference to people and planet.’ (Ingka Holding B.V., 2020b). The result of investment collaborations is transferred to IKEA Retail to facilitate business development. The investment portfolio includes different themes, one of them being investments into the Circular Economy. Ingka is part of the transition towards a circular economy and aims to create a business that fulfils customer needs while operating within the 2030s of the planet (Ingka Holding B.V., 2020b). Ingka develops circular services to enable customers to acquire, care for, and pass on products. Pilots have been done to explore usership models, take-back and buy-back services, second-hand platforms, and recovery of faulty products. Ingka also gives increased attention to spare parts and works to make it easier to repair and complement products with the necessary parts (Ingka Holding B.V., 2020c). According to the Ingka Group Annual Summary and Sustainability Report FY19, 65 million products were returned or damaged during 2019 and 47 million were diverted from going to waste. Over 38 million of these products were sold in IKEA’s bargain corners, referred to as As-Is areas, selling mainly unused returned products. The other products could be repaired or repacked and placed back on the shelves. All these figures have increased compared to the previous year. 2.2 The logistic supply chain of IKEA from a flow perspective The following section is based on a presentation of the IKEA supply chain from a flow perspective given by a process developer at IKEA of Sweden. IKEA’s distribution network has been successful in lowering total logistics costs while keeping availability high. Goods have been distributed from suppliers to distribution centres (DC) for replenishment but also through direct transport to stores. In addition, customer distribution centres (CDC), located closer to the customers, have been supplied from larger DCs and directly from the production facilities. The stores have traditionally been the meeting place for IKEA and their customers but through more extensive online shopping the use of CDCs and shipping of products have increased. Figure 5 below gives a schematic picture of the IKEA supply chain. 9 Figure 5. Simplified overview of the IKEA supply chain. The black arrows indicate a forward flow and the red arrow a reverse flow. The distribution network of IKEA is developing, and a larger focus is given to where and how IKEA meets its customers. IKEA plan to introduce central parcel units (CPUs) to enable smoother shipping of orders, external and internal pick-up points to make it easier for customers to retrieve their goods and, in addition to the high flow DCs, implement low flow DCs closer to the markets. IKEA, therefore, sees the need to define processes and enable planning for resources on the total market and multiple customer meeting points and not only for the traditional fulfilment units. This requires more flows to be taken into consideration and thus makes the planning process increasingly complex. The customer should be able to choose what, where, and when to buy and pick up their products as well as what services they require. On the other hand, IKEA should be able to choose what, where, and when to produce, store, replenish, pick, and receive returns. Throughout the supply chain there is a need for processes and planning. The ownership of resources is divided between Inter IKEA and the franchisees. The resources belong to Inter IKEA until they reach stores, CPUs, or CDCs where the ownership of the resources is passed on to the retailer. However, the planning process is owned by Inter IKEA and extends from production out to the end customer and further into a return flow. 2.3 Challenges and opportunities in a transition towards a circular business model This section aims to give the reader a background of challenges and opportunities in a transition towards a circular business model. The transition involves multiple actors that must be considered. Important aspects brought up by external researchers regarding customers and companies, together with challenges for the supply chain and the environment when transitioning towards a circular business model are presented based on conducted interviews. Customer challenges The researcher within Design and Human Factors highlights the importance of making it convenient for customers to contribute to the circulation of products. Customers must find greater value in returning end-of-use and end-of-life products, in comparison to disposal. Additional actions, such as cleaning and re-installation, are often necessary when customers want to pass on or acquire previously used products. This may lead customers to dispose of products or decide to buy new ones. By offering services while keeping the ownership of the product during customer use, companies can take responsibility for the additional steps, 10 referred to as offering products as a service. Offering products as a service could make it more convenient for customers to act sustainably given that companies help them to return products after use. Customers can be more or less positive toward leasing particular types of products, depending on how they are used. For products that are used temporarily, leasing is more attractive while it is preferred to own products that are used daily. It is therefore crucial to understand which products customers are willing to rent and how customers prefer to gain access to them to develop attractive usership models that hold advantages compared to ownership. Besides products as a service, communication is key to facilitate the circulation of products. Customers must be aware of the possibility and benefit of recovering used products. By raising awareness, customers can become more willing to repair products instead of throwing them away and buying new ones. It is today often a question of cost, but the environmental benefit is becoming increasingly important for many customers in their choices. The segment of customers that have a positive attitude towards second-hand products is growing and reuse of products has gained status. Company challenges If linear consumption and production remain more attractive for customers and firms, circular business models will not gain ground. A transition towards a circular business model requires large investments and changes throughout organisations. Moreover, the value of changing to such a business model can be hard to predict and measure. Yet, a trend can be seen where circular business models are becoming increasingly common among industries. This requires companies to change their mind-set regarding how they produce and sell products. The aftermarket becomes more important for companies when seeking to achieve prolongation and circulation of products. In a circular economy, the buying and selling of products is part of larger cycles that also include use and reuse. Hence, each purchase creates new business potential on the aftermarket where companies can create value by offering additional services and spare parts. On the aftermarket an increased demand for customised product offerings can be seen. An example brought up by the researcher within Design and Human Factors, is the company Superfront who offers customised fronts to IKEA’s kitchen cabinets. Different design strategies can be used to support companies in their transition toward a circular business model. A strategy brought forward by the researcher within Design and Human Factors, is designing for extended use. This strategy includes long-term utility and performance by making maintenance and part replacement easy and convenient and aims to ensure long- term attractiveness among customers. This strategy is gaining popularity among companies since it can often be aligned with the rest of a company’s strategies regarding decisions on recycling and product material. Designing products for extended use is a good start, but pressure from society, with harder regulations and policies, is likely to make this strategy a must have in the near future. Companies looking to differentiate themselves from their competitors must thus find other ways. Design for multiple use-cycles is another design strategy that can be adapted to facilitate products to be used by different users over time. It focuses on providing clear instructions for how to use products as well as on enabling upgrades, and modification of products through modules. 11 Being able to successfully convert linear businesses to circular businesses, customers must demand such offerings, and companies must be able to deliver them. Policies and regulations can be introduced to push customers and companies towards sustainable consumption and production. EU directives, such as the Ecodesign Directive 2009/125/EC on Ecodesign requirements for energy-related products [2009] OJL285/10, sets rules to improve the environmental performance of certain products. This directive forces companies to rethink the way they design products and increase the requirements for energy labelling. The researchers describe that stricter requirements, which include a broader range of products and materials, are likely to follow for product design within the near future. Challenges in the supply chain When implementing a circular business model, new uncertainties arise in the supply chain, such as the assessment of product lifecycles. The concept of modified product lifecycles can be used to minimise such uncertainties. If companies can modify the lifecycles of products, they can reduce the uncertainty of when products return, and plan for the reverse flow. Many companies already have the technology and data to estimate product lifecycles since they are conducting testing to make sure their warranty times are applicable. There is a need for increased visibility of products in the supply chain. Many companies would find value in tracking products along the supply chain and at end-user. The used tracking technology should vary depending on product value and characteristics. Digital products such as computers and smartphones can easily adapt technologies such as RFID, whilst products such as furniture are more suited to adapt for example barcodes. It was explained during the interviews that barcodes can be used to access stored data about products in a product passport. Each furniture would for instance have documented information regarding the manufacturing process, materials, and returning/recycling standards. Such a product passport could also increase the value of a product by, for example, allowing the customer to know how many times the product has been reused or what materials the product consists of. There is large uncertainty in when and where products return, and the return flow varies over time. Product generations run alternately with various lifecycles. This requires a large amount of flexibility which is costly. In many recycling processes this uncertainty has been reduced by not focusing on recycling on a product level, but rather to look at a higher material level. This way it is easier to anticipate volumes and allocate capacity. This, however, requires a quite uniform flow with known materials like recycling of plastic bottles. When recovery processes are more product specific it is harder to plan on such a high level. However, standardisation from a logistical perspective by reducing part variety can make it easier to standardise these activities. Environmental challenges Product characteristics play a major role in the environmental benefits that are created. The benefits differ a lot between consumable and durable goods since it is hard to retain value in the consumable and often low value goods. Focusing on durable goods, it is important that they can be transported without being damaged. Further, environmental benefits can be created if bulky goods can be disassembled so that the fill rate increase and more goods can fit into a fewer number of vehicles. This is especially important for commercial transport and less so for private customers that transport low volumes. The goal should be to reduce the number of total 12 transportations. No additional transport occurs if a customer is driving to a store to purchase new products and at the same time return old products. The problem arises when customers need to do additional transporting to return products. When evaluating the environmental benefits of circulating products, the efforts and resources needed in all the additional activities must be considered. For example, the transportation to customers, the return as well as necessary recovery processes can be less sustainable than a pure product offering. Every change of user will result in losses in product value. Being able to subscribe to products for short periods can promote short-cycled consumption and thus negatively impact the environment, despite the circulation of products. Considering, different set-ups might be needed depending on whether it is a fashion seasonal product or a long-lived product. Designing products so that recovery is facilitated often requires more resources and material, which may initially result in increased environmental impact. To make these efforts sustainable the product must be used and recirculated as many times as designed for. It is important to measure the relative impact and effort to make sure that the intended value of product design can be captured. 13 3 Theoretical Framework This chapter presents the theoretical framework for this thesis, based on previous research within the areas of reverse logistics, circular economy, and product- and use-oriented business models. The chapter starts with an overview of reverse logistics related to customer returns and circular supply chains and is followed by the main factors influencing reverse logistics activities. Thereafter, product-service systems are presented to gain an understanding of how product and service offerings can be used in a circular economy and how they affect reverse logistics. The theoretical framework ends with the research model for the thesis and formulation of research questions. 3.1 Reverse Logistics Reverse logistics has been defined by Rogers and Tibben-Lembke (1998; 2002) as the movement of products in the opposite direction of a forward flow to create or recapture the value of products when possible, or otherwise proper disposal. According to Fleischmann et al. (1997) a reverse flow can occur through an organisation’s traditional channels, through separate channels or in a combination of the forward and reverse channels, and is therefore not necessarily a mirror of the forward flow. When introducing reverse logistics to recapture the value of finished goods, the products enter a closed-loop network (Fleischmann et al., 2000). Closed-loop networks are more complex than traditional open-loop networks since it in addition to forward logistics need to handle reverse logistics (Tibben‐Lembke and Rogers, 2002). CE100 (2016) describes reverse logistics as one of the core enablers of the circular economy. 3.1.1 Driving forces behind Reverse Logistics Many companies introduce reverse logistics in their supply chains to increase profitability. Another reason is that organisations are to an increasing extent being held responsible for their actions throughout the supply chains (Akdoğan and Coşkun, 2012). This responsibility has its origin in legal and social applications and generates multiple driving forces for companies’ reverse logistics. De Brito and Dekker (2004) divide the driving forces into three categories; economic, legal, and social. More recent literature adds the environmental aspect as a driving force behind increased focus on reverse logistics and it is therefore brought up in the following sections where each of the forces is discussed separately. Economic From an economic perspective, returned products can offer significant advantages to a company. Recovery costs lower than expenses on raw material can reduce high production costs for new products (Akdoğan and Coşkun, 2012). De Brito and Dekker (2004) further explain that companies are getting involved with reverse logistics even with no profit directly projected, but rather as a strategic decision to reach competitiveness and preparing the organisation for future legislation. Fleischmann et al. (2000) describe that reverse logistics helps companies label their brand as sustainable to generate a positive green image. Such a brand image can increase sales for companies since environmental issues are increasingly gaining attention. 14 Economic incentives to support a circular economy through reverse logistics are also given through legislation. For instance, in Sweden, a lower tax rate on repairs of certain products was introduced in 2017 to increase the economic incentives for customers to choose repair over new products. The tax rate was reduced from 25 percent to 12 percent for repairing products such as bicycles, shoes, and textiles (Skatteverket, 2020). This is meant to create a higher demand for repair services and make it more attractive for companies to offer such services. Another example is the Circular Economy Action Plan brought forward by the European Commission as a part of the European Green Deal. The plan is formed to promote sustainable growth (European Commission, 2020). The action plan, among other things, requires EU countries to lower or deduct taxes on repair services and to make sure services are made easily accessible for customers. Legal Legislation in this regard refers to legal provisions stating companies’ obligations to recover their products and accept them back (De Brito and Dekker, 2004). For instance, certain industries in the European Union have been forced to increase their responsibility in product recovery and are held accountable for a product’s whole lifecycle (Akdoğan and Coşkun, 2012; Guide, Harrison and Van Wassenhove, 2003). The Extended Producer responsibility, EPR, aims to improve waste management and collection by shifting the cost and collection from municipalities to producers. EPR is applicable to certain products, such as batteries, in the entire European Union but extended to include a wider product range in some member states. Ongoing projects are looking at the possibility of extending the EPR concept to ensure a more resource efficient Europe (European Commission – DG Environment, 2014). Moreover, the European Green Deal, a set of policies, was set in place to reach the goal of a climate neutral Europe by 2050 and achieving greenhouse gas emission reductions of at least 50 percent compared to the levels of 1990 by 2030. The Green Deal advocates new business models that steer consumption away from disposables and focuses on leasing of products and services (European Commission, 2019). The European Commission also explores return systems and how these can benefit consumers. Included in their action plan is the proposal of a legislative waste reform and initiatives to stimulate a circular economy. The aforementioned European legislations and policies have a great impact even globally since companies operating internationally need to assess the legislation stated in each country of operation (Akdoğan and Coşkun, 2012). Legislation and policies also determine what responsibility companies have regarding handling defects and warranties, hence, strongly influences return policies and customer rights (Chan, Chan and Jain, 2012). Social Corporate social responsibility, CSR, concerns how to incorporate social responsibility into companies’ values and therefore pushes them to be increasingly involved in reverse logistics (De Brito and Dekker, 2004). CSR is increasingly important among customers (Chan et al., 2012) and therefore motivates companies to establish an image as socially responsible (Akdoğan and Coşkun, 2012). CSR addresses ethical values, economic well-being, and legal compliance and shapes the attitude, strategy, and relationships for a company (Sarkis, Helms and Hervani, 2010). Environmental 15 The negative climate externalities caused by production and consumption are becoming increasingly alarming issues. The extraction and processing of resources are significantly contributing to global climate change (WWF, 2016). There is a need to make better use of what we already have, and scarcity of raw material is a rapidly growing issue along with the worsening climate externalities. World Economic Forum (2019) states that the annual global extraction of materials has grown from 27 billion tonnes to 92 billion tonnes during the years 1970-2017. Present production systems and a population of about 10 billion people in 2060 are estimated to require around 190 billion tonnes of materials every year. However, the main driver is not the growing population but rather our consumption behaviour where we use more resources per capita (World Economic Forum, 2019). Reverse logistics is a key part of improving our resource utilisation since it allows products and material to circulate and be reused, repaired, remanufactured or recycled instead of generating waste and landfill. Adding reverse logistics to forward logistics allows closing the loop of production and consumption (Ellen MacArthur Foundation and Material Economics, 2019). Bernon et al. (2018) discuss the importance of tone from the top, meaning that the attitude of companies toward a circular economy must come from top management by aligning circular economy values with the strategic directives. These values argue for a higher focus on second- hand products and reduced sales of new products. To achieve this, the values should permeate the entire organisation and be reflected in performance measures (ibid). 3.1.2 Reasons for customer returns De Brito and Dekker (2004) broadly describe the reason for product returns as no longer functional or functions no longer needed. The reasons for returns vary once the products have reached the customers and can be divided according to the product’s lifecycle, shown in Table 1. Firstly, in a business to customer (B2C) context, customers have reimbursement guarantees which allow them to return the product if expectations are not met, regardless of underlying reasons (ibid). Secondly, warranty and service returns allow customers to return products with functional or quality errors even after the reimbursement guarantee. Returned products are either repaired, replaced with a product promised to meet the standard or the customer receives the money back (ibid). Warranty is often limited in time, but customers can still utilise suppliers’ repair services in exchange for a fee after expired warranty. Finally, de Brito and Dekker (2004) explain end-of-use (EOU) and end-of-life (EOL) returns. EOU returns often refers to leasing cases where the customer can return the product in a specific stage of the product lifecycle. EOU can also refer to returns ending up on the second-hand market (ibid). EOL returns are instead the products that have reached the end of the lifecycle. Krikke et al. (2004) describe how legislation can increase the return rate and reduce negative externalities such as environmental contamination. 16 Table 1. The customer return reasons related to the product’s lifecycle (De Brito and Dekker, 2004; Krikke et al., 2004) 3.1.3 Reverse Logistics Activities This section aims to show how value can be recovered from products returned by customers through different activities. As previously discussed, a closed-loop network is more complex than an open-loop network, and the recovery is only one of the additional activities involved in reverse logistics. Fleischmann et al. (2000) define the activities in a reverse logistic process as collection, inspection, separation, reprocessing, disposal, and redistribution. Since this thesis focuses on prolonging the life of products and circulation, the disposal activity will not be further discussed. Collection Covers all activities involving collecting and physically moving the products to a point where further handling is performed. The collection often involves purchasing, transportation, and storing. This activity could be imposed by legislation, such as take-back obligations and responsibility for packaging materials. Inspection In this activity, products are inspected and the quality of returned product measured. Inspection can include disassembly, shredding, and testing of products (Fleischmann et al., 2000). Inspection can be done at different points in the reverse flow, in centralised models the evaluation is done later than in decentralised models. Separation The separation activity refers to how products are sorted depending on different characteristics determined by the former inspection activity. On a high level the separation is done as re-usable products or disposal. Separation serves to make the most profitable and suitable decision for disposition (Blackburn, Guide Jr, Souza and Van Wassenhove, 2004). The separation process results in splitting flows and includes sorting and storage (Fleischmann et al., 2000). Reprocessing Refers to the actual recovery of the product and can take different structure depending on the inspection and separation. The recovery process can be divided according to the processes: reuse, repackaging, repair, refurbishing, remanufacturing, and recycling (Sahyouni, Savaskan and Daskin, 2007; Thierry, Salomon, Van Nunen and Van Wassenhove, 1995). The recovery B2C commercial returns Reimbursement guarantees Warranty and service returns Functional and quality errors EOU returns Products reach a specific stage of lifecycle EOL returns Products reach end of lifecycle Reasons for Customer Returns 17 processes reuse, repackaging, repair, and refurbishing will be explained in more detail in section 3.1.4. Redistribution Includes the handling of re-usable products back to a potential market. This activity often contains sales, leasing, transportation, storing, and marketing (CE100, 2016). 3.1.4 Recovery processes This section describes the different recovery processes identified above; reuse, repackaging, repair, and refurbishing. Aligned with IKEA’s desire to keep product value high for as long as possible and do reprocessing as close to the customers as possible, remanufacturing and recycling are not considered in this section. Reuse The purpose of reuse is to pass on used products to second-hand markets with none or minor improvements (Sahyouni et al., 2007). A major challenge for the reuse activity is the process of collecting and passing on. Hopkinson, Zils, Hawkins and Roper (2018) identified large differences in customers’ willingness to return products across markets when studying a case of cartridges. This made it difficult to scale up and implement uniform reuse strategies in Europe. The authors highlight the importance of incentive structures for returns and an infrastructure that makes it easy for customers to pass on products rather than turning to the option of direct disposal. The customer perception of second-hand products is also a barrier to the market. Customers that favour previously used products over new products are still seen as a niche group and environmental considerations are often not highly prioritised when making a purchase (Hopkinson et al., 2018). Marketing has for a long time led customers to view new products as superior to used ones and their role can play an important part in a transition to a circular economy by re-educating customers to incorporate sustainability concerns in their choices (Hopkinson et al., 2018). Repackaging The repackaging process is done to return items to stock. Through evaluation, the items that can be restored by only exchanging the package are identified (Stock and Mulki, 2009). Repacking can take place immediately after product return if the product itself is in perfect condition, if packaging supplies are available at the processing facility. Due to legislation and other restrictions not all product returns can be sold as new after repackaging. These concerns products where quality and safety cannot be ensured (ibid). Repair Thierry et al. (1995) define repair as an activity involving fixing or replacing smaller parts to make a product functional. The ease of repair is to a large extent determined by product design since the product must be designed in such a way that components and worn out parts can be replaced. Ellen MacArthur Foundation (2016) highlights the barrier of getting customers to choose repair over disposal. This requires creating incentives that make it a favourable option. The service should be easily accessible, time efficient and offered at an attractive price. 18 Refurbishing Refurbishing aims to bring used products up to a pre-specified quality by disassembling specific parts into modules (Thierry et al., 1995). The modules are inspected and repaired or replaced and the refurbishing upgrade is, therefore, more extensive and resource intensive than reuse, repackaging, and repair processes. In Table 2 the main characteristics of the presented recovery operations are summarised. Table 2. Comparison between the recovery processes 3.1.5 Characteristics of a logistics system The characteristics of reverse logistics and forward logistics have different uncertainties that influence managerial, financial, and strategical decisions (Tibben‐Lembke and Rogers, 2002). These uncertainties are further affected when introducing circular economy values. Bernon et al. (2018) argue that there is an absence in understanding how the values of the circular economy should be operationalised into reverse logistics and aligned with strategic directives. This section takes the previously described activities and recovery processes as a starting point when discussing characteristics of a logistics system, identified by Tibben-Lembke and Rogers (2002). The aim is to identify uncertainties arising when managing reverse logistics in a circular economy. Forecast Planning for a reverse flow is more complex than for a forward flow because of the uncertainties involved in the process (Guide et al., 2003). In forward logistics a forecast is used to predict needed products, and is one of the main activities to plan for seasonal fluctuation and other changes in the market to provide visibility (Tibben‐Lembke and Rogers, 2002). In reverse logistic flow, the visibility is much lower which generates a reactive flow. Companies try to respond to customers’ actions rather than initiate reverse flow activities in planning and decision making (Tibben‐Lembke and Rogers, 2002). Forecasting a reverse flow is, therefore, more difficult, however, a large-scale reverse flow tends to follow the same trends as a forward flow but with some time lag. Tibben-Lembke and Rogers (2002) explain that a large forward flow of products for holiday sales is most certainly followed by a post-holiday return flow. The same trend is found when a sale promotion of 19 specific products is done to increase the sales, resulting in an increased return flow of the same product. Even if reverse flows can follow forward flows on a larger scale, the difficulty is to understand the different return rates for the different products. Customers’ decisions to return a product is based on multiple factors such as how user-friendly the product is to operate, how clear the instructions are, and how likely it is for the customer to experience buyer’s remorse (Tibben‐ Lembke and Rogers, 2002). When forecasting reverse logistics in a circular economy, additional attributes need to be considered. A circular economy has a greater focus on products at the end of their lifecycle, and due to a high variety the uncertainties in the timing of product returns increase (Matsumoto, Umeda, Tsuchiya and Tang, 2016). EOU and EOL returns depend on customer usage and wear, which increase the complexity of forecasting. Transportation The number of origins and final-destination points is one of the major differences between forward logistics and reverse logistics (Fleischmann et al., 1997). Forward transportation is characterised by few origins and many final destinations. Reverse transportation is characterised by many origins and few destinations during collection, while redistribution is characterised by few origins and many final destinations (Fleischmann et al., 2000). From a logistics perspective, Dekker et al. (2004) therefore argue for a many-to-many distribution network when integrating collection with the redistribution, as shown in Figure 6. Figure 6. Product recovery network, adapted from Fleischmann et al. (2000) Increased e-commerce within retail has led to a more decentralised distribution system that has the potential to extend the geographical acquisition area when collecting goods. For example, home delivery results in that customers interact with retailers in their homes to a greater extent (European Environment Agency, 2017). However, the difference between forward and reverse logistics makes it complex to combine the two distribution networks. Tibben-Lembke and Rogers (2002) describe the difficulty of combining the transportation since forward transportation is often set up as milk runs and any returned goods loaded on the truck during the milk run must often be unloaded at each subsequent stop to allow new goods to be unloaded. 20 Introducing a circular economy means that the transportation in return flows will be characterised by larger volumes and higher variety due to EOU and EOL products. The majority of traditional return flows happen shortly after the point of purchase whereas returns in a circular economy happen throughout the product lifecycle. The importance of reducing energy consumption per unit is further highlighted in a circular economy (Bernon et al., 2018), resulting in higher pressure regarding a shift towards renewable energy and higher filling ratios during transportation. Product quality The quality of returned products is important for how they should be managed in a reverse flow. Tibben-Lembke and Rogers (2002) point out that product quality can be considered rather uniform within forward logistics whereas the product quality in reverse logistics is often quite uncertain and inherit a high degree of variation. Determining the product quality at an early stage is important for efficient handling of returns, as products in different conditions require different actions in the reverse logistics activities. Returned products can either possess a functional or material value depending on the condition. This can be captured by going through recovery processes that support circularity (Das and Chowdhury, 2012). Consideration to reverse logistics and recovery processes must be taken already in the design phase to facilitate the recovery and circulation of products. If products are designed to be easily recovered it can save both time and money (Das and Chowdhury, 2012). By applying modular design principles, the recovery process can be made easier which in turn reduces cost as lead times decrease. Das and Chowdhury (2012) explain how products can be designed at different quality levels depending on the intended use and reuse. A product that is designed to be mounted and dismounted several times must hold a higher quality compared to products that are disposed of after a single use. The circular design makes restoration and regeneration possible at the end of product lifecycles (Ellen MacArthur Foundation, 2015). Also, high quality products are more durable and can stay with customers for a longer time which can slow down consumption and reduce waste. Packaging quality New products in a forward flow are delivered in packaging to protect the goods during transit and allows the products to be palletised neatly to reduce storage space and risk for damage (Tibben‐Lembke and Rogers, 2002). In comparison, most returned products do not have complete packaging, some products are not properly re-packaged, and some packages are damaged. When shipping returned products, goods cannot be properly palletised because of small volumes and a large variety in size. Many of the pallets are therefore unorganised with different sized packages and more susceptible to damage during transport (Tibben‐Lembke and Rogers, 2002). When returning a product and the end of its lifecycle, the product likely lacks packaging completely due to the time from the point of purchase. Shipping unpackaged goods increase the risk of damaging the products which are a major challenge when aiming for maximising the circulation of used material (Meherishi, Narayana and Ranjani, 2019). Using recyclable or reusable packaging is further important in a circular economy to reduce waste (Meherishi et al., 2019). 21 Destination, routes, and channels In a return flow, the channels are often exception driven and reactive rather than proactive due to the large uncertainties that lie in when and in what condition products will be returned (Fleischmann et al., 2000). Reverse logistics is generally not a product of precise planning but rather a response to customers’ actions and therefore involves a lot of uncertainty regarding routes and destinations (Rogers, Lambert, Croxton and Garcia-Dastugue, 2002). Inspection and separation activities are needed to determine routes and destinations and are important to reduce uncertainty and facilitate better planning of the flows through different channels (Tibben‐Lembke and Rogers, 2002). A return flow can be centralised to varying degrees. In a centralised return flow, the handling of returns is done in one or a few places, such as a distribution centre, which facilitates consolidation. If a retailer is supplying a large number of stores, efficiency has been shown when picking up returns with the same vehicles that distribute goods from the distribution centre. De Koster, De Brito and Van de Vendel (2002) argue that this saves both time and space since the same resources can be used for both the forward and reverse logistics. However, the authors conclude that a retailer who handles a large number of returns gain efficiency by handling returns in a separate area. The separation is also dependent on the market if new and returned products are sold on the same market, integration is preferred and vice versa (De Koster et al., 2002). Bernon, Cullen and Gorst (2016) and Nuss, Sahamie and Stindt (2015) instead advocate the importance of multiple return points, a decentralised approach, to reduce transport time and to enable smooth returns for customers. Nuss et al. (2015) further present the two types of collection models, bring-in, and pick-up systems. The bring-in system can include services such as drop-off sites, take-back in-store, and parcel returns. A pick-up system refers to when a retailer picks up goods at the customer, either by third-party transport providers or in its regime. Hübner, Holzapfel and Kuhn (2016) highlight the importance of letting customers return products independent of the ordering channel. Goods ordered online should be accepted by stores and vice versa. This means that return services should be offered on multiple channels. Offering return options across channels provide a better customer experience but it is also an opportunity to cross-sell and up-sell according to Zhang et al. (2010). Pricing The reason for a return is often reflected in the price. A product that is returned because it did not meet expectations can most often be repackaged and sold as new at the same price. In a circular economy, products are to a larger extent returned in EOU or EOL. The closer a product is the end of its lifecycle, the less attractive the product becomes. Greater variety in product conditions leads to a larger variety in the pricing of products. If products go through recovery processes before redistribution, these must also be reflected in the price (Ellen MacArthur Foundation, 2015). The above factors increase the uncertainty of matching the price with the willingness to pay among customers (Tibben‐Lembke and Rogers, 2002). Cost 22 The cost structure in reverse logistics differs compared to forward logistics. A cost structure in forward logistics is well defined with accounting systems to manage the products through the chain (Tibben‐Lembke and Rogers, 2002). Reverse logistics has less visibility since each product is often handled individually which generates a different nature of the cost structure. Tibben-Lembke and Rogers (2002) describe several activities where return logistics differ from forward logistics in relation to cost. When collecting returned products, the shipment size is generally smaller, meaning that the transportation cost per item tends to be higher. In addition, many products require redistribution to be sold (Fleischmann et al., 2000), and therefore transportation often is a major cost in reverse logistics. Small shipment volumes further generate more material handling which increases the handling cost per item, as returned products need extra labour for quality inspection and separation. Cost related to inspection and separation is often larger when circular economy values are embedded in reverse logistics due to higher uncertainty regarding product quality (Bernon et al., 2018). Regarding inventory, holding cost is generally seen as a percentage of a product’s value. Since returned products have a lower value, inventory holding cost can generally be considered lower. The holding cost is further dependent on the product’s obsolescence and shrinkage of theft which affect the value of the product (Tibben‐Lembke and Rogers, 2002). With EOU and EOL returns, the obsolescence tends to be higher because of the time difference between the point of purchase and point of return. Consequently, the time difference often reduces the product value and the risk of theft. Tibben-Lembke and Rogers (2002) argue that the cost for recovery processes can be lower than manufacturing new products, depending on the context. This said recovery processes for obsolete products tend to be more expensive due to outdated assortment, resulting in a huge number of products entering the waste stream (Guide Jr and Van Wassenhove, 2009). Inventory management In a forward flow context, the uncertainties for inventory management are mainly dependent on product demand, while the selling price is considered known (Silver, Pyke and Peterson, 1998). In a reverse flow context, product arrivals are characterised by more randomness, and selling price is determined at a later stage which results in difficulty when applying traditional inventory models (Tibben‐Lembke and Rogers, 2002). Considering that the volumes are generally low in reverse flows compared to forward flows, inventory management has not received a lot of attention in research and practise (ibid). In a fully circular economy, all products should be reintegrated in the supply chain after use, leading to a significant increase in volume. In general, inventory levels are highly dependent on the return process as an efficient return process enables products to faster become re-sellable (Hübner et al., 2016). Hübner et al. (2016) describe the different advantages and challenges that follow for inventory management depending on the chosen reprocessing location. Reprocessing in the store has the advantages of fast reintegration into store inventory and lower transportation costs. However, space is often scarce and reprocessing costs high. Having a separate recovery centre allows for specialised and often cheaper reprocessing but results in more time-consuming reintegration into inventory and additional transport costs. The trade-off between freight rates and inventory holding should be considered. Centralised inventory lowers the inventory costs but often results in increased 23 need for transport while decentralised inventories have higher holding costs but allow for shorter distance transports (Hübner et al., 2016). In a closed-loop supply chain, inventory management also includes the storage of spare parts to facilitate recovery processes. Storage of a large variety of parts during a long period incurs high inventory costs. Savolainen and Collan (2020) lift the opportunities of additive manufacturing, commonly referred to as 3d-printing, to reduce service lead-times and risk of inventory obsolescence. Additive manufacturing allows for spare parts to be printed on demand and a greater variety can, therefore, be offered. However, the use is unexplored in the retail business and the trade-off between stocking parts and printing on demand must carefully be considered (Savolainen and Collan, 2020). Product lifecycle The product lifecycle is different in reverse logistics compared to forward logistics. The main purpose of reverse logistics is to recapture the value of used products. The remaining value in a product depends on whether the product still has a demand on the market (Tibben‐Lembke and Rogers, 2002). If a product is phased out because that product class is replaced by an improved and superior product, a returned product will have low value on the second-hand market. On the other hand, if a product is replaced by a similar product, the value can remain high since the returned product might still be attractive as a substitute for the new product. In a circular economy, the prolongation of product lifecycles is central. Products can, for instance, be upgraded by replacing outdated components to improve the quality and extend the product lifecycle (Sahyouni et al., 2007). Marketing A major problem with marketing communication linked to returning products is that retailers cannot promote specific products outside the store because of the uncertainty of supply. This limits communication with potential buyers (Tibben‐Lembke and Rogers, 2002). A consistent supply of products generates reliability among customers that specific products are offered in- store (Goltsos et al., 2019). Irregular returns in a reverse flow further risk to damage a company’s reliability since the availability of products are uncertain (Consumer Reports, 1998; Gurnani and Shi, 2006). Retailers have therefore introduced outlets only selling overstocked and returned products to separate forward products in regular stores from returned products. The marketing of returned goods is further uncertain for retailers because of the risk of product cannibalisation. Tibben-Lembke and Rogers (2002) describe a belief among retailers that customers purchase a certain number of products and selling second-hand products would, therefore, be at the expense of selling new products and result in lower margins. Iannuzzi (2017) argues that green marketing is becoming imperative to attract customers in many markets. Customers are to a greater extent demanding sustainable products and companies can see competitive advantages and added value in offering these products. A successful marketing strategy is built on credibility, acknowledging customer demands, and appropriate communication of the green attributes of products according to Iannuzzi (2017). A non-transparent and faulty green marketing can however severely hurt brand image and reliability and lead to greenwashing. Greenwashing can be defined as misleading customers 24 about environmental practices or the environmental benefits of a company’s products or services (ibid). Track and trace visibility To enable companies to manage reverse logistical activities efficiently, information systems are needed. The selection of appropriate information systems can reduce cost and increase visibility and the possibility of capturing value in the return process (Mahindroo, Samalia and Verma, 2018). The quantity and speed of available data have increased during recent years due to internet technologies and has opened up for improved visibility in the supply chain (Kumar et al., 2016). Available technology makes it possible to track products using for example RFID tags. The cost of this technology has for a long time been a barrier for implementation on low value and mass-produced products, but during the last years the prices have dropped significantly making it a more viable alternative. For example, the fast fashion industry has started to adopt RFID technology and has proven its cost efficient in forward logistics as it can provide useful data and significantly reduce handling time for inventory (Cilloni, Leporati, Rizzi and Romagnoli, 2019). Kumar et al. (2016) discuss the opportunities that lie in the internet of things to increase visibility in reverse flows. Sensors embedded in products can provide companies with quality and usage data, information that facilitate better planning processes, and a greater understanding of customers’ behaviour. Improved visibility can reduce the uncertainty in the timing of product returns by increasing predictability (ibid). The need for track and trace capabilities increases in a circular economy since there is a need to keep track of products and materials to ensure circular processes. Werning and Spinler (2020) lift the lack of supply chain visibility as the major barrier for a circular economy and highlights the importance of clear metrics to achieve and sustain circular business models. Hopkinson et al. (2018) advocate investments in information management systems and technology to enable real-time visibility and predictive maintenance and argue that it is critical for circular business models. 3.2 Factors influencing the design of reverse logistics activities New and changed needs arise for the activities in reverse logistics in a transition towards a circular economy. This section aims to describe design alternatives for the activities; collection, inspection, separation, reprocessing and redistribution, and identify influencing factors. The inspection and separation activities often take place simultaneously and are therefore presented jointly. 3.2.1 Collection The collection activity is characterised by multiple origins and few destinations and occurs between the consumer market and recovery facilities, showed in Figure 7 (Fleischmann et al., 2000). 25 Figure 7. Product recovery network with a focus on the collection activity, adapted from Fleischmann et al. (2000) The process of collecting goods can be described in three steps: incentivising returns, designing the collection channel, and pre-sorting of goods (Goltsos et al., 2019). There is not much value in designing products for reuse or recovery if they never return to the supply chain (Ellen MacArthur Foundation, 2020). Incentivising the customers to return products as one of the main challenges for retrieving goods. According to Ellen MacArthur Foundation (2020), customers are more willing to return products if they perceive it to have value. To incentivise customers the key motivators; reward and convenience are commonly used. For reverse logistics this translates into a convenient product return process or a system where customers get rewarded for returning products. The uncertainty in when and if products will be returned combined with the uncertainty in how many that will return constitutes the main challenges for designing the collection activity (Goltsos et al., 2019). The timing and quantity of product returns must be estimated to design and operate efficient collection processes. The collection of products is highly dependent on product value according to Ellen MacArthur Foundation (2020). If a product is characterised by low value, it is increasingly important that it is easy for the customers to return the products. The recovery of these products must be supported by local infrastructure such as home collection recycling. If products inherit medium value, take-back schemes can be used. This can be exemplified using the beverage bottle recycling model used in many countries in Europe where customers return bottles to easily accessible collection points and receive a deposit in return. For high value products, customers are in general willing to sell or swap products and often use platforms or third party actors to do so (Ellen MacArthur Foundation, 2020). Depending on the business context, single or multiple channels can be used for collection. If the consumer market is characterised by multiple origins, it is important to expand the geographical acquisition area for the collection activity (Fleischmann et al., 2000). This can be facilitated by offering collection through multiple channels. Different actors, such as the manufacturer, retailer, or a third party can be responsible for the activity. According to Savaskan, Bhattacharya and Van Wassenhove (2004), a collection channel operated by retailers is preferred in most cases since the retailers are located closer to customers. Choi, Li and Xu (2013) supports this argument and highlight the environmental benefits of the collection done by retailers as distances become shorter. The collection channel can also be operated by a network of actors to increase customer reach and consolidate volumes (Choi et al., 2013). 26 Vlachos, Georgiadis and Iakovou (2007) bring up stricter legislation as a reason for increased attention on the collection activity. Obligations, such as take-back obligations, are to a greater extent introduced in markets to increase producer responsibility and environmental consciousness. The extended producer responsibility legislation, present in the European Union, cause a greater need for collection of the concerned products. For low value products covered by the legislation, CE100 (2016) suggests the implementation of centralised collection schemes to achieve cost-effective collection from large geographical areas. Reverse channels face challenges to adapt their capabilities and capacity to handle the take- back of products. The number of collected products is dependent on the rate of the collection which in turn is determined by the collection capacity and the willingness amongst customers to return products. To establish long term profitability in the reverse logistics, companies must ensure that the right volumes, in the right quality and at the right cost are collected (TU Delft, 2017). 3.2.2 Inspection and separation Traditionally supply chains have been designed to minimise processing costs of returns and not to recover value. Ellen MacArthur Foundation (2016) advocates the evaluation of products at an early stage to limit the reverse logistics flow to only include products and materials that can be recovered. With a thorough inspection early on, the products can be separated and handled more efficiently using operations tailored to flow characteristics. Blackburn et al. (2004) debate whether it is desirable to inspect products early or late in the return process based on the time sensitiveness of the value of products. Their findings are presented in the following paragraphs. The authors divide products into the two categories of functional and innovative. Functional products are less time sensitive and the marginal value of time is lower compared to innovative products. Innovative products are instead characterised by short lifecycles and high time sensitivity. The characteristics influence the supply chain design and for functional products an efficient supply chain can be favourable even though speed is sacrificed in favour of cost efficiencies. For innovative products, speed is valued higher than cost and a responsive chain can, therefore, be beneficial even if it is achieved at a higher cost. The key difference between efficient and responsive models lies in where the inspection activity occurs in the supply chain. To reach cost efficiency, the inspection activity can be centralised while the activity can be decentralised to gain responsiveness and quick processing of returns. In Figure 8 delayed and early product differentiation is visualised based on the findings of Blackburn et al. (2004). 27 Figure 8. Delayed and early product differentiation in the reverse flow, adapted from Blackburn, Guide and Souza (2004) The efficient model achieves economies of scale in both the reprocessing and transport of products. The lowered costs however come at the expense of delays. The model stems from the postponement strategy within forward logistics which delays the differentiation of products. In forward logistics the strategy has been successfully used to deal with the cost of variety and multiple inventories. The efficient model also carries benefits for third parties and retailers as all products can be sent to a central location without sorting. Applying postponement in reverse logistics is less advantageous as the product variety and condition is given already when the return is received. The condition might not be directly observable but can be determined through inspection and testing. In the responsive model, testing and inspection are decentralised to facilitate early process differentiation. The model seeks to achieve preponement by evaluating products at multiple locations. Directly reusable and disposable products can be diverted from the main return flow early on to increase speed in the handling. Directly reusable products have higher value and benefit the most from early differentiation. This approach serves to reduce congestion and queuing for products in need of recovery to keep product value as high as possible. One challenge to achieving this type of reverse supply chain is the needed capability to quickly and cheaply determine the quality of returned goods. Including technology in products can reduce the cost of inspection by generating data on the condition of products and the need for maintenance in a time efficient manner. Technology can offer the possibility of both responsive and efficient return supply chains as the quality inspection can be done remotely (Blackburn et al., 2004). Informational value is created when inspecting products (TU Delft, 2017). It gives valuable information about customer usage patterns, wear and tear, and customer complaints. This is information that can be used to improve both supply chain activities and product design. 28 3.2.3 Reprocessing In a circular economy it is increasingly important to recapture the value of returned products to avoid disposal. To be able to handle larger volumes, companies must have resources to recapture value efficiently (Fleischmann et al., 2000). Thorough inspection and separation are a pre-requisite for the reprocessing activity as the quality of products determines the feasibility of different recovery processes. Reprocessing can be done on material level through recycling, but a higher value can be generated if done on a component or product level (TU Delft, 2017). These are the levels considered in this section. The reprocessing activity includes decisions on production, handling equipment, and workforce size (Dekker et al., 2004). The processes face a high variety in timing, sequencing, and batching for resources due to a high uncertainty of volume (ibid). In closed-loop networks, multiple forward and reverse flows are crossing each other’s paths, and Dekker et al. (2004) describe the value in integrating several of these operations in the same facility to achieve economies of scale by sharing fixed assets and reduce overhead costs. To gain the most benefit of integrating flows, the flows should utilise similar operations. Fleischmann et al. (2000) discuss the width and depth of recovery networks. The number of locations with similar operations is referred to as the width of the network. The network depth is the number of facilities that returned products pass before they enter the second-hand market. These factors together determine the degree of centralisation (ibid). The possibility of integrating networks is very much dependent on the type of recovery processes involved in the reverse flow (De Koster et al., 2002). The network width is dependent on the geographical spread and is a trade-off regarding transportation distance and equipment setups. The network depth depends on recovery processes and product complexity. Therefore, the involved operations in the different recovery processes for this thesis are presented below to enable a discussion regarding the degree of centralisation and the potential of network integration. Reuse The reuse process focuses on passing on products to new customers and often require storing space as the passing on seldomly occurs instantly. The design of the reuse process is closely related to the decision of where to perform inspection and separation. The argument of having the retailer to be responsible for the collection is supported if many of the products are separated into the reuse process since the products stay close to the customer touchpoints and minimise the transportation and time between collection and re-selling point (Choi et al., 2013; Savaskan et al., 2004). Integrating the reuse process to a forward flow would however require space in the forward flows’ customer touchpoints. Repackaging Repackaging focuses only on package recovery and assume the product to otherwise be in new condition. Stock and Mulki (2009) state that repackaging can occur directly after inspection for products in new condition. The complexity of packaging quality in return flows results in high uncertainty regarding the demand for packing material (Tibben‐Lembke and Rogers, 2002). For instance, if most of the returned packages are damaged, the return flow might consider investing in equipment capable of effectively repackaging the products. If the packages on the 29 other hand are packaged incorrectly, the repackaging process instead need the capacity to repackage the existing packages. Repair With repair, Thierry et al. (1995) refer to fixing and replacing small parts to improve the product’s function. Ellen MacArthur Foundation (2016) lifts two barriers for product repairs; lack of repair information and lack of available spare parts. Firstly, there is a lack of available information on how to repair products. Repairs can be done directly by customers, manufacturers, or external service providers. Manufacturers are likely to have comprehensive information about the products while customers and external actors seldom do. The more complex a product is, the harder it becomes for these actors to successfully repair the product. Ellen MacArthur Foundation (2016) hence identify the availability of repair information as crucial to avoid disposal of products tha